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Prev Professional Automotive Repair Technical Discussions for March 27, 2004
International Automotive Technicians' Network (iATN) - Members Only
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1966 Cadillac Sedan De vil 429CID engine VIN: 68357FWD21
I have a dead #7 cylinder. Pull plug wire off and no change. There is no noise, clatter of valves or anything else. Engine runs very well for a 7 cylinder. Compression 1- 185 lbs 2- 185 lbs 3- 195 lbs 4- 175 lbs 5- 175 lbs 6- 180 lbs 7- 180 lbs 8- 180 ...
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1994 Cadillac Seville SLS 4.6L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 1G6KS52Y2R
hello fellow techs having major problem with caddi vehicle runs great at times at idle will surge and mil is always on sets codes for 24 x signal est problem as well as some others. codes will come back right after they are cleared hooked up vantage to scope... Trouble codes: 23 (25 -), 25 (47 -), 47 (83 -), 83
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1997 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY22G9V
I take over this car from another tech who nolonger working here .This car have check engine light come on code P1416 Air system bank2 he did change air pump , check valve O2 sensors but 1 week later the car came back with same code i did check air pump workin... Trouble codes: P1416 (air system bank2)
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1992 Pontiac Grand Prix SE 3.4L Unknown VIN: 1G2WJ51X7N
Does anyone have any information on removing this transmission. Our book sayes to remove the left side of the subframe. The subframe on this car is one peice. Do we have to remove the hole subframe or is there some other way of getting this transmission out. K...
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1995 Pontiac Grand Am SE 2.3L No Start, Cuts out, Stall VIN: 1G2NE15D5S
after running for 1 hour & road testing--step on gas & shuts off -- will not restart--when it dies-looses spark & inj.pulse--fuel pressure remains good--if you cycle key will restart-
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1996 Pontiac Bonneville SE 3.8L Climate Controls VIN: 1G2HX52K8T
Customer brought car in stating A/C inop. Verified to find compressor turns on when commanded by electronic climate control center but vacuum motors do not respond to commands. All air is routed through heater core and is blowing to defrost. Found good vacuum ...
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1999 Pontiac Grand Am SE 3.4L Steering VIN: 1G2NE52E7X
Car has a major clunk when the vehicle came in. A drive-ability tech diagnosed the noise and replaced the struts and bearing plates. He is a great drive-ability tech and he was technically right... the bearing plates were worn, rusty and sticking but of cour...
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2001 Pontiac Sunfire SE 2.2L Engine VIN: 1G2JB524X1
Have a 2001 Pontiac Sunfire with what sounds like a valve tap when started cold. Engine also running very rough/lacking power until it warms up, then runs fine. This is not a timing chain noise. Previous shop supposedly rebuilt cylinder head, but problem resur...
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Fixes & Summaries for GM
Fix/Summary Answers
1991 Buick Century Limited 3.3L No Start VIN: 3G4AL54N3M
i went through my troubleshooting to verify my previous results-such as diconnecting module,hooking up injector test light and disconnecting fuel pump relay. then with the key on i touched terminal c with a test light connected to pos term on batt. every time ...
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1995 Chevrolet Astro CL 4.3L Poor Idle Quality VIN: 1GNEL19W7S
The Van passed the emission test so the client doesn't want to spend anymore time on this condition. He has decided to live with it. I received several responses about the spider assembly leaking fuel into the air plenum and I would like to bet that is the act...
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1997 Chevrolet S10 4.3L No Start VIN: 1GCCS14XOV
this vehicle is fixed,customer had chosen an aftermarket fuel pump instead of OE fuel pump-original pump had rubber insulators on bottom of pump whereas aftermarket pump did not, so it is noisier than the OE pump
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1999 GMC Jimmy SL 4.3L Poor Idle Quality, Misfire VIN: 1GKCS13W8K
hey guys.first fyi.both heads were done.a running compression test revealed valves not seating.needless to say i am looking for a new machine shop.but anyway it just goes to show you that cant always rule things out just because it was already supose to be don...
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2000 GMC Jimmy Diamond Edition 4.3L MIL Lamp on VIN: 1GKDT13W0Y
Took a very long time to find out if vehicle was fixed.Customer decided to go to Fl. for vacation.They came in for an oil change-everything was ok with the vehicle.Like most responces said,replaceing the air pump and rerouting the line going up by battery took... Trouble codes: P0410.
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1990 Oldsmobile Cutlass Supreme SL 3.1L Misfire, miss load & idle hot VIN: 1G3WS54T1L
First, thanks to all that sent replies. The fix was either a bad injector or a plenum gasket leak. Not sure because I changed an injector on #3 cylinder and also changed the plenum gaskets. Works like a champ! Does anybody know of another way to fix spark plug...
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1991 Pontiac Bonneville SE 3.8L speedometer VIN: 1G2HZ51C4M
Only got a couple of replies on this one, but all agreed that the speedometer was likely at fault. In fact we installed the new[used] instrument cluster today and the speedo/odometer worked just fine.
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1994 Pontiac Bonneville SE 3.8L Cuts out, Stall, Misfire VIN: 1G2HZ52L5R
Thanks to all for the suggestions. We replaced the crank sensor as a precaution, having seen them cause erratic behavior on other 3.8L engines, but did not help here. We caught a break later in the day, as the car would not start. Crank and cam signals were go... Trouble codes: 1571 (traction control input out of range), 1361 (EST line not toggling), 341 (intermittant cam signal).
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