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Chevrolet Blazer Engine and Performance Problems

142 messages,  Last post on Nov 11, 2009 at 9:09 PM

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#100 of 142 Upper intake manifold removal - '96 Jimmy 4.3L by mwolf9000 Oct 28, 2007 (8:15 am)
I'm trying to remove the upper intake manifold on my '96 Jimmy 4x4 as I appear to have a coolant leak from the lower intake manifold. I've removed the bolts from around the edge of the upper intake manifold and it won't come off. It appears that it's being held down by the two bolts near the center that were holding down the fuel lines. But the top of these two bolts appear to be a male Torx T-15 and I can't find a female T-15 size female socket to remove them with. So ... what do I do?
#101 of 142 93 chevy blazer engine problems? by chriscwb Nov 03, 2007 (9:42 pm)
When I go to take off it doesnt want to go and it will bog down and or stall,and when I start goin down the road it sometimes does not want to shift and then sometimes it will not go over 2,000 rpms and i will only be going about 50 mph.When the truck is just sitting in park I can rev it up and everything and it will do fine,sounds good and every thing but when I go to take off all that happens.Also when I start it white smoke comes out of the tail pipe any suggestions,I have checked fuel filter,injectors,plugs,coil but nothing any info and I would appreciate it thanks
#102 of 142 95 blazer misses when warm by grose69 Nov 08, 2007 (9:19 am)
have a 95 Blazer with 185000 miles on the original Vortec V-6. Lately I have noticed the engine running poorly after it gets warmed up. I just changed the plugs, wires,cap rotor and O2 sensor. None of this seems to have helped. When you first start the engine, it runs as smooth as the day it was built. After about 30 minutes, the miss starts. I have also noticed a significant drop in fuel mileage as well. Any ides?
#103 of 142 97 Blazer acceleration issues by wm1210 Nov 09, 2007 (10:08 am)
I have a 97 Blazer with 140K on it and it has been having some acceleration and performance issues. At times the acceleration is very sluggish and then it at other times it is normal. The sluggishness tends to be more pronounced when the fuel tank is full and then occurs less when the tank is below half. I recently had a tune-up and had the fuel pump replaced, but the sluggishness still exists. My mechanic indicates that the computer is not throwing any codes and hesitates to guess at replacing any parts. Does anyone have any thoughts? Thanks!
#104 of 142 New Engine noise by cincyblazer Nov 10, 2007 (11:34 am)
Just today, my 2002 2-Dr blazer began making an engine knock at startup. Once the Engine temp reaches 210, the noise stops. I have also noticed that the oil pressure guage fluctuates while driving. Does anyone have any ideas. Replies to this message: jlflemmons (Nov 15, 2007 3:09 pm)
#105 of 142 Re: New Engine noise [cincyblazer] by jlflemmons Nov 15, 2007 (3:09 pm)
Replying to: cincyblazer (Nov 10, 2007 11:34 am) Low oil???   How many miles on the engine?
#107 of 142 2002 Chev. Blazer 4.3 S-Belt Tensioner by utmo23 Nov 15, 2007 (6:06 pm)
How much movement should there be in the tensioner and when should it be replaced?
#108 of 142 95 Blazer electrical problem by jimbob11 Dec 30, 2007 (7:12 pm)
Have V-6 Vortec- When I turn on w/s wipers, they don't start right away and the radio turns off. There is a audible buzzing coming from the dash or the cowl area(drivers side).This lasts for about 10-15 seconds. After I turn the wipers on high, they will eventually turn on and the radio will come on also and the buzzing stops. Ever since I've had the vehicle, when I turned the wipers on intermittent, the radio would stop playing when the wipers came on, when they paused, the radio would play. Now the the buzzing problem. During all this, the battery never seems to go into discharge. Any suggestions on what to check? I have had no other known electrical issues.

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