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I´m new to this forum and I am writing on behalf of my father who owns a Chevy 1500 Silverado with a 6,5 litre V8 diesel engine. This is his pride and joy...but unfortunately he is having major problems with it.
The truck is, for lack of a better word, quite moody. It will occasionally start ok and run with no problems whatsoever - no stuttering or other problems, and then suddenly stall and die. It can be really hard to get it started after this has happened. Now...I´m no mechanic but I will try to relay and translate what he has done with the truck so far:
-Fuelfilter is replaced
-Fuelpump attached just beside the tank is also replaced
-Tube/pipe inside tank (suction-pipe?) is also replaced.
Battery is quite good and not yet a year old.
Outside temperature or humidity doesn´t seem to be an issue (damp weather and so on). Strange thing is that the truck stalls/dies without warning....no spluttering or misfiring etc.
My father suspects an electronic fault...and before we go to see the mechanics I would like to hear any advice you can offer.
I´m thankful for any input that could get my fathers beloved truck up and running again...:)
Best regards
Patrik
I suppose my father needs to take it to a garage somwhere...just to get it checked.
I have read a lot of forumposts but almost everyone with stalling problems seems to have a spluttering, misfiring truck or electrical trouble. This one just dies...completely ..in one go. Not so much as a hiccup even... :confuse:
I guess troubleshooting by professionals is the next step.
Did you find out whats wrong with your truck then?
While driving at speed (55 mph) truck will stall and within seconds restart on its own as if nothing happened, and continue to run as normal.
Truck also has continues to stall after a couple minutes while at idle.
Temp does not seem to be at issue as it does this when cold or at normal operating temp.
Replaced battery in spring this year, ICM last fall.
No sensor code is appearing on scanner.
The service engine light will stay while having the not firing problem, but shuts off after it finally decides to start.
Any ideas??
1. Cleaned throttle bottle. It looks brand new.
2. Replaced IAC. Reset and drove for 1 month now.
3. Replaced fuel pump
4. Replaced fuel filter
Could it be fuel pressure regulator, vacuum hoses, bad ground?? I am almost out of money and need some help as well before I am completely broke.
I have sprayed throtle bottle cleaner in the intake with the truck running at about 2000rpms and let it do its thing and it hasn't helped.
I reset the IAC by turning the ignition on for 30sec. Turning it off for 10 sec. Then starting it. I was told that was the way to do it.
I'll try resetting the computer again to see if that helps. I plan to unplug the negative and let it sit for about 10 minutes.
I haven't checked the regulator for gas yet, or done a pressure test on the vacuum system either. I might get around to that this weekend.
Anything else you guys can think of? I'll keep trying until it's fixed!
What is the IAC and what is the proper part # for it?
I tried to get the optical/fuel temperature sensor, and was told that part was discontinued!!!!
I don´t know what cause this failure, can you help me.
thanks in advance for your help,
John
What didn't work - new air cleaner, replaced OEM with 130K miles; re-charge low battery (maybe it was a battery/alternator issue? It wasn't); 30-minute idle reset after all engine codes erased.
It ran well before but stalled as it slowed to approach lights or stop signs. Now it runs great!
It's a 350 5.7L with about 250k on engine and tranny also only when it dies the check gauges, and service engine lights come on, ill wait a few seconds, or even throw it into N and start it right back up again most times it will twice only i had two wait a minute or two but again it starts right up and drives until this happens again.
Any help or ideas will be much appreciated Thanks
Thanks for your help :sick:
I sold the truck, to a co-worker.
The issue was a degraded connection at the cap. The two wire connector at the top had corded soo badly that it was only making intermittent connection.