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Have a 1986 300zx nonturbo that is running hot any suggestions as to causes Its failing the Texas emissions test for CO and HO at low idle speed passes at high speed?
Wiki User
∙ 12y ago
Is rad fan coming on?
It has 2 temp sensors one for gauge light and one for comp. If one for comp isn't working and telling comp motor is cold it will be dumping extra fuel thru cold start injector
I changed the sensor for the computer and it was the problem. Took a while to change it because its in a tight space
Wiki User
∙ 12y ago
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Why does your 1989 Jeep Cherokee fail the nox part on emissions?
If there are no other problems and the vehicle is failing the NOX emissions test, it's probably running too lean. Check the EGR valve, fuel pressure and the Oxygen sensor.
You have no brakes on your 96 Ford Ranger when it is running but when is not running it seems to be fine?
The issue here sounds like it's the master cylinder failing. It is not retaining pressure when the engine is running. The reason they feel fine when the engine is not running is because the failing master cylinder is not getting power, and in essence is being bypassed.
What makes a car idle low at first then get higher after running a while Then also it cuts off when put in gear Its a 1987 Toyota Supra nonturbo btw?
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By keeping vehicles running their best for cleaner emissions.
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Discovered fuel pump is running but there is no spark to the plugs. What now?
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either low on collant or a failing water pump
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Adjust switch on rear view mirror.
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Better fuel mileage. Lower maintenance costs. Lower emissions (less pollution).
Car idle fluctuates from 700rpm to 2500rpms up and down as long as it's running. Whenever I press the gas and let off of it the car stays accelerated for a period of time.?
91 talon nonturbo Check for vacuum leaks. IAC (idle air control) may be sticking or bad.
