Question about 1987 Chevrolet Blazer
I checked all the fuses they are all good. Replaced the fuel pump relay, that wasn't it. It was running a little rough and every so often engine light would come on with a code 44 I believe, changed O2 sensor as well as the TPS.
It has to do with the secondary air intake. first check for any cracks or leaks in the air intake system. most cars have a plastic routing tube that cracks or gets a hole in it from friction . could be even a bad clamp.check these places first. you might want to disassemble the whole air intake hose apparatus so you can really see whats going on on the bottom side.good luck ,and give me a rating if it helps,Gary
Posted on Apr 19, 2014
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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
SOURCE: Rough running and rough idle
Doesnt sound at all like an electrical control issue... more like a tune up...
How many miles? If its hard to start its typically due to spark plugs being worn down with age.. that engine has individual coils per cylinder so there are no "cap, rotor or wires" involved... just replace the plugs, they are platinum and they are about 8-9$$ each x8... but that is what you need
Posted on Nov 25, 2008
That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
Posted on Jul 17, 2009
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