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Chevy Blazer GMC Jimmy Maintenance and Repair

3449 messages, Last post on Nov 07, 2009 at 8:55 AM
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Replying to: johnss10 (Oct 29, 2008 5:59 pm) |
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Replying to: impalacab (Oct 01, 2008 9:13 pm) So you get a big ATTABOY from me!!! |
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Replying to: mrurl (Feb 01, 2001 12:48 pm) |
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Replying to: tgraham2 (Feb 15, 2001 3:24 pm) |
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Hi, I've got a 1998 GMC Jimmy with 260000 miles. Car has been nonstop. Minor repairs. Been using Amzoil for a couple of years. Wife went to start and it suddenlly stopped with quite a jar. After that it would crank but backfire through intake. I set #1 at TDC and distributor was facing #4 Pulled distributor and gear is in tack. I have pulled the timing chain cover and all is well there. Marks line up on crank gear and cam gear. So I'm pulling motor. But was hopefull someone might have experienced this. Could cam gear have slipped or is it machined to cam? Can distributor have enough lateral travel that cam and distributor shaft would disengage? Any help would be appreciated. Thanks, Buzz |
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Replying to: buzzh (Nov 18, 2008 6:17 pm) Don't pull the engine... I had a similar experience with a Chevy V8... Just as the engine started to crank... it stopped with quite a jar... just like you described. Any further attempts to start at that time... and the engine acted like it was locked up. I let it sit for a couple of hours... then it started... but had a lifter noise in #8. I noticed that the plug wire had come loose... but was still on the plug. The engine eventually started again... but took half a tank of gas before the lifter quieted down. I have been using Amsoil since 1978... I use it in my 96 Blazer... and my 81 Grand Prix. Suggestions: Pull all the plugs... see if the engine will crank... if so... see if any fuel comes out of any of the cylinders... particularly 5 or 6. If so... the most likely cause is a leaking fuel regulator inside the plentum. Let me know what happens... TJ
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Replying to: quantumtouchfl (Nov 18, 2008 6:49 pm) I've negelected Jimmy far to long. Pulled the radiator and the lower half was clogged. I'll pull the accessory brackets and pull plugs, it needs a tune up something bad. l just want it last till next summer when we'll buy something newer. Thanks for the advice and I'll post what I find, sometime this week. Buzz
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Replying to: buzzh (Nov 18, 2008 7:30 pm) The transmission went down at the 162,000 mile mark... 3-4 gear clutch pack finally went. I purchased vehicle with 81,000 miles in 2004... flushed the transmission three times before it went down. I found a shop that had all kinds of test equipment... for testing the solenoids, valve body, etc... all the parts inside so that they knew everything was working before the put anything back in the tranny. They also insisted that the transmission be filled with Synthetic ATF... I had no problem with that... as I had never had the opportunity to use the Amsoil ATF. Trans runs about 50 degrees cooler. I currently have 182,000 miles... about two years ago I wanted to put a dist cap on with brass contacts. I order my wires, cap and rotors from Jacobs Electronics. The cap and rotor I orderd two years ago... turned out to have aluminum contacts when I opened it this last June. I did not change it right away... because I had just changed out the cap, rotor, and wires with AC Delco parts... I should have done so right away. Anyway... about six months ago I called around looking for a cap with brass contacts... AutoZone and Advanced Auto gave me a price of $65.00... too rich for me... so I just put it on the back burner. I checked again two weeks ago... Neither store carries them... so I ended up at NAPA... $41.00... I will be buying another dist cap next mount to keep on the shelf... my point is... the brass contacts made a big difference in idle and performance... still getting numbers on miles per gallon... but before I did the change... I was getting 20-21 MPG. Take care, TJ |
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Does anyone have a diagram that shows the wiring harness to the shifter... plug has about six wires... locks the shifter when in park... grey is instrument lights... for the selector window... black is usually ground... I need to know what the other four are... one is pink... one is yellow... one is purple... if I remember correctly. Thank you, TJ |
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Every time I'm towing a load ( tent trailer or utility trailer ) with moderate loads, going up hills causes the engine to misfire and lose power. Eventually, the check engine lights comes on to indicate P300 ( misfire undetermined ). What is the first course of action to take except an expensive tune up?
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