v6 cougar wont get above 4500rpm - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

scgamer_99 · 10-12-2009, 15:15

ok so i have to replace my power steering pump today and i have never sat in the car and revved it before, so i was going slow and i hit 4500rpm and then it started to stutter and wouldn't go much higher and the stutter started to increase as it increased so i backed it down.... what would cause this? i don't have any codes but the previous owner said he had gotten bank 1 cat failure but he said he fixed it and like i said there aren't any codes stored so what could it be? could it be the cat? maybe he just tricked the computer some how? any info would be much appreciated

**Bert** · 10-12-2009, 15:31

You didn't say what year it is but most of the newer cars have a speed limiter and won't let the enginge rev over a set RPM.

scgamer_99 · 10-12-2009, 15:44

it's a 99

**Bert** · 10-12-2009, 15:47

I'm pretty sure that has it. It acts like a rapid on off surge at the high revs.

scgamer_99 · 10-12-2009, 16:22

strange, lol so would it happen if i was in gear on the high way? or is it just while i am parked? it,s an automatic so its not like i need it to rev really high anyways

**Bert** · 10-12-2009, 16:33

If you put the shift lever in a low gear, it would do the same thing. In drive, it shifts before that point.