All of a sudden came out and the car will not crank. Dash lights come on, checked the engine, battery and starter and all seem fine.
SOURCE: engine overheating audi 4.2 a8 1999
I would have the cooling fan checked, and have the thermostat changed. An overheated thermostat (overheating caused by something else) will cause problems in the future.
SOURCE: 1995 AUDI 90 CS - Hard to start... spark & fuel OK
Have you tried replacing the starter? I know starters can go bad if the car is not started or run for a long time.
I am getting the same car, with the same issue.. it sat for 2 yrs and won't start.
My mechanic told me it is probably a starter.
SOURCE: Audi A4 starting problem
your have a bad starter relay look at owner manual for location and replace
SOURCE: audi 100cs does not crank and does not start
If you have acess to a mutimeter check the batery voltage. Should be around 12.5 volts. also check batery voltage when trying to crank engine. Should drop to 9volts while cranking. If it dose but engine dose not turn over you know power is still going to the starter motor but its just not turning. This could be a bad conection in the starter some where.if voltage dose not drop you know power is not reaching the starter motor. this could be a bad earth to the starter from the baterty somewhere. But also listen for clunking or clicking noices while cranking which would surgest the starter is trying to turn. try this before doing any other diagnostics.hope this helps
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