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’95 K2500 Suburban no-start issue
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Question
John's Trucks
First off, I'm a new member (see my new member thread), and I came here because you have a "speak to a tech" forum and I have a puzzling no-start issue.
This post is likely to be long and a bit convoluted as the no-start issue has been a bit of a bugger to figure out what’s going on. Also, I’m a bit of a perfectionist, so I like to analyse issues fairly methodically and in some depth. My sources so far have been the Autozone web site and a Haynes manual, which I find to be less helpful these days than they used to be.
’95 K2500 Suburban 4x4: VIN 1GKGK26NXSJ751339: current mileage - 374,363.6 km
Basic Vehicle Specifications (from RPO codes)
L19: Engine:7.4L, 1TBI, V8 / FE9: Certification: Emission, Federal / NA5: Emission System: Federal, Tier 0 / K68: Generator: 105 Ampere / MT1: Transmission: 4L80-E, 4-Speed automatic, Electronic / KNP: Transmission, Heavy Duty Cooling System / GT4: Rear Axle: 3.73 Ratio / G80: Rear Axle: Positraction / JD7: Brake System: Hydraulic Power, Front Disc, Rear Drum, 8400 Lbs / Z82: Trailer Provisions Special equipment, Heavy Duty / No code : Trailer brake controller and seven pin connector / C6P: 8600 Lbs. GVW Rating / Z49: Export, Canadian Modified Mandatory Base Equipment.
History
The truck was purchased privately in October of 2009, and its previous use was mainly as a race car hauler. Since then there have been several issues including ABS problems, fuel pump and fuel line, distributor, front hubs, accessory belt tensioner, exhaust system and water pump, and a few lesser problems. The truck has always been parked outside, and the current issue presented itself in early February this year, first as a no start problem (starter solenoid clicked but no engine rotation) whenever the temperature got below 15*C, especially when parked in the wind. Plugging in the block heater helped to start the engine, but not when the temperature got down to 20*C or so. In mid February we got a warm spell, so I tried to start the engine so I could move the truck out of the wind. The engine started, ran OK for a few seconds, then coughed a bit and quit, and after that it would turn over on the starter but not start, and that is the condition up to date.
Over the time I’ve had the truck I’ve had to replace several components, and the following are those for the ignition, fuel, intake, and exhaust systems which may impact on the current problem:
Preliminary Tests
At this point I realized that in-depth analysis would be required, so I dug out my Haynes manual and got to work as time and weather conditions allowed. I’m posting this part now to give an overview and will post the in-depth testing later after I’ve had time to review and organize my notes and findings.
Oh yeah ... I hope you like long stories.
Also (senior moment) I forgot to mention that I did a search on this board and didn't find a similar issue.
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