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Dead truck

dripley
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dripley

dripley

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Well after all the nice things I have done for my truck it died today. It has cut off on me maybe 6 times at idle over the past 3 weeks but always started right back and kept going. I gues she paying me back for ignoring her. My scan gauge said there were no codes. I did the key trick and got a P 1694 code. I hooked up a snap on solust to her and it read no codes. Thanks to @Haggar for that and I am going to bring back to you. I tried to connect with the PCM and it wont connect, then the ecm with the same results. Checked the codes again and nothing, no connection. Even reconnected the scan gauge and now it will not connect.

I ruled out the lift pump by hot wiring it because the ECM was not turning it on.. I also have no WTS. I wont start she just turns over. I left the key on for quite a while and never saw the WTS illuminate nor would it start. 

I guess the truck is brain dead. Hope its not both of them. What do ya'll think?

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dripley

dripley

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10 minutes ago, Threadzy said:

I hate to say it but sounds like a bad ECM. 

Cant disagree with that, but cant help but hold out a little hope its not. I just went out and did an instrument cluster test. That did not show anything but the WTS light came at the end and fired right off. No surprise there. The Solus connected this time and picked up the 1694 in the PCM and cleared it. Been running for 30 minutes now and up to temp. The few times it did this was on cold or hot engine, did not care which. But today was the first time it shout down for an exteded period. 

Going to let it run for a while and see what happens.

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LorenS

LorenS

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Any update? Being intermittent sounds like a basic electrical connection problem. If a computer is smoked, it doesn't work at all. Now, the electrical connection could be a solder joint in the computer so still beyond a normal DIY (maybe for W-T, but not mere mortals!)

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dripley

dripley

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24 minutes ago, Threadzy said:

Didn’t you recently have your ECM rebuilt? 

This one is a new one I replaced the oe with back in 2010.

31 minutes ago, LorenS said:

Any update? Being intermittent sounds like a basic electrical connection problem. If a computer is smoked, it doesn't work at all. Now, the electrical connection could be a solder joint in the computer so still beyond a normal DIY (maybe for W-T, but not mere mortals!)

It sat idling for an hour this pm and didn't miss alick. Restarted find a couple times. Still a bit leary to drive 65 miles to work though. Hoping it is a bad wire or ground. Going to take it over to my sons work in with ac in it over the week end and see what I can find.

 

For anyone. Does the instrument cluster have anything to do with the ECM and PCM cummunicating?

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JAG1

JAG1

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You might be on to something Dripley because my truck has this 'CCD' occasionally come up on my overhead. Never have figured out why. I think it might be wise to check the W-T groundings  and others(might have come loose somewhere). Do the simple stuff like check battery condition, clean posts, look for voltage drop with the meter etc. I think it something simple. :pray:

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Mopar1973Man

Mopar1973Man

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Wait to start not coming up is a ECM internal issue more so with booting up.

 

P1694 code has to be dealt with before getting forward. Also if the ECM is not booting up in a timely fashion it could also trip the code from the PCM side as the PCM is asking the ECM question and there is dead silence from the ECM. (Not booted!) Remember the companion module is always the ECM. Then the Primary computer is always the PCM which is the main ring leader!

 

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dripley

dripley

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Didn't get to do much with truck this weekend except to redo the ground splice near the pcm that @IBMobile has an article on. Idled the for about 3 hours and ir ran fine. WTS light always came on. So after soldering the ground splice I took off up the road. Didn't  get a 1/4  mile and it shuts down. No WTS light and no start. 1694 code is present. To late to do the diagnostics on it tonight. 

My question for know is what does the instrument cluster have to do with bringing the WTS back? Thats twice thats happened and this time I know the WTS was not working prior to running the test on the cluster. Maybe just a fluke. I have a spare cluster and will throw it in tomorrow if its not to late in the day and see if it makes a difference. For now I dont trust it to get to work.

ACS will repair that part of the ECM for 200 bucks. The down will suck for the work and shipping time involved however. Aint life a ***** at times.

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dripley

dripley

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5 minutes ago, Great work! said:

Get it started again and stress things. Tug - tug on all wiring and tap on everything  electrical PDC ECM fuses relays with a screwdriver handle or small rubber mallet see if it dies.

Got home to late tonight and most likely the next 2 days. I could see something loose causing the issue but cant understand why running a diagnostic on the cluster brings the WTS back to life

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dripley

dripley

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I dug into it a bit yesterday and checked a couple grounds, the one at the kick panel drivers side and looked for one under the drivers side battery but could not find one. Do the 02's have that ground there? I did find one on the drivers side head light bucket with 2 wires on it. Both were clean and corrosion free. Idled for a while no issue. I had to run out on couple errands yesterday, more on that in a bit, and drove the truck and she never missed a lick. Both about 10 mile round trips. I hoping that maybe messing with them did some good and were maybe the problem but we will see. Going to mess around with it some more today and see what happens. I am driving the truck to work tomorrow.

I spent a good amount of time researching the issue on the internet and did find some folks that solved the problem with grounds or wire connections, a minority for sure but enough to hope my ECM may not necessarily be the issue. I never did find anyone who tried running the cluster test like I did when the WTS light was dead. But it has worked the last 2 times it happened. 

 

The funny part of the day.

I needed to change the oil in wife's Chevy so I drained the oil and while it was draining I was working on my ride. After a bit I go to put new oil in the Chevy and realize I have the wrong oil. So this was the first trip I took in the truck. So I get back and put the oil in the car wait a minute and pull the dip stick. No oil on it. I scratched for a minute then look under the car as the last dribbles of that nice clean oil drain out into the waste oil container:doh::doh:. And thats where my second trip in the truck came from. Just another double dumb arse day at the Ripley garage. At least the truck ran good.

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dripley

dripley

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1 hour ago, Threadzy said:

Both mine and my brother in-laws ‘02 have the ground wires and lug under the drivers side battery. 

I have to believe it is directly under the battery tray then. I have stuck my hand into every nook and cranny I could get my fingers in.

1 hour ago, Royal Squire said:

Must have needed to be flushed 😂

Cant swear it needed it, I just know it got one quick flush.

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