1990 audi 80 fuel pump relay ????
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1990 audi 80 fuel pump relay ????
I placed a fuse in the 215(fuel pump relay) fuse intregal for 4 seconds as i was told to do to check for problem codes but the cel light does not illuminate. also having cold start problems in the a.m. could this possibly be my fuel pump relay not working? Thanks....
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Joined: Jan 2002
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From: Central Idaho
If the relay is shot you won't get any power to the pump. Your cold start issue could be the cold start injector which uses the 2 pin white Bosch water temp sensor in the coolant hardline to measure coolant temp to determine if enrichment is needed. The injector itself rarely fails, the sensor does after a decade+.
If the relay has never been replaced it could be flaky.
I've already been through this with my 88, both the relay and sensor.
If the relay has never been replaced it could be flaky.
I've already been through this with my 88, both the relay and sensor.
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Thanks for the info. I can hear the fuel pump when i turn the key so i assume that its working. Once i start it in the morning it ususally starts up on the first try the rest of the day if the temp outside is not too cold. Oh yes my idle is erratic also. jumps from 1000 to 800/900 rpms when idling. would this be related to the coolant temp sensor also? Thanks!!
Thread Starter
AudiWorld Newcomer
Joined: Aug 2011
Posts: 7
Likes: 0
If the relay is shot you won't get any power to the pump. Your cold start issue could be the cold start injector which uses the 2 pin white Bosch water temp sensor in the coolant hardline to measure coolant temp to determine if enrichment is needed. The injector itself rarely fails, the sensor does after a decade+.
If the relay has never been replaced it could be flaky.
I've already been through this with my 88, both the relay and sensor.
If the relay has never been replaced it could be flaky.
I've already been through this with my 88, both the relay and sensor.
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