I bought this from a seller who refurbs cars and it recently developed a rough idle which turned into low power at higher revs as well.
From a cold start it runs and drives smoothly until it warms up.
At that point it starts idling so rough it shakes the car. Under the hood the motor wobbles a half to three-quarters of an inch.
What has been checked or replaced so far:
(1) Idle air control cleaned
(2) Oxygen sensor output voltage ranging between .3 and .6 volts while idling
(3) New oxygen sensor
(4) Cleaned Bosch dist cap and rotor
(5) New spark plugs
(6) New spark plug wires
(7) No vacuum leaks
(8) Intake manifold gasket checked for leaks
(9) Cleaned coil contacts
(10) Compression in all four cylinders within range
(11) Fuel pressure seems good
Anything I am missing?
Next I may look at replacing coil and fuel injectors.
Thanks!
86 240 Wagon Rough Idle, Low Power
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