Help me figure this out... Car wouldn't start for 2 days, and now started today?
04-20-2006, 06:40 AM
#1
Help me figure this out... Car wouldn't start for 2 days, and now started today?
Would crank and crank and crank but just wouldn't catch. Today she fired right up?.
I don't want to get stranded again... Possible culprit(s)? Would fuel filter be a good place to check?
I don't want to get stranded again... Possible culprit(s)? Would fuel filter be a good place to check?
04-20-2006, 06:59 AM
#3
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When it did start did it crank a little faster than when it didn't start?
My CQ did the same thing. It seemed random. Sometimes it would fire right up, sometimes it would crank and crank then finally start, and other times it refused to start no matter how much I cranked. The starter finally died and when I replaced it the problem was gone. The ECU will not fire the ignition unless the minimum cranking speed is achieved. If you starter is begining to wear out it will crank and crank and not turn the engine fast enough for the ECU to fire the ignition.
I'm glad the starter died because I might have spent even more money and time trying to find the problem. I replaced the fuel pump and tuned the engine (timing, ISV, etc...) an nothing helped. I had the coil tested and I knew it was good, but there was no spark because the ECU was not sending a spark due to the slow cranking speed. The cranking didn't seem too slow, but the ECU didn't like it so I got no spark.
My CQ did the same thing. It seemed random. Sometimes it would fire right up, sometimes it would crank and crank then finally start, and other times it refused to start no matter how much I cranked. The starter finally died and when I replaced it the problem was gone. The ECU will not fire the ignition unless the minimum cranking speed is achieved. If you starter is begining to wear out it will crank and crank and not turn the engine fast enough for the ECU to fire the ignition.
I'm glad the starter died because I might have spent even more money and time trying to find the problem. I replaced the fuel pump and tuned the engine (timing, ISV, etc...) an nothing helped. I had the coil tested and I knew it was good, but there was no spark because the ECU was not sending a spark due to the slow cranking speed. The cranking didn't seem too slow, but the ECU didn't like it so I got no spark.
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04-20-2006, 10:22 AM
#8
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yup
nature of wires and sensors. Mine happened like that. I would crank, crank crank. Nothing. I sit and think. Try again. fires right up. A couple days goes by, all is well in Audi land. Then bam problem again. Then it eventually failed. Just the sensor. Thats it. removed it, replaced it, All is well. I posted about it here, everyone said, fuel pump, spark, wires, etc. I found out from an outside sourse that it could be this. Its an easy part to change. You can get em for cheap as well. Give it a shot. and from what I understood from my source, a very typical problem with the B4's.