2nd Generation Dodge 24 Valve Powertrain

Hi, I am in need of help with my truck. I just did the head gasket and had the head surfaced, put in arp head studs. Put the truck all back together and now it starts hard. It takes two good cranking sessions when it's cold(40 degrees) after sitting all night and even with the engine hot it still takes a good 15 second crank to fire. The truck was extremely hard to start after reassembly, it took a lot longer than normal to bleed the fuel lines than previous times. My grid heater is working and my wait to start light is working. So why is it starting hard? It used to never crank more than 2-5 seconds cold. I can't find the plugin for the IAT sensor after putting the head …

UPDATE: Ok, when the head went on my truck for some reason the key was turned on a few times with a bunch of the sensors unplugged. When I had them cleared the check engine light wouldn't go out. Most of the codes went away but I still had one or two. I've had to fix so much on this truck I've been a little overwhelmed on what to do first. Everything seemed fine with that stuff so I've tackled a bunch of other things. But now I have a P0113 and P0382. The truck stalled at a stop light the other night and wouldn't start. I don't have any codes for the VP. So I don't think its that but I know its always hard to tell. This is one of those weird problems. But I don't actually…

I have always gotten a random P0121 code usually I clear it and it comes back in a couple of months. But this time I caught it in action with my quad. When the dead pedal happens the quad show the throttle 100% open and stays that way till I push the throttle a couple of times. Has anyone else had this issue? Also I need to do the W-T grounding mod. Hopefully on my days off coming up soon. My fuel pressure is 15-16psi, checked for AC voltage 3 months ago and it was good (Will do it again before and after the grounding mod), and this has happened in hot and cold weather, short or long drives.

So today I get a dead pedal / stumble off idle, erratically. First time it happened once on my 12min drive to work. Coming home it dead pedaled maybe three times. Could be dangerous when pulling out into traffic. Yesterday I did a 10 hour round trip at a high rate of speed, hit 130mph per GPS on my phone, did much of the trip at 85-100mph often pulling upto 110-120. Lets just say it was some real long, real open old highway and I had a long way to go. *I was trying to get back before it got really dark, any tips on additonal lights I could mount on my bumper that are cheap and effective I am open to. So the kicker is its a P0121 code, which after r…

Well looks like time to upgrade to a TIMBO APPS!Truck just felt like I turned off the key for a moment yesterday on the way home, and on came the CEL!Ran fine the rest of the way home, got out the scanner and sure enough P0121, followed mike's article on testing for the cause and all pointed to the APPS.Placed my order for a TIMBO last night, hope to see it soon.

Had all 5 of these codes pop up at once after changing all of my better connections while trying to figure out my electrical issues. I’ve been dealing with a p0121 off and on for 3-4 months, replaced my APPS, dead pedal came back 3 wks later. Coincidentally my trans (auto) started not going into gear in drive or reverse until I rev up to about 1k rpm’s. I did the BD diesel noise isolator and for a few days it drove perfectly with zero shifting issues or dead pedal. Then started having overboost codes and then the truck randomly died twice. Replaced batteries and redid connections and triple checked the connections, and now I have those 5 codes. Thinking ECM going out due …

Hey guys, finally got my stealth plate installed and got everything buttoned back up to go for a spin and had the cel come on throwin the P0122 for low voltage. I read through the troubleshooting briefly but was wondering if there was anything quick I should check since I just had the apps unhooked to install the stealth plate?

I have just recently got my hands on a 2000 ram 2500 with 24v and 5 speed tranny. I drove the truck for a few days and it threw code p0122 and p0234, had diagnostics ran and replaced the apps. Drove for 1 day with no engine light and then it cam back on with the same codes. Got them cleared, checked voltage on apps and got it to .51 dc. Drove truck again and it done good for a few days then the light came back on with p0122, p0500, and p1693. I’ve checked voltage again on apps and it was .39 and couldn’t get it to set around .51, I’ve checked all wiring and grounds and it all looks good. truck is completely stock as far as I’m concerned beside a cold air intake. Please he…

Posted in 2nd Generation Dodge 24 Valve Powertrain Hello all ! Recently the p0122 came on my 99 cummins, with severe driveability issues, when the throttle is pressed it revs up then dead peddles, revs up then dead peddles. I found Moparmans P0122 test and was working down the list, got to step #6 and I'm confused now if I need a ECMor an APPS. The step is as follows "6. Check Dark Blue/ White wire for continuity between terminal no. 5 on apps harness and terminal No. 31 on ECMharness connector . If continuity does not exsist, repair Dark Blue/White wire" if…

Posted in 2nd Generation Dodge 24 Valve Powertrain Hello all ! Recently the p0122 came on my 99 cummins, with severe driveability issues, when the throttle is pressed it revs up then dead peddles, revs up then dead peddles. I found Moparmans P0122 test and was working down the list, got to step #6 and I'm confused now if I need a ECMor an APPS. The step is as follows "6. Check Dark Blue/ White wire for continuity between terminal no. 5 on apps harness and terminal No. 31 on ECMharness connector . If continuity does not exsist, repair Dark Blue/White wire" if…

I want to start off by saying a huge thank you to @Mopar1973Man for providing this excellent resource for the ram community! I had the P0122 code and the truck would just randomly turn off after a few minutes of running. Would happen whether parked, driving, on a hill, on flat gound, under acceleration, and deceleration. It didn't matter what the truck was doing, it would just turn off. It started off doing intermittently and then just got worse and worse to where it happens quite frequently. I replaced the factory APPS with a Timbo APPS and did the learn procedure. It seemed to fix the problem. But after a while the CEL would return. Then started the random d…

Hello, I have a 2001 Dodge Ram 3500 5.9 4x4 5spd. I started having a dead pedal and surging issue a few days ago. OBD reader shows low voltage to TPS. I used mikes diagram and made it to step 9 and I had continuity with the PCM and ECM orange and dark blue wire. It’s saying repair short to ground in the orange and blue wire. I checked all of the grounds to the ECM and PCM but I’m not sure where to check for the orange and blue grounding. I would appreciate any help that you guys can offer. I’m not a very good mechanic and no one in my area can even get my truck in the shop until September 15…

Guys I’m new to this, My truck (2000 ram Cummins) is throwing p0122 on the dash, and p0222 on the scam tool. Just changed and cleaned the battery terminals, also changed the tps, now I’m lost. I did the whole disconnected battery’s and when I turn it on the p0222 is still on. When I drive it, the truck jerks when I’m just cruising, if I stomp on the fuel it drives fine. WhT do y’all think It could be? Anything helps

02 2500 5.9 driving through the road block all legal like, went to accelerate and truck started bucking horribaly. ck eng light came on so limped home, scanned ecm p0122/ installed new apps assembly from autozone, no change, found ecm reading apps but would fall off intermitantly then return. so read tcu and found apps signal smooth with no glitch. so i replace ecm no improvment, checked wiring and added ground wire on apps sensor no problems found, hooked all up set voltage on apps sensor now i have no apps reading on ecm and eng. revs wide open when brought off idle, tcu still showing good apps reading. i ordered timbo apps today, and will try but if i read schematic ri…

Hi guys my trouble with apps came back cause of cold weather here. Tonight I've gone for a little ride everything OK . Little trip at the market, on my way home after start the truck it has 5-7-8% of apps. I had no speedometer. Before I had the glow plug circuit 1 trouble code when the cold has arrived!!!! I'm thinking of electrical problem or if the heater relay can cause those problems?? need help about this one. its weird!!! thanks

So I've got 4th gear hunt on my truck. It is intermittent. I've had the alternator tested every which way and it always comes out good, be it bench testing, on car etc. It's also pretty new. I've gone ahead and done that ATS fix to bypass the ECM, but immediately threw a p0123. I did an apps reset, tried to clear the code and still there. Truck runs ok, but I'm at a loss. I'm supposed to roll out for my trip on Sunday. Any thoughts?

Ok, So I bought a 2000 dodge 2500 4x4 auto, quadcab. When I bought it is seemed to run and shift fine. I got a pretty good deal on it and was a little worried something might be wrong. Well of course I didn't know about key trick to check for codes until I started working on it at home. When I bought it there was only 1 battery, so I bought two new batteries and installed. I also bought a raptor 100 and installed along w/ fuel filter. I did both of these at the same time. Since then I am getting 3 codes. p1693, p0216, and P0123. I know the first two point to mechanical ip failure, but it still cranks and runs good. The main problem I have now is the p0123 code…

Hello to the good people of mopar1973man.com! I am very new to this site as far as having a account but have been a avid "user" for some time now. I figured it may be time to settle in after the site change. Looking forward to helping where i can and learning a few things aswel! Anyways, on to whats fun and exciting Please allow me to unravel my situation. I have a 1998.5 Dodge ram 2500 5spd 4x4 (vp44, vin 6) that is throwing one ecu code. P0123. I have read the write up on mopar1973man.com regarding this code. The resulting symptoms consisted of dead pedal, intermitent throttle response, the truck reving on its own only when i touch the throttle. I have scoured the …

hello I have a 98.5 ram diesel which gave me dead pedal intermittent the last week just at start up, then run good all day. it might have been worse on cold mornings. now its staying dead pedal. I have codes p01688 p0743 p0463 p1693 I cleaned all the grounds I could find except the one behind the starter was so stuck, penetrating oil and all. im going to have to take off the starter to get it off and clean that connection. could it be fuel filter or weak lift pump? or all having to do with torque converter clutch solenoid ? thanks. any leads, wisdom, experience is much appreciated

Every once in a while i experience a very quick loss of power as if you turned the truck off and then it comes back and acts normal. The whole thing only will last for a fraction of a second but is very easily noticeable. Sometimes, rarely, but sometimes when I first crank the truck and go to pull out of my parking spot the truck will just instantly die. Then i can fire it back off with no problems after that. Only showing 3 codes which is p01693, p01694 and p0230, I have a mechanical fuel pump on the truck so that's why its giving a code P0230 but I am curious about the others. I'm gonna start by checking grounds and the spliced factory grounds to make sure that couldn't…