Was is my 87 fj60 bucking, usually at slow speeds

Zack1978

SILVER Star
Joined
Oct 12, 2004
Messages
3,032
 
 
 
Hello,
I have an 87 fj 60 w/ 238,000 miles on it. It has a new cat, carb (act about 1yr old), and a new fuel pump. The engine was also tuned up about 10,000 miles ago. However at slow speeds, like moving in second gear slowly around my development it seems like it bucks. I have also noticed it seeming to buck at other times as well, but it is not as noticable then. If you nail the gas pedal it seems to stop bucking. But if you keep the pedal at a consistent spot, it bucks.Any ideas?

Thanks,
Zack
 
Joined
Feb 10, 2003
Messages
266
Location
Rogue Valley
 
bucking

Hi Zack,

I had similar problems when I de-smogged my rig. I ended up replacing the smog gear, and finding that the EGR valve was stuck open (broken). I didn't have a problem after replacing that. I don't know how to test the EGR but you may be able to search for a thread on it. Others will have more detailed insight here as I'm mechanically challenged.

Good Luck!
 

Zack1978

SILVER Star
Joined
Oct 12, 2004
Messages
3,032
 
 
 
What I wanted to say is "why is" not "was is"

Thanks,
Zack
 
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