The car has a miss under load, I took it to a shop and they said that the intake was cracked and is a common problem. So I replaced the intake w/the frpp intake, when i pulled the intake off it had the sympthoms of a cracked intake, coolant on 6,7 & 8 spark plugs on the top of them. Buttoned it up and still has the same miss/bog.It only happens above 1/4 throttle. There hasn't been any codes present even before I replaced the intake. Under a free rev the car sounds fine only after I'm driving does it have a bog/miss. Now I'm leaning towards a bad TPS. Please help!!!!!!!!!

Maybe the coolant caused the plugs or wires to go bad.

 

Sorry I should have stated that I replaced the plugs also.

 

Its possible the O2's could have got knocked out from the antifreeze.

 

I miss under load can also be caused from a breakdown in the secondary ign. side. replace coil(s) check for proper voltage to coil, you did not mention if you replaced plug wires.

 

The car is COP should I replace the boots? 2001 GT.

 

ttt

 

is it a miss or bogg? two different things. if it is a bog, check fuel pressure under load. a miss still can be a bad cop,have access to a scanner? look at cyl missfire counts

 

No access to a scanner yet. It is hard to tell if it is a miss or a bog, But I would have to say miss. If I apply more than like 1/4 throttle it sometimes ''bucks''.

 

that sounds like a miss to me,you probably have a cop going out(low output). finding which one without a scanner would be hard. one thing you can check is make sure they are getting battery voltage

 

Ill get a scanner on monday, What shoukld I be looking for?

 

depending on what scanner,look for cyl missfire counts. some scanners it's under datastream some others under obd2,special test. just look under all options avail. if one (or more) cyl are missfiring it will be quite obvious looking at the counts