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-   -   Is there a way to test overvoltage protection relay on 1988 300E? (http://www.peachparts.com/shopforum/tech-help/10567-there-way-test-overvoltage-protection-relay-1988-300e.html)

Steve190E 2.3 11-20-2000 09:42 PM
I have read past posts that a faulty ovp relay can cause the problem I am having with fast idle in neutral and in park, but when the car is in gear it idles normally. Is there a way to test this part? Either with a volt meter or ohmmeter? The fuses are fine but I understand that the fuses will only blow if it is big spike.

Beatle Juice 11-22-2000 07:20 PM
You can check the voltage with a DVM at pin #3 in the diagnostic socket. It should be 2.5 to 5 volts.

Steve190E 2.3 11-22-2000 10:45 PM
With the key on or the with the engine started? I am seeing almost 12volts???

Beatle Juice 11-25-2000 10:44 AM
Key on, engine off.

Blackbenzz 11-23-2002 12:42 PM
Where is the diagnostic socket located?


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