tACH jumping up and down

460 Views 4 Replies 4 Participants Last post by SALVO82, Jul 2, 2003

SALVO82

Discussion Starter · Jul 2, 2003

my buddy has 1986 jetta 16v and his tach is out of its mind.
VW mech. said it was the computer.
any ideas?
thanks

1 - 5 of 5 Posts

JettATL

· #2 · Jul 2, 2003

Re: tACH jumping up and down (SALVO82)

mine jumped when i was changing my spark plugs and didnt have the plug in right, so maybe something isnt firing right???... sorry if it isnt much help..

Save

brandon002

· #3 · Jul 2, 2003

The wire at the coil could be loose. Or the coil could be faulty.

Save

Harrison.

· #4 · Jul 2, 2003

Re: tACH jumping up and down (SALVO82)

It might be a vaccum leak...mine was surging pretty badly and I replaced one of the boots on the fuel injection system...that seemed to be the problem

Save

SALVO82

Discussion Starter · #5 · Jul 2, 2003

Re: tACH jumping up and down (IntrstlarOvrdrve)

the engine isnt jerking the tach is just out of its mind

Save

1 - 5 of 5 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month