Gaunty Posted September 16, 2003 Report Share Posted September 16, 2003 Interesting problem this, do old Audi's always suffer electrical problems or what? I thought I'd be okay with this once since it's only done 48000 miles. About three weeks ago my car stared popping its fuse for the fuel pump circuit, the car is a 1993 Audi 80 1.6 SE. The fault only happens when the car is warm after being driven for about 10 miles. Audi have replaced the fuel pump thinking it was that that was faulty but this made no difference whatsoever. I've also had the car electrician come round and he gave up, all the wiring seems fine. The car is going back in to Audi next week, I've told them that I don't want it back until they fix the problem. Especially if they are going to give me a courtesy car Link to comment Share on other sites More sharing options...
Gaunty Posted October 11, 2003 Author Report Share Posted October 11, 2003 Since the weather has cooled a bit it seems to have stopped poping fuses, no one could find what it was now it seems fine Guess I'll just have to sell it before next summer. Link to comment Share on other sites More sharing options...
Sven Posted October 11, 2003 Report Share Posted October 11, 2003 That's weird... Wild guess: could there be a blockage in the fuel line, or a dirty filter? This could force the pump to work harder and eventually pop a fuse... Since it happens at high temperatures I'm thinking in the direction of fuel lines, pressure in the gastank etc. instead of electrical (unless the heat causes condensation somewhere and causes a short...) Otherwise get a stronger fuse! (bar idea ) Link to comment Share on other sites More sharing options...
Gaunty Posted October 13, 2003 Author Report Share Posted October 13, 2003 That's what I thought and the mechanic at Audi, so we had the fuel pump replaced, this didn't have any affect on the problem though and fuses still popped. I took it for a long drive this weekend, about 70 miles, not a problem. The only thing different is the weather conditions. Oh, I tried the larger fuse, a 30amp instead of 15amp, this only made a difference of a few seconds. Link to comment Share on other sites More sharing options...
Sven Posted October 13, 2003 Report Share Posted October 13, 2003 They checked the lines and filters? (don't take the obvious for granted, i've learned that...) Might even be something stupid like a fuel cap. A replacement (with a lock on it or whatever) may give pressure problems when it gets warmer, I've seen very strange reactions on several occasions. On one car the computer went bazurk... that took us some time before we came to the fuel cap!! IMHO it must be something like that, or (less likely) condens somewhere. Can be a tricky problem if it pops at an awkward spot. GF's old car used to close the fuel line at random, and that was hard to find as well (dealer couldn't). After it happened in a motorway tunnel once, she never touched the car again (and gave me a splitting headache about it). Turned out to be a faulty relay... hmmm... could that be...? Link to comment Share on other sites More sharing options...
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