I am losing all power in fourth and fifth gear

1989 FORD
68,000 MILES • 2.9L • V6 • 2WD • MANUAL
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BRAHMBRONCO
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  • 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 10:10 AM
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JACOBANDNICKOLAS
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  • 110,175 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 10:20 AM
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BRAHMBRONCO
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  • 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 10:43 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Check pressure and see if it is within the manufacturer's specs. It may be weak.
Jan 14, 2014 at 4:48 AM
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BRAHMBRONCO
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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 14, 2014 at 5:37 AM