I have a problem with my slowmaro that I just cant figure out. After about 20 min. of driver the car starts to misfire and wants to cut out. If I step on the gas it cut off and starts jump around the rpms. Sprak plug, wires, coil, and module are new. Any ideas what it could be?

 

Sounds like Opti since the PCM uses the feedback signal from it to drive the output to the tach.

 

thanks, i was thinking it was the opti. 217K is enough time of a replacement

 

could be the fuel pump...do a quick pressure check on it

 

217,000 miles on one opti. Holy hole in the donut Batman, that must be some kind of record. I don't think your fuel pump would make the rpms jump higher than actual. That's why I think its the opti.

 

i WAS the fuel pump. Got 2 psi on start up and never got above 25 psi.