Hey, just as the title states. The tach jumps around wildly, car will stall if the tach hits below idle point while driving. It has gotten steadily worse. First tach went crazy, then car had trouble accelerating, now I can't even start the car without it turning right back off. Also when I was driving it home, noticed that the exhaust changed frequencies often. Sometimes making a spuddering sound, and other times flowing smoothly. Also I noticed that the usual deposites on the inside of my exhaust are no longer there (ie black soot from running a little rich) what could this be? Here is a list of my mods:
Drag 3 turbo kit
Tial 35mm wg
JE 81mm pistons
Eagle rods
RC 550 injectors
AEM FPR
AEM Fuel Rail
Hondata 2b (p28 ecu)
not tuned yet

Your input is greatly appreciated, the sooner the better. Thx

 

ttt

 

sounds like you have a problem in your distributor somewhere.

 

maybe a bad coil also

 

I'm going with ignitor in the distributor...or possibly your alternator (causes jumpy tach). are you throwing a CEL?

 

what was the last thing you did before it started going nuts...

 

check the ignitor ground cable on the top part of the thermostat housing....
when the ground cable is loose or not have a good contact, it'll do what you just described.

stan

 

Its the ignitor. Check the leads to make sure that they are secure first. Then if that doesnt help then just replace..

 

I was driving down the freeway and right at 35000 miles it just started going crazy, I hadn't done anything else except i recently changed the oil.

 

Hey, you were supposed to call me when you came back to town Brian... Btw, I thought Donny was going to tune your hondata?

 

Had a similar problem that ended up being my alternator.

$.02

 

Well I check it out, I'm gonna replace the ignitor today, if that's not it i guess i will try the alternator. Where should i go to have that changed...dealership? And how much for a new one? Thx

BTW cleansi, i was intown for a week waiting on Donny stuff just kept getting held up, no ones fault really and C-speed was supposed to do the tuning but he couldn't get to it before i had to leave. Bummer!

 

Yeah, Cresent lives deep, I drove to his house and it took forever, I can't imagine him driving from bellingham all the way to tacoma...