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Won't Idle
CAR: 1987 300e w124 - 184,400 miles
PROBLEM: Engine starts, but won't idle. LOCATION: Austin, TX I can start the car and as long as I keep pumping the accelerator or keep the rev's high (3000-5000rpm's) the engine will run and it will run forever, but as soon as I let up a bit or let it drop to 1000 rpm or less, it will continue to drop to 0 and the engine dies. Not enough time to get the transmission into [D] and actually try driving it. The car is too old to speak codes to me, I'm told. I've done all the affordable stuff I know of: Replaced sparkplugs Checked Spark Compression test Starter fluid test Sound check for fuel pump Disconnected flywheel position sensor Results: --------- Spark check: My friend held one of the sparkplugs to the block and got a good shock: good spark but bad boot, but would this stop the car from running? Compression test: good, range 159psi - 178psi Starter fluid: Had someone spray starter fluid, while I started the car. Engine ran as long as both the fluid was being sprayed and the accelerator pedal was being pushed down. Fuel Pump: Heard the 1 second buzz under the car that someone said signifies the fuel pump is working, supposedly. Flywheel position sensor: I unplugged the sensor from the EZL, the engine didn't even want to turn over until I put it back. Does this eliminate it as a possibility? -------- If it means anything, the car stopped working properly without any previous symptoms and without warning. It went kaput when I tried starting it one night, not while driving. I also thought I heard a small single thud coming from under the hood at the moment the problem started. Thanks for any help, david Last edited by austinite; 10-14-2006 at 05:14 PM. |
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