Ok for 3 months I have had a perfectly runnind SR and now all of a sudden it runs like crap. It has a bad misfire and bogs down in every gear around 2500 to 3500 rpm pretty much at the initial onset of boost. I checked for leaks I think the problem is electrical tps maby? I am going nuts trying to figure this out so any help will be appreciated.

 

nobody has any ideas? How do I TEST THE TPS, CAS, ?

 

nobody has any ideas? How do I TEST THE TPS, CAS, ?

 

replace your coilpack

 

check your coilpacks before you replace them. make sure all your plugs are good. start the car with each plug out one at a time to locate which cylinder is craping out. do a compression check to make sure everything inside the motor is good before you start buying all kinds of parts. If everything checks out good and you getting good spark, then maybe look into a new tps. what about your fuel pump, do u have an old stock one or a newer one?

 

I will check the coilpacks it kind of feels like that is the problem the pump is a relativly new walbro 255 and the filter is a new z32 the thought did go through my mind that it could be fuel related.

 

ok I checked the coilpacks and replaced the fuel filter and the problem persists I am guessing it is either the CAS or the TPS assuming that the problem is not internal. Does anybody know how to test the TPS and CAS?