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1999 Isuzu Rodeo Question: It will idle a bit rough but will not run over 5 to 10 mph.

 

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DCH, Cameron, SC, April 05, 2014, 07:38
 Rookie

It started running rough and now won't run more than 5-10 mph. It seems to have a dead spot in the throttle and have changed the TPS sensor even though ALL sensors are reading good. It cranks and idles a little rough and it seems to only get gas at idle and at full throttle. Any suggestions?

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  • Answer #1

    Action702 April 05, 2014, 07:59
     Journeyman

    Do you have check engine light??

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    DCH, April 05, 2014, 08:44
     Rookie

    No check engine light and ALL sensor read good! I have heard some talk of the "Power Reduction" light or button cause similiar problems....but, I really don't know what to try next.

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    Action702, April 05, 2014, 08:49
     Journeyman

    Have a mechanic to unbolt the cat converter see if it makes a difference
    Something is clogged on your exhaust system

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    DCH, April 05, 2014, 09:08
     Rookie

    Have already done that. The converter is not clogged.

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    Action702, April 05, 2014, 09:10
     Journeyman

    Okay do a compression test each cylinder then

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    DCH, April 05, 2014, 09:40
     Rookie

    Already tested, all cylinders good

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    Action702, April 05, 2014, 09:41
     Journeyman

    What's the psi?

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    DCH, April 05, 2014, 09:52
     Rookie

    Not sure. My mechanic did it last week....said all where good. Only has 112,000 miles on it. Enigine was in great shape when I purchased it a few months ago. My mechanic checked it out before I purchased it. So far, we have ruled out, blown gaskets, converter, TPS sensor, cracked block....etc.

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    Action702, April 05, 2014, 10:13
     Journeyman

    What about do a fuel pressure test?

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    DCH, April 05, 2014, 10:33
     Rookie

    Dropped tank, blew out the fuel lines, replace fuel filters and verified fuel pump pressure. Lmao....been there....done that. I'm at an impasse.

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