• Subscribe to a Magazine
Item Posts    Sort Order

'95 Cobra high RPM problem

 
firehorse5_0
User
Posts: 56
Joined: 03/10
Posted: 03/16/10 01:30 PM

I have a '95 Cobra. It has 120k miles, decent compression, B303 cam. No other mods to motor. When it is hot out, above 80f the motor will stumble above 4500 RPM when it gets good and warmed up. Sometimes it will not be able to reach redline. This does not happen when it is cold out. It has new valve springs for the B303. Original 5.0. any sugestions?  

Post Reply
Michael Johnson
Enthusiast
Posts: 397
Joined: 12/07
Posted: 03/17/10 06:33 AM

Hmm, that's a head scratcher. Has the problem triggered the check engine light?  
Michael Johnson
Associate Editor
5.0 Mustang and Super Fords

Post Reply
firehorse5_0
User
Posts: 56
Joined: 03/10
Posted: 03/17/10 07:05 AM

No check engine light.  

Post Reply
94cobra69ss396
New User
Posts: 46
Joined: 05/09
Posted: 03/17/10 11:08 AM

So when the engine is cold it rev's to redline fine?  
1994 Cobra - 11.698 @ 118.45 (Finally in the 11's)
1969 Chevelle SS396 - 10.993 @ 121.63 / 10.18 @ 130.76 on a 150 shot.

Post Reply