1996 960 Starts ok but stalls if foot off accelerator
1996 960 Starts ok but stalls if foot off accelerator
I have a 1996 960 and it starts fine but if you take your foot off the accelerator, it stall. Also the positive baterry post gets very hot.
Does it run when cold? But you are in Florida, so cold is relative.
It sounds like maybe the idle speed motor is not functioning, or there is a massive air leak in the air ducting after the MAF. There is a small rubber hose that attaches to the idle speed motor, is that intact? Remove and inspect the idle speed motor if all of the hoses are fine. Once removed, you should be able to lightly twist it and feel the valve swinging back and forth. It can be cleaned out, using intake cleaner, but keep the plugged end up while doing so to keep the cleaner out the motor and it's windings.
Other items that could be causing your problem, massive intake gasket leak, bad throttle sensor. Spark plugs condition? Fuel pressure regulator is leaking and vacuum is pulling raw fuel into the intake?
Are there any codes, check engine light on?
DanR '94 964 387,000 miles (153,000 on the new engine)
It sounds like maybe the idle speed motor is not functioning, or there is a massive air leak in the air ducting after the MAF. There is a small rubber hose that attaches to the idle speed motor, is that intact? Remove and inspect the idle speed motor if all of the hoses are fine. Once removed, you should be able to lightly twist it and feel the valve swinging back and forth. It can be cleaned out, using intake cleaner, but keep the plugged end up while doing so to keep the cleaner out the motor and it's windings.
Other items that could be causing your problem, massive intake gasket leak, bad throttle sensor. Spark plugs condition? Fuel pressure regulator is leaking and vacuum is pulling raw fuel into the intake?
Are there any codes, check engine light on?
DanR '94 964 387,000 miles (153,000 on the new engine)
Just thought of another thing, a bad MAF. There is a foil flex pipe that runs to the air filter box. In the filter box is a valve that is supposed to draw hot air from the exhaust manifold on cold starts only, once the air warms up the valve slowly closes so it only draws fresh ambient air, sometimes that valve gets stuck in the hot position and will kill a MAF over time. To check your MAF, all you have to do, with ignition off, unplug MAF and start the engine, it may stumble for a few seconds but if it is a bad MAF it will correct itself and run better. This is because the computer takes over with a program to limp home without a MAF. This will cause a check engine light to go on, but reconnecting the MAF will cause the light to turn off but a code will be stored for awhile.
DanR
DanR
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