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SUVs Chevrolet Blazer Chevy Blazer GMC Jimmy Electrical Problems
472 messages, Last post on Nov 19, 2009 at 4:18 PM
You are in the Chevrolet Blazer Forum. Your Hosts are steve_ & tidester
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Replying to: jlflemmons (Mar 25, 2008 4:36 am)  It's something I've considered doing for lots of parts under the hood, nice to have it narrowed down. Haven't tried jumping it yet. It crossed my mind, but since it cranks so hard, I ruled it out. I guess it's worth a shot. Talked to a GMC dealer, who immediately suggested the fuel pressure regulator or fuel pump. Like I said, it's getting plenty of fuel in the cylinder, but if the pressure regulator is flooding it, then that'd give me the same problem, so I think I'll heat up the FPR, too. He also suggested a vacuum leak, which the mechanic had already ruled out. I agree on the plug thing--he's convinced I have a voltage problem, and wants to try that, or at least pulling and cleaning them. I just don't see it. Thanks again; I'll be sure and post the solution (assuming I find it). And I'll gladly take more suggestions.
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Replying to: judastouch (Mar 25, 2008 7:48 am) Not saying water is the problem here, but just to keep an open mind about what looks right but may not be. Seems half of troubleshooting these newer electronic systems is observation and logic. |
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Replying to: firstshirt1sg (Jan 13, 2007 5:01 am)
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Replying to: pgarrett2 (Apr 09, 2008 11:15 am) I *think* it was indeed the fuel pressure regulator (FPR), though I can't say with 100% certainty. I didn't have an extension cord long enough to reach the parking lot, so I filled a large Zip-loc bag with hot water and set it over top of the FPR and left it for about 20-30 minutes. It fired right up. The reason I'm not certain the problem was the FPR is because we've warmed up a bit here--it was probably almost 45 F when I did this (it was not starting at about 40 and under). So, it might have been the FPR, or it might have been some other part that was warm enough at 45. I thought about trying to start it without first warming up the FPR, but I knew that if it didn't start I was going to flood it, and I was afraid it wouldn't start even after I'd warmed it up. I went ahead and ordered a new FPR, but I think spring has sprung, and I won't know for sure if that was the problem until next winter. |
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Replying to: ktcim1 (Mar 18, 2008 2:29 pm) Mechanic said there was no ignition system problems, but the fuel pressure was 45-50 lbs. From reading other posts, this could be an issue. Any suggestions?
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Replying to: blackhawk05 (May 22, 2008 6:50 am)
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Replying to: judastouch (May 27, 2008 1:52 am) I have had to buy off-brand ignition parts before when caught in an out of the way location and was surprised to see the difference. Even a set of points for something as common as a Ford 200ci 6cyl seemed simple enough until they flew apart at a screaming 3000RPM. Glad you are up and running, and hope that cures the gremlin. |
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| 85 Blazer 350 4x4- New Altenator-Battery-Battery wiring and terminals- New Alt Plug- New Starter- ----Altenator power only randomly gets to the battery- Can I just straight wire it some way. How can this even happen? | |
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