Hey all,

I have a 94E320T with about 200k.

The CE light is on.

The symptom is a sinusoidal cold idle with about a 2 sec period. The idle bounces between 500 and 1000 rpm when the car is cold. This happens when it is in gear and not in gear. The symptom clears up and idles normally when the climate control decides it is time to run the heater fan.

Additional symptom, every great once in awhile, while driving normally the engine will lose power. If you step on the accel pedal power completely disappears like the fuel is being cut. When you release your foot from the pedal there is an extremely rapid idle fluctuation between 500 and 1000 rpm. Turning the car off and back on cures this symptom.

Car has diagnostic codes...

Emissions- 5,26
Pin 8- None
Pin14- 2,5,11

I am thinking perhaps a faulty throttle actuator? Could a bad OVP relay cause this (the fuse is OK?)

Thanks in advance for all your wisdom.

__________________
Kyle Fitzpatrick
Materials Engineer

1969 300SEL 6.3
1992 300E
1994 E320 Touring