96 Cobra Trouble

[The answers circled]

I have a 96 cobra car that won't idle in cold weather but when It warms up it will hold a rough idle. When I stomp the gas it hesitates and then spits and sputters when I get to 3000 rpm. It has a funny idle but runs fine from 1000 to 3000 rpm. When I hit 3000 it looses all power and struggles to about 4000 rpm then it will jerk u back in your seat. What could the problem be ? Iac? Or miss fire ? I have no clue the code it throws out is number 1 miss fire but I've changed the plugs three times and it dont help. any help would be great! Thanks

 

[BlownFiveLiter]

What codes do you specifically have?

 

[txredgt]

Sounds like it could be a IMRC plates sticking causing it.

 

[Clint426]

Misfire can be caused by several different things. Check the coil to make sure there is spark on cyl. 1 or whichever cyl. you are having issues with. Bad fuel injector could also be the cause. If you have a compression gauge, I would install it and check compression on cyl. 1 and compare with the rest on that bank. Low compression can cause this and maybe due to a burnt valve, worn rings, cracked cyl. head, or bad piston. Lots have to be checked and verified, not just replacing a spark plug.

 

[The answers circled]

I'll start with doing the imrc delete and see if that helps. Then check the coil and injectors. I don't have the stuff for a cylinder check and all that. I'll let you guys know how it goes. Thanks for all the info and help