Question about 1989 Chevrolet Suburban
New computer and prom chip , check engine light still blinking ,drove for two days, still blinking ,throwing code 51
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Posted on Jan 02, 2017
The light may have to be turned off with a scan tool. A misfire can happen once or twice and then vanish - maybe a single bad fuel pulse into the cylinder caused it. If it happens consistently then you'll need to look at it. For now though, have the light turned off and don't sweat it.
Posted on Nov 19, 2009
Intermitten problem, as vehicle is running the computer is continuely recording, while the error is happening the code is registered. After the problem is not happening the computer records new information and does not maintain the old. Fix, find a road long enough to get the error code and safe enough to shut off vehicle exactly at the time of the engine light goes off. Place a jumper wire in the A/B ports of the onboard access connectors under side of dashboard under steering columns. This will be a electrical plug in with ten ports, top to left ports are the ones to run a jumper across. Turn on ignition switch do not start, the check engine light will flash. First it will flash once pause flash twice, this is the function code that lets you know the system is working. This will repeat 3 times, watch the code after that. Will work in same way first digit of code will flash and then pause second flash count is second digit of code.
Posted on Nov 19, 2010
This is more of a question, searching for a solution. My car started doing the same thing of rough idle, engine light blinking, etc. I replaced the coils, all the spark plugs and all the rubber conductors. My electric fuel gage is really off compaired to the actual fuel gage. The top speed my car will go is 40mph. I even put "HEET" in my gas tank to see if that would help. Looking for answers please.
Posted on Dec 30, 2011
Is it possible to have any kind of engine or emission related fault codes but not have a Check Engine Light come on? Thanks.
Posted on Jul 26, 2012
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