Quote:
Originally Posted by Cal3000
Update:
Changing the spark plugs alleviated some of the issue. The plug gap was worn out. It would hesitate at anything above 50% throttle. Now I'm having the issue at the higher RPM range, always at 6.5k rpm, the car hesitates and wont go. I've cleaned the MAF sensor which I haven't cleaned ever (lol) and got the same results. I have a vid below.
The 2nd vid hesitates at 6k which it doesn't do often. My tuner said it wasn't the MAP sensor. I haven't swapped to test as yet though.
So the list of possible issues:
MAP sensor
O2 Sensor
Vac Leak?
Coil Packs?
What other possibility?
Other note is my engine has 150k miles on it. The issue did start until 145k miles. |
Fuel filter/pump? I mentioned this before. No one commented unless I missed it.
Edit: My dad’s GMC 2500 cut out power and went to limp mode. I sounded like the turbo was bypassed. The truck would not go faster than 45mph or rev as high. He changed a clogged filter, and it immediately fixed the issue.
I think you have to ask yourself what could have changed? Bad fuel, low fuel pressure, bad afr, bad spark or bad compression. Bad afr could be a header leak, a clogged cat, a boost leak, a bad o2 sensor or something but I can’t imagine you would see any of these problems with no CEL.