96 cobra purchased two months ago. We figured out quickly it had a issue
MAIN ISSUE- car breaks up at 4K bad.
-Feels sounds like a misfire.
-No power at 4K (falls on its face)
-Crack throttle quick soon as it gets to 4K it breaks up.
-roll into throttle easy you can get it past 4K without it breaking up. That’s it tho any quick movement past 4K it does it!
THINGS WE DID:
1-Imrc delete (verified that is all 100%)
2-Plugs/wires/coils
3-throttle position sensor
4-fuel pump
5-all new gaskets (intake,valve ect)
6- new ecu (old had a chip and was just a mess)
7- all new O2 sensors
8- injectors cleaned and flow tested.. 100% ok
Car was at a shop to try and diagnose it but came up short. I think he was stumped as well (he is a known mustang performance guy. He can make cars fast but I think he wasn’t the best diag guy)
It got to point it kinda was a guessing game on my buddy’s wallet. Pulled car out.
Obviously something is going on and we are at the end of our rope. Will be changing crank sensor as piece of mind since this is the original one.
We do notice one bank is running richer then other. Some data was taken and I will tell him to chime in and give info but we are at a loss.
Only one here have good knowledge of this issue that can guide us on something we could be missing?? Any input is greatly appreciated!!!
MAIN ISSUE- car breaks up at 4K bad.
-Feels sounds like a misfire.
-No power at 4K (falls on its face)
-Crack throttle quick soon as it gets to 4K it breaks up.
-roll into throttle easy you can get it past 4K without it breaking up. That’s it tho any quick movement past 4K it does it!
THINGS WE DID:
1-Imrc delete (verified that is all 100%)
2-Plugs/wires/coils
3-throttle position sensor
4-fuel pump
5-all new gaskets (intake,valve ect)
6- new ecu (old had a chip and was just a mess)
7- all new O2 sensors
8- injectors cleaned and flow tested.. 100% ok
Car was at a shop to try and diagnose it but came up short. I think he was stumped as well (he is a known mustang performance guy. He can make cars fast but I think he wasn’t the best diag guy)
It got to point it kinda was a guessing game on my buddy’s wallet. Pulled car out.
Obviously something is going on and we are at the end of our rope. Will be changing crank sensor as piece of mind since this is the original one.
We do notice one bank is running richer then other. Some data was taken and I will tell him to chime in and give info but we are at a loss.
Only one here have good knowledge of this issue that can guide us on something we could be missing?? Any input is greatly appreciated!!!