Question about 1992 Isuzu Trooper
I have a vw passat 1999 1.8T my battery went flat so I fully charge it but now my problem is when I start the car it's misfiring bought new plugs but still doing it.If i let go off the gas pedal it stalls it doesnt idle even if I rev it.Iv'e been using it fine before the battery went flat because I didn't start it for 2 weeks but now it doesn't idle what's causing the problem maybe?
I suspect the throttle body has lost its basic settings for some reason,ive only known of that happening a few times tho,but that is the symptoms of a throotle unit,plug in a scanner check the codes and reset the throttle body in basic settings
Posted on Feb 19, 2009
SOURCE: vw passat 1.8t battery problem?
Either your battery has just given up the ghost,........ Is it the original, and now 10 yrs old ?
Or your Alternator is not charging enough, to replenish what is used.
Have battery tested first, if OK, then the alternator belt tension, and alternator for correct output charging rate.
If all these shows no faults, your starter is then suspect.
Good Luck !
A FixYa would be nice thanks !....John.
Posted on Feb 23, 2009
It "might" be your throttle position sensor, look for some electronic's going into your or near your throttle body and clean them with disc brake cleaner, something that won't leave a film on it.
This was the problem with my chevy, I know it not the same car but it's worth a try, cheaper that replacing it.
Posted on May 06, 2009
Check the spark plug for that cylinder, the wire and coil. Also check for any vacuum leaks around that cylinder. See my "How To" on finding a vacuum leak.
Posted on Mar 13, 2010
Coils and plugs are not the only things that can cause misfires. Misfires can be caused by vacuum leaks, low compression, faulty fuel injectors, clogged EGR ports (on vehicles with individual ports for each cylinder), blown head gaskets, burned valves...you can spend a LOT of money on parts by just going in and replacing things without diagnosing WHY the cylinder is misfiring.
Posted on Feb 27, 2011
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