Question about 1996 GMC Jimmy

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Flashing service engine light, rpm's bounce, loss of power

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You have an engine misfire, to find out which cylinder is the one have the computer fault codes read/checked by a Kragen or Autozone parts store it is free, the last number in the fault code is the cylinder that is misfiring

Posted on Jul 19, 2010

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Posted on Jan 02, 2017

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Engine skipping on a buick Rendezvous


When the check engine light is on, the computer has found a problem that can affect fuel economy or emissions.
When the light flashes the problem is serious.
You need to get the computer scanned for trouble codes to proceed with testing.

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I have a 2002 2.5 dura-tec engine cougar the other day it stalled on a hill and then immediately started again then the engine light flashed and now around 3500 rpm there is an engine knocking. the...


A flashing CEL (check engine light) means the computer is recognizing a "catastrophic failure" in your emissions system, warning you of the possibility of severe damage to your catalytic converter(s). The power loss could be a number of things, but the knocking, combined with the flashing light, means there is a severe problem with one (or more) cylinders. Get your vehicle towed to a shop for full diagnostics.

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The service engine light is flashing, loss of power through rpm range, and has no DTC codes, flashes untill I come to a stop.


If the Service engine light is flashing, that indicates the presence of a missfire condition, also know as pinging, or preignition. If the light is flashing you could potentially be harming the engine even further by driving it any distance at all!

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check whith scanner for codes,it coul be missfire,it need to be diagnostic

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buy new spark plugs. i had same problem

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Engine light flashes when accelerator pedal is applied accompanied by severe power loss and trouble revving up


the check engine light is flashing to alert you to the fact that the engine has a missfire in the ignition system, don't continue to drive this with the condition or u can overheat and damage the catalytic converter.

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I have a 2000 ford expedition the problem i have is that in the morning when the truck is started the RPM gage is bouncing around. once i drive the truck and get to a traffic light and have foot on the...


first of all if you have over 60,000 miles the car is asking you for a tuneup but take it to auto zone and they will put it on the tested for free so you know what you are dealing with.

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