20 Most Recent 2002 Audi A4 - Page 2 Questions & Answers

Sometimes the issue is with the mechanical vacuum pump off to the side of the ABS/ESP module. It looks like a round silver canister. This issue is all over Google with many possibilities but the one I copied is most common.

Test new compressor. It may also be faulty, new or not.

Either a fuse problem or could be a twist in the electrical cable in the door joint . Sometimes chafes the outer core away and causes shorts in stuff like this .

I only have the 2000 diagrams, and they do not have memory. Does your model save settings for different keys? If your system is the same as the 2000 diagram below, I would replace the switch. If you have a memory module, I would replace the memory module.

From the test you made you definitely have a fuel delivery problem. You need to check, in that order, Fuel pump, fuel lines for blockage, injector pulse the the injectors themselves. Plugging the car to VCDS could easily identify fuel pump and injector problems.

Oil into coolant is almost always cylinder head gasket problem. Sometimes head cracked, Check if head is "tourqued" correctly. If it is remove and do a top overhaul.

Dear Frances, The way you have described the symptoms, you have a stuck thermostat or a blown head gasket. You should not even drive the car to the garage to be checked, it should be towed before the engine self-destructs. Sorry. God bless your efforts.

wax?

At this point you need the dealer to scan the system and see if you lost programming.

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