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Discussion Starter · #1 ·
i have a 92 ext. cab v6 that i cant get straight. sometimes it runs fine but other times it runs like crap it seems like it only does it at 2000-2500 rpms its like its surgeing going down the road, it also mist real bad when acel. hard. i have already changed the fuel pump,fuel filter,rotar,dis. cap,plug wires. i dont believe the timing belt has been changed, it has 200k miles. any help on this one
 

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Languishing in Virginia
1994 XtraCab 4x4 P/U
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2,026 Posts
Could be:

Fuel pressure regulator
Vacuum leak
Bad distributor
Bad TPS
Bad VAFM

Doubtful the O2 sensor could cause your issues.
 
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