Question about Volkswagen Eurovan
Starts first time,but when temp gauge gets to 80 degrees it starts to misfire,has a flat spot,and smokes
Posted by Anonymous on
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Posted on Jan 02, 2017
that souns like an airflow meter problem,you will need to sort the misfire out first as this will cause all sorts of fuelling issues,the secondary air flow is from the cold start pump but will only effect the emissions when cold.effiency below threshold could be the cat or rear lambda but pointless doing any further diagnostics untill the misfire has gone,check the air mass in measuring blocks or advanced measuring blocks this should give you actual and specified limits if its vag.com(vcds)
Posted on Jan 02, 2009
I just came up with that exact issue in my 2003 with 98K police crown vic. And the last time I had this issue in a 2001 police Crown vic it was the crank shaft position sensor. A $20 part and about 30 mins to put it in. located near the bottom of the engine. I had to un bolt the A/C compressor and push it out of the way a few inches to get to the sensor. If you have about 100K mile on it and its an idled heavy police car, this sensor should be changed out anyway. It can leave you on the road dead and some dealers have a hard time find out whats wrong as the OBD 2 does not see it as a problem when it goes bad or becomes touchy as I think mine is.
Posted on Jan 12, 2009
SOURCE: 2001 Grand Caravan #4 Misfiring
if it's only one cylinder... bad spark plug wire or spark plug would be suspect.... swap the plug wires from another cyclinder... at the coil pack and plug and see if the misfire has "moved"
Posted on Jan 20, 2009
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