this has been happening for a good while now...every morning after i start the car, it idles fine but wen i drive it the rpm needle starts jumping around like crazy. Once i decelerate it goes down normally but wen im on the gas it jumps every single time and now i cant tell wen im going to hit redline...please help guys im clueless...and after a long while driving the car it is fine but after 3k it goes crazy again..it flickers even at a constant speed...

 

sounds like and ignition problem

is the tach just jumping or is your motor actually bogging and skipping around?

 

the tach is just jumping motor runs great

 

the film on the back is probably fucked up, or there is a short in your wiring, if you have a friend with a DC ask them to borrow their cluster to see if it still does the same in your car

 

imma try to hook up a tach and see wat happens

 

I had the problem before, and it was the ignition module. Many members actually...

 

ignition module? is that in the dizzy? the little box on the side?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98B18C1 &raquo;</TD></TR><TR><TD CLASS="quote">ignition module? is that in the dizzy? the little box on the side?</TD></TR></TABLE>

Yes, inside the dizzy, it's rectangular or square depending on what year/model dizzy you have.

 

it could be a bad ground too though...

 

where would the ground be located at?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98B18C1 &raquo;</TD></TR><TR><TD CLASS="quote">where would the ground be located at?</TD></TR></TABLE>

I would try to locate a spare ignitor (OEM name - Ignition Module) and swap it out and see if that fixes your problem.

Next I would use dielectric grease on all the connections inside the dizzy.

Finding a loose ground can be painful.

 

but he says the engine runs fine. maybe it is a problem with the tach.