My Tach Bounces like crazy. I Don't know what the real problem is. It started when my plug wires were jumping and missing above 3500rpm. replace those and put in a new Accel ignition module and Accel super coil. The distributor and that stuff looks fine. The coil is NOT on the distributor. It is a separate HEI module. Thanks in advance for the info and suggestions on what to do to fix it.

 

have you checked the tach output with a meter to see if its bouncing at that end or could be a bad groung to the tach

 

I had the same problem with mine... I didnt replace any of the stock ignition parts. All I did was put new plug wires in and it stopped bouncing all over the place. The car also had a surge but once the plug wires were isntalled it ran perfect. Maybe your new wires are bad...I doubt it, but it wouldnt hurt to double check

Jason

 

Degraded rotor? I would assume you would feel some misses though.

 

im having the same problem, i was on the freeway the other night and took it to about 4K RPMs in third gear and the tach started bouncing all over the place. i couldnt really feel any loss of power because the bouncing stops after i give it alittle gas, it only bounces when i give it just enough gas to keep it at a certain RPM. It also misses alittle at lower rpms and i can feel it. One of my wires sits pretty close to my headers and has a big crack in it and they are also about 2 years old so i think im going to chance those and the spark plugs. i already have a set of Taylor Spiro Pro wires sitting in the garage and maybe. Im also running some Bosch platnums right now which from doing research on the boards i found they are suppose to suck, so ill probably try out those new Accel shorty spark plugs. Ill also check out the cap and rotor (only about a year old) and see if there is anything wrong with those, ill keep you guys informed.