Question about 1995-1997 Chevy Tahoe Ignition Starter Alarm Switch

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1997 chevy tahoe misfiring 5 and7.

I have a 1997 chevy tahoe misfiring on 5 and 7 cylinder. changed everythind from a tune up to the ignition and the computer. still having the problem. please help.

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  • Anonymous Feb 27, 2009

    My 1996 chevy tahoe shows a misfire on cylinder one everyone said it the injector ,Everyone being my half *** friends lol but it is costly 2 change the injectors ,should I change all or just one please help thanks code p0301

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Check your FUEL INJECTOR HOUSING. The old style factory housing most likely has an internal crack. OLD style has the INJECTORS AT THE HOUSING with tubes running fuel to the engine. NEW housing has wires running to the INJECTORS AT THE ENGINE. If you have the OLD style then it is probably (99%) cracked. This will cause fuel to be sprayed into neighboring cylinders causing a firing problem. This crack IS NOT visible because it is internal. After exhausting all the regular solutions to your misfire with no success, you will probably try to replace the individual injector (like I did....cost approx. $300) and you will still have the misfire. To replace the entire housing with injectors will cost around $400. Good Luck.....on other forums, I've seen people replace anything and everything (including engines) and still had problems with the misfire.
If you're in Louisville KY and need a mechanic (not a parts replacer) for this, try Tony Johnson @ 3215 Fern Valley Rd. 502-387-0847

Posted on Sep 20, 2012

  • janet prigden Mar 06, 2013

    i have put a new housing on it thanks

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Mmine showed the same thing and it ended up being the fuel pressure reregulator leaking into #5 and #7 ports. it's directly attatched to the ininjectors under the intake plenum

Posted on Jan 28, 2013

  • janet prigden Mar 06, 2013

    i will look at that thank u

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SAME THING HAPPING TO ME!!! changed every thing and any thing... iam up to $800.00 this sucks. its giving my truck a bad name! but who cares chevy ROCKS!!!

Posted on Sep 20, 2011

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I had a 1995 tahoe that did the same thing.. turned out to be a blown head gasket ! it is probably spark knocking also !

Posted on Nov 03, 2009

  • janet prigden Mar 06, 2013

    all that isnew thanks

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Change you spark plug wires

Posted on Jun 21, 2009

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#5 and #7 are easily confused because they are right next to each other in the firing order of 1-8-4-3-6-5-7-2 , you should have a flat style cap . check to see if the wires are crossed !!

Posted on Jan 02, 2009

  • janet prigden Mar 06, 2013

    i have done that like 10 times thanks

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Another possible cause could be that the timing is not retarding when the vacuum drops under acceleration.

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