Question about 1991 Isuzu Pickup
Posted by Anonymous on
This car EFI, or CARB, ill toss COIN, EFI gas.
what 4 cylinder, name it there are 7 used.
I'll now toss my coin land on GAS 4 cylinder engine. (in usa?)
is it racing too fast hot
or RPM too low hot.?
we cant guess what your statement above means.
the exhaust manifold cracks will cause the 02 oxy sensors to LIE,
to go lean (0volts ) this cause the fuel injection
to go RICH, (cause and effect closed loop rules)
and can idle too slow. (see that word SLOW)
the wrong word you used, after reading this vast times.
"NOT idle at very low rpms"
i decode this to mean?
NOt idle at proper low RPM (800 hot)
or spec 800 rpm , is more clear
that means the idle races hot.
this word is in all books on cars. engine RACES
IF true RACES it's not :
the exhaust crack, but can be if engine EFI slams in to limphome mode, do the flash codes show 12?
you never did those did you , bad idea skipping that. Google isuzu diagnostic jumper and read.
it's not he fuel tank ever,. not RACING.
what can cause any map based engine to race
well frankly LOTS:
but can be reduced to: (physics +)
1: throttle cables jammed. no slack. bad.
2: throttle valve jammed (gunk below it does that)(in the throttle body)
3: all vacuum leaks, (put huge list here, ask)
4: ISC or ICA valves stuck open
5: engine not reaching and holding 180f will cause #4 above to fail, naturally. bad thermostat. cause.
6: someone hacked your TB. (ask)
TB = throttle body.
vacuum leaks is an all day wall of text post
i refuse. but do have links to them.
Posted on Mar 14, 2017
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Posted on Jan 02, 2017
the float in your gas tank seems to have water in it....water is heavier than gas, that's why gas floats on top of water....try putting something like HEAT in it to dry up the water in your tank....
Posted on Feb 03, 2009
I just changed the brake pads and rotors on my father's 2001 Trooper that he recently purchased because they were shaking just like your were. He bought it from a mechanic shop and they had put new pads on it but it needed new rotors as well. If there is noticable groving on the rotors and new pads are installed it can create shaking, sometimes severe, when the brakes are applied. It sounds like this is what has happened with your vehicle as well. That being said, I don't consider it a huge safety issue to drive it until you get it fixed, just know that your braking will not be optimal and that it will take you longer to stop than if the brakes were working properly. All that being said, get them fixed ASAP so you don't have to worry about it. Who wants to mess with safety right? Good luck, hope this helps!
Posted on May 18, 2009
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