MustangWorks.com : Ford Forums - View Single Post - cars still loosing power starting around 3500rpm

crazy5.0 · 03-11-2002, 09:19 PM

I just now did the two tests that PKRWUD said to do and the guage stayed at a steady 18psi for the 10 mins and at wot the vaccum went to zero. The car doesn't miss at all. What happens is once the car warms up it starts loosing power at 3000rpm on up. I always warn my car up for 1-2 mins before driving ,but yesterday I didn't since I drove earlier in the day. Once the temp gauge started moving up it stopped pulling hard past 3000rpm. It does this at wot throttle and partial throttle so I can ruleout 02 sensors since they go to closed loop at wot.

03-11-2002, 09:19 PM	#9
crazy5.0 Registered Member Join Date: Nov 2001 Location: Mission Viejo,Ca Posts: 37	I just now did the two tests that PKRWUD said to do and the guage stayed at a steady 18psi for the 10 mins and at wot the vaccum went to zero. The car doesn't miss at all. What happens is once the car warms up it starts loosing power at 3000rpm on up. I always warn my car up for 1-2 mins before driving ,but yesterday I didn't since I drove earlier in the day. Once the temp gauge started moving up it stopped pulling hard past 3000rpm. It does this at wot throttle and partial throttle so I can ruleout 02 sensors since they go to closed loop at wot. __________________ 89gt,3.27's,Auburn,tremec 3550,Steeda tri-ax,aluminum driveshaft,Asp underdrives,Flowmast er 3 chamber,March ram air,130 amp alternator,Koni yellow struts,Kyb shocks,Pirelli p-6000's,MM's lower control arms and full length subs