I am losing all power in fourth and fifth gear

1989 FORD
68,000 MILES • 2.9L • V6 • 2WD • MANUAL
Avatar
BRAHMBRONCO
  • MEMBER
  • 3 POSTS
As soon as I shift into fourth gear I lose all power in my bronco ii. 1st through third to be normal but 4th seems to stay right around 2000 rpms. I have replaced the fuel filter which seemed to be original and checked the tranny fluid which seem to be normal. The engine sounds find and revs normal but i cannot figure out why fourth gear and fifth do not have any power. I have yet to get it to go over 50 miles and hour.
Jan 13, 2014 at 2:10 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Is there a misfire? Have you checked to see if the catalytic converter is plugging? Is the fuel pressure within the manufacturer's specs?
Jan 13, 2014 at 2:20 AM
Avatar
BRAHMBRONCO
  • MEMBER
  • 3 POSTS
The catalytic converter has been removed. It seems like the engine is receiving fuel but i have yet to check the fuel pump.
Jan 13, 2014 at 2:43 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Check pressure and see if it is within the manufacturer's specs. It may be weak.
Jan 13, 2014 at 8:48 PM
Avatar
BRAHMBRONCO
  • MEMBER
  • 3 POSTS
I have checked the fuel pressure and everything is up to specs. There is no misfire it seems to stay around 50 mph. I thought it might be taking into much air so i checked both the fuel lines and vaccuum lines and everything seems fine. I'm out of ideas!! Thanks for the responses!
Jan 13, 2014 at 9:37 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle