Help! 1994 GMC Suburban

avsfan76 · 10-14-2005, 09:47 PM

My Suburban all of the sudden starting running very rough. I got it home and put it in park and the roughness went away. I revved the engine while it was in park and it seemed normal. As soon as I put it back in gear it starting running rough again and seems lose about half it's power when I try to accelerarte while it is in gear. Anybody have any ideas?

timwalsh · 12-12-2005, 10:12 AM

I have a 93 that overnight started running rough while driving and had a hard time going up hills but standing still it was fine. I replaced the fuel filter and everything went back to normal...runs great.

Good Luck

Quote:

Originally Posted by avsfan76

My Suburban all of the sudden starting running very rough. I got it home and put it in park and the roughness went away. I revved the engine while it was in park and it seemed normal. As soon as I put it back in gear it starting running rough again and seems lose about half it's power when I try to accelerarte while it is in gear. Anybody have any ideas?

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