
Mopar1973Man
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Viewing P1698 No Bus Message Received From PCM in category Dodge Cummins Articles: OBDII Error Codes
Everything posted by Mopar1973Man
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Pre lift pump fuel filter question
Nice part of the spin on filter you can rinse and reuse several times just check the bottom for rusting issues are you clean it out. Now as for the filter @IBMobile posted does work but like @LorenS mentions there is very little debris holding. No to mention if mounted sideways is will plug up quickly. Where the spin filter typically hang and the debris settles to the bottom when the truck shut down. In all my year with the AirDog now I've never had to replace the water separator till there was signs of rusting started then I would replace it. Ever one that I've cut open had very little debris.
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VP44 DAP
I notice @IBMobile posted... That right there is actually controlled by the battery temp sensor. As the battery temp rises it can be as low as 13.2V. Then as battery temperature cools then it can be as high as 14.8V. Charging voltage can and will change depending on how long the vehicle is driven and outside temperature as you drive. In all my time driving back and forth to Ontario, OR I can say it can be to that extremes I posted. Hot summer day idling in traffic it can seriously drop close to the 13.2V.
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ECM # 4
The early ECM's for the 98.5 and 99 was rather weak ECM's and had several issues with the EPROM. I remember a spell where Smarty tuners where causing issues because the Flash EPROM and would only hand like roughly 1,000 re-write cycles and then fail to boot.
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Drawstraw Users - How low can you go?
I've got one here but its not cold enough this year for it. I'm not seen any minus numbers and barely any snow at all here. I typically use the 190*F. @pepsi71ocean has been running year round... No issues around New Jersey... The only thing I can say is the thermal efficiency is much better running a 200*F thermostat being most of the expanding heat is converted into work and not absorbed by the cooler coolant jacket. Hence why a lot of gasoline engine started going up in temperature and so did the 6.7L Cummins. Not to mention the 6.7L thermostat does fit our 24V heads. This how you get the 200*F thermostat. I won't suggest this for anyone towing heavy here in the states but up north in Canada and Alaska it would be a good thing. I will say it will keep the cab MUCH MUCH hotter for sure. Fan on lo and temp control way down. Actually my gauge is dead on the money temp wise. As for cetane part of that is refined... ASTM testing scale. You can look up the fuel specification from the manufacture and plug in the values and see what the actual cetane is. This way my local Cennex Fuel station years ago when I did the study. They listed both the summer fuel and winterized fuel as well. Then I found the 55 barrels that they were adding to the fuel when gelling issues where a problem. Light green is winter fuel and dark green is summer fuel.
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Battery Temp Sensor question
My alternator shorted out on the blue wire side. This was enough circuit to burn a hole through my PCM and never blow the 20 Amp fuse that protects the PCM. All I can say that alternator had a short on the blue wire side. Last alternator I had rebuilt was good but the brushes was fried and had alternator shop replace them for $40 bucks. This last alternator I don't think had any problem but time was short I needed my truck and replace it to find the problem came back and was the PCM protection fuse fell out. So, technically I've not had a alternator failure really since the W-T ground wire mod.
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Mopar Winter front
All mine are are aluminum sign cut up so they fit inside the grill holes. Bow the metal slighjtly and then only need 1 bolt to hold them in place.
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Injector questions, which vendors?
Your old than myself... I would of been 8 year old then.
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Drawstraw Users - How low can you go?
Correct. It basically I get too much tension on the slide rail fork that I manage to slip between the rail. Just gotta be mellow when shifting. I had to fix a 1992 Dodge Getrag 360 for the same this a couple weeks ago. Old Aluminum road sign. The bowed the piece slightly so the bow up in the middle the using a single bolt in each one I can pull the bow down filling the void. Used nyloc nuts.
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Drawstraw Users - How low can you go?
Not true. When diesel fuel cetane is 45 to 50 cetane it will ignite easy with compression. Now take summer fuel attempt that and you might find a different story. Back when I done my last research of fuel blends they were upping the xylene mixture to increase cetane value. https://en.wikipedia.org/wiki/Xylene Xylene reduces the flash point of the fuel so compression pressure with cold air can still reach ignition point. Hence why most every fuel station up here in the north is all running Winterized #2. More you raise the cetane the lower the BTU's are going to get. Another part why I suggest to never remove the stock filter you gain warm from the manifold for the fuel, then the fuel heater run at any temp below +70*F. Then if you step up to 200*F thermostat you give more warmth (better thermal efficiency) to the cylinder promoting ignition and since the coolant is hotter by 10*F now the manifold will be warmer helping to heat both the fuel and the air. Again way I'm set up my IAT and Fuel Temp are always with +/- 5*F of each other. I use my grill insert to block out the cold wind over the intercooler. Side story I was coming back from Lewiston there was a truck travelling the grade super slow like 45 MPH in a 65MPH waited for my time to pass and when I did I down shifted to 4th too much zeal and would you believe it I stuff the stick in between the shift rails and stuck in 4th gear. So, I ran the tach up to 2,500 RPM holding barely 55 MPH in 4th gear and climb the grade ot the top. By the time I got to the top the coolant was up to 201*F and fan was locking up and I watch both the coolant, IAT and a small fuel temp drop. This example shows that covering the grill allows for unusual issues to be handled. If I was covering the radiator face I would of overheated and been stuck in the middle of the road attempting to repair. Thank Gawd for my set up... I got up top and fix the stick by pulling it up resetting the rails to neutral and drove home.
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Injector questions, which vendors?
Hmmm... I remember a punk kid riding in my Dad's 1973 Dodge Charger to the corner store to get fuel on the weekends and remember seeing $0.589 for a gallon of leaded gasoline, yup I was born before the unleaded fuel change came about.
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Block heater usage question
I haven't plugged in the block heater in over 7 years now. This winter I only paused a few times for the first cold start up waiting for the light. Like right now its 32*F outside I would just fire up and leave. Not to hijack... We got some wood but soaking wet and started splitting yesterday while we could with good weather. All of out working to move rounds for @Jthor then @Wet Vette and myself were picking up and loading a truck to move to the covered wood shed. We got a small pile start but more to come today. Between the death of @MoparMom (Feb. 22, 2020) then the start of the COVID-19 lock down. Closure of most forest and access to wood. Then later in the summer release the forest but I got boom with more work than I could handle. I managed to get 1 trailer load of red fir but that is already fully burned up and gone. Takes roughly about 9 to 12 cords every winter. So I've been running the heat pump set for 65*F and letting @Jthoruse the majority of the wood being the other house has no secondary heat like electric or anything. Wood only heat. Back to normal threads...
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Battery Temp Sensor question
A short on the green wire of the field to grounds will do exactly that. A grid heater(s) commanded for excessive long time or contacts arced and held excessive. Like with my landlord truck (Russ) his blew the alternator and the charging fuse by using his winch with weak batteries placing nearly 100% of the load on the alternator. Alternator is never suppose to hold the entire load of the vehicle it suppose to hold the loads on the batteries and alternator fills in a balance charge to maintain 13.5 to 14.5 this rule will not change. Now if the batteries do not have the capacity for said electrical load it will force the alternator to make up what the batteries will not hold. Again this comes back to weak batteries and excessive loads. Starting out with my old school halogen lights (45w /65w) and 4 flood lights (100w a bulb) This is one reason why I ditch the four 100w flood light I had below my bumper (400 watts / 14.5 volts = 27.5 Amps DC) then the old stock headlights are 45w lo and 65w hi beam (90w / 14.5 volts = 6.2 Amp DC) this is a total that is a total of front lights excluding markers and tails is already 39.9 Amps DC for my old setup. Upgraded to HID's and LED driving light. Now I've got Morimoto HID's which are 35w a side so that is 70w total. (70 watts / 14.5 volts = 4.8 Amps DC) then changed out the four 100w halogen bulbs for 2 PIAA 530 LED Driving lights which is 18 watts each which is 36 watts for the pair. (36 watts / 14.5 volts = 2.4 Amps DC). Before - Total watts and Amps - 578.5 watts at 14.5 volts DC, drawing 39.9 Amps DC After - Total watts and Amps - 104.4 watts at 14.5 volts DC, drawing 7.2 Amps DC - Extra gain with huge bonus of better light over any halogen bulb. (rated for 4,000 lumens). This is a total of 554% saving compare to the old school system I had. Total savings or power which is 474 watts and 32.7 Amps not used by the alternator in just lighting upgrades. Remember we have a stock alternator rated for 136 Amps. I'm not looking for bigger alternator just better efficient lighting and other electrical items. Just looking at my tail lights most of them are 250mA a bulb again a big saving of power vs. old incandescent bulbs the truck was made with. Just now looking at all my changes I've free up a bunch of the alternator and much less to power. I've even though about pulling the tail light fuse and replacing the 15A with a 2.5 amp which is still over kill. Again seeing the electric saving in being able to swap out a fuse to such a small size. LED and HID light is a best option for reducing electrical load.
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Battery Temp Sensor question
Yes. One example using your set up and failure points. So if you voltage drop test both cables (NEG) and there is 0.003 to 0.005 volt drop this means that the voltage to BOTH BATTERIES is with the alternator charging 14.5 volt will net you roughly 14.497 to 14.495 volts to both batteries not even going to notice. Battery temp sensor is only going to change the voltage between 13.2 volts to 14.8 volts period. It is not going to fix a bad battery or cable. The balance of the batteries is based directly on the condition of the cables if there is excessive voltage drop then you will be imbalance between batteries. Like I'm showing if the voltage drop in mere 0.003 to 0.005 volts you not going make zero difference moving the battery temp sensor. As the current flow on the positive cable its shared directly and equally to both batteries. The ONLY way not to be equal charge is... Bad battery with bad cell Bad cable(s) with more than 0.2 volt drop. So if you have a mag-lite flash light do you only replace one of the two AA batteries or do you replace both? Me I replace both. Again if you want to verify a change then use you jumper cables between two point and see if the voltage changes. Say for example the passenger NEG cable was bad and showed a 0.3 volt drop which is a failure. Now take a set of jumper cables and jump between the block and the passenger battery. You should see a +0.3 gain of voltage at the battery. Now that tells me exactly that passenger battery cable is BAD and requires replacement. Adding that parallel cable will ultimately mask this and the cable can fail and now stress the remaining driver side ground which is not and will start to fail from over current. This why I DO NOT suggest this parallel cable mod nor suggest moving the sensor which is not going to change the charging which is still set for between 13,2 in the summer heat to 14.8 in the dead cold winter.
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Battery Temp Sensor question
No, it will not make any difference. If all cables are the same then the voltage is the same. Alternator will deliver equal voltage to both batteries. Moving the sensor will not change that out come because if cables have the same voltage the charge is the same. The batteries do make a difference if one has a shorted cell and the other doesn't. Regardless your back to the same problem the battery temp sensor is NOT a protection device but to set the charging voltage that's it. It will not protect a battery... When all the cables are equal then it up to the batteries to charge equally which both batteries will warm up the same. Like in my house battery bank I've got one temp sensor. It will not prevent the far left battery from temp swings again if the battery are all equal the temps are all the same TILL you have a battery or single cell that is shorted now that SINGLE battery or cell will get hot. It not the battery temp sensor job to throttle back because of a bad battery cell. It's up to the owner to replace his BATTERIES not move the sensor to attempt to throttle back for a dead cell. Not a good plan at all.
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Battery Temp Sensor question
Back to the wiring... I know W-T has been floating around and keeps telling folks they NEED to parallel both ground and positives. This will not fix the problem. It will not stop a battery from boiling over either. Again if there is a problem with main cables make sure to load test them if there is over 0.2 Volt drop then those cables need REPLACEMENT. I've tested several truck using jumper cables and found ZERO change in parallel ground cables. There is ZERO GAINS. This will not fix a problem with a bad battery cell that is overheating. Again this is due to improper maintenance of the battery and not proper recharged. This is more common with city folks that drive very short distances. You draw out 500 to 700 Amp to start the engine cold than drive barely 5 to 10 miles and shut down then the batteries are still discharged. Again I find more that the OEM main cables are oxided in the jacket, bad terminal that are oxidized, or just plain bad batteries. Like my last Cummins I worked on here, I tested ground cables on had just a mere 0.003 to 0.005 (3 to 5 mVDC) voltage drop. Again with jump cables parallel between ground did NOT change the outcome of the test.
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Drawstraw Users - How low can you go?
Like finding some members in the high 160's for fuel temp is kind of alarming. I can see why people have issues with VP44 and the PSG frying in southern states with it all be returned to the fuel basket. After being to Arizona in early summer and its starts at 78*F at 5am and the ramps up to over 120*F by midday it really hard to keep anything cool but it even worse for some returning hot fuel to the sender basket and re-pumping back to the VP44 and wonder why the VP44 is failing so often. I'm pretty sure the upper limit before tripping the P0168 code is 195*F. Only seen one member here ever post P0168 code... Even the Quadzilla is set up to trip the fuel temp alarm at 160*F. But I've seen several members reporting 150 to 160F temps... Majority are running returns in the fuel basket. Just remember electronics do not like hot temperatures. No there is no way to put a heat sink on the PSG cover. It won't work being there is a air gap between the cover and module. Not to mention the PSG is heatsinked to the fuel side. So if the fuel is hot its going to heat up the PSG electronics. Of course this shortens the life too. Good return flow from the overflow valve helps but again if the fuel is already hot the return flow is meaningless being it supplied with 150 to 160 degree fuel. As you can see in my photo the circuit board is mounted to the fuel side. There is a air gap on top then the cover plate also has a air gap too. So yes fuel temp is important to cooling the PSG module. Now that goes back to people trying to install fuel coolers and fans to cool the fuel before the VP44. Again separate your return and supply so you not pump back the hot fuel and the fuel temps go down.
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Battery Temp Sensor question
Can't for smog controlled states being it will set the CEL and P0380 and P0382... This is why I unhook my grid heaters in April and leave unhooked till October. The power lead is right at the drivers side battery positive. Takes less than 5 seconds to deal with. Most morning I don't even WAIT TO START I just hit the key and go. This winter has been super mild and not really gotten below 32*F for long.
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Injector questions, which vendors?
DELETE function is disabled for all members. Member get the hide function. This prevents members getting upset and deleting all their content. Which has happened long ago. Staff have the delete function but it will not delete instantly. It's held in a "virtual trash can" for 30 days before being removed. This is to catch accidental delete of message(s), post(s), thread(s). This why HIDE is used more so. As for performance I've broke the database down to active post in one spot for quick recovery for daily reading. Then post older than 1 year are put in a archive to store the old post. This was a performance booster. As for content... Oh how I know about that being I've had a legal document sent o me from a fuel additive company for the content years ago. Still in all I still stand up for "free speech". I only ask that every one is polite to other members and treat each other like family. As for illegal activities that is another reason I don't delete there is a track record. If I got to produce information because of fraud or another crime then I need that data for legal reasons.
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Injector questions, which vendors?
@dripleyseen me a support ticket for lack of "hide" ability. If you don't see it. You happen to be a separate permission.
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Battery Temp Sensor question
Absolutely will not... It will not limit the output... Remember I've got this huge 1,000 pound battery system here and it did NOT protect it when 1 cell went bad. Still cost me $4,800 replace all batteries and the only way to fix it is not battery temp sensor but replace the batteries.
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Drawstraw Users - How low can you go?
Only if the fuel temperature is getting out of control. I would move out of the fuel basket...
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volt gauge at 0
Ok. To check the field lead. You need to start the truck and measure the voltage on the blue wire is there +12V? If not the PCM is burned up. Now on the green wire its a "ground" so test the same way using the DVM and it should show -12V or +12V depending on the probe usage. Green side typically will not cause damage but if the blue wire has ZERO volts then the PCM burned up. As for the charge stud. That should pass through a 150A circuit breaker or 150A fuse or even stock is 140A fuse. If the fuse is blown or circuit breaker tripped then reset and see if it repeats. If it does you batteries might not be up to the task or possibly cables. Check both batteries while charging and see if the voltage is EXACTLY the same if not the bridge cable on the radiator is shot possible. Digging a bit deeper if the field lead has power both blue and green working then it could be the armature brushes and slip rings. If there is no power reaching the armature it will never start to charge. You might be better having your alternator bench tested.
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Good tow turbo setup for near stock 24v
I know the feeling...
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Drawstraw Users - How low can you go?
Exactly... This is why I don't have the gelling issues like others, plus remember the fuel heater is in the circuit yet too so the fuel is warmed supplying and leaving the engine eventually it does warm the tank up. Compared to the FASS 150 that left here with the filter hanging in front of the rear tire and in the damage path of slung snow and other road debris.
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Drawstraw Users - How low can you go?
Take a pick? I've got an 180F, 190F and 200F thermostats. Why try tune around cold that much I can just jump to the 200F thermostat. Gain the heat for both fuel and coolant that way.