1993 Volkswagen EuroVan Q&A
1993 Volkswagen EuroVan Question: wont start when warmed up, why?
This eurovan has automatic trans. all systems seem to work ok. when first started. starts easy, idles fast for couple minutes, the drives normal. after driving for least 20 min, it may or may not stall when stopped, at this point it will turn over well, but not restart. been towed twice, starts easy after sitting for a couple hours or overnight. no check eng. lite, dont think it has one. Done major tune up, new battery, o2 sensor and catalytic converter. where should I be looking for problem? Im starting to think the ecu or idle control valve. - Bob s j
An idle valve will not keep a car from starting. It controls air, not fuel or spark. ECU is very rare to cause an intermittent no start. You need to see if your no start is from lack of spark or fuel. Do you know how to do this? Do you have a test light? I would check for power on the coil with key on and then cranking. When not cranking, both sides of the primary side of the coil should be hot. when cranking, one side should stay hot and the other should pulse or blink. If both sides stay "hot" and don't blink, I would suspect a bad Hall sensor in the distributor...see http://www.youtube.com/watch?v=jJmqdhhduVc - tramies