Question about 1987 Chevrolet Blazer
Replaced O2, coolant and MAP sensor. Tune up with filters 6000 miles ago.Passed smog test in July 2012. Doesnt miss or stall. Just service light issue.
You may have a partially plugged fuel injector or a vacuum leak. In addition, do a compression check on the engine. ----------------------------------------------------------------------------------
OBD2 Diagnostics Appareils
Posted on Jan 21, 2013
Ive had s-10's do that and as long as the didnt chatter from low oil pressure i cut the wire to min. but u might try checking the oil sending unit i have also taken them to a garage and they said it was just dust in it where it had some age on it and then i cut it or put black tope over the light an dash
Posted on Jan 21, 2013
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Posted on Jan 02, 2017
you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.
Posted on Nov 20, 2008
COULD BE A VACUUM LEAK TAKE PROPANE TORCH AND LEAVE OFF PUT AROUND ALL VACUUM POINT WHERE YOU SUSPECT COULD POSSIBLY LEAK ENGINE SPEEDS UP THAT'S IT WORTH A SHOT BEFORE SPENDING MORE CASH
Posted on Nov 27, 2008
1- check there is spark come from spark wires
2- check the fire timing by looking for every wire in the right place
3- check there is injector signl
4- check for any vacuom leak
5- try to clean the MAF by brake and parts cleaner
6- try to reset all the code and see what will come after that
Posted on Mar 14, 2009
One of 3 things happened. Either you have a loose o2 sensor connection, You got some bad gas and it gave it some funny readings, or your o2 sensor is going out. When you have an intermittent problem in your o2 sensor. Well, think of it like this. When the lights off, you're probably getting 19mpg, when it's on you're getting 12mpg. Replace it, and you should bump back up to your 24mpg. That's about all that code will do to you. It's your call from here.
Posted on Apr 23, 2009
Check your fuel pressure, and or injectors. You may have too much fuel getting into the engine causing it to burn rich and overheat the converters.
Posted on Apr 26, 2009
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