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Rough idle on 91 3.0

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Old 04-21-2008, 08:09 PM
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Rough idle on 91 3.0
The engine is running like crap up to about 2000 rpm and will still hesitate when past that when i hit the gas. i have replaced the plugs, wires, cap, rotor, both belt and the fuel filter. it has 97k miles and just started doin this a couple days ago... anyone got any thoughts that could help me out?
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Old 04-21-2008, 08:13 PM
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check your compression
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Old 04-21-2008, 08:16 PM
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check timing
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Old 04-21-2008, 08:20 PM
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i should add that it onlys does this after it is warmed up when i first start it it doesent do it
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Old 04-21-2008, 08:20 PM
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And if both of those are in check run some Seafoam through it, and some in the gas tank.
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Old 04-21-2008, 08:24 PM
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Originally Posted by 91YotaExcab
i should add that it onlys does this after it is warmed up when i first start it it doesent do it
check tps, then if its okay check timing.
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Old 04-21-2008, 08:28 PM
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how would i "check" the tps what would i be looking for if somehting is wrong with it and where could i find it?
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Old 04-21-2008, 08:44 PM
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Originally Posted by 91YotaExcab
how would i "check" the tps what would i be looking for if somehting is wrong with it and where could i find it?
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
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Old 04-22-2008, 04:53 AM
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your tps and timing arnt going to make it run rough after warming up. You probably have a tight valve. You need a comp test
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