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Isuzu Rodeo fast idle
We have a 1997 Rodeo with the 4.2L V6. It idles too fast. Things we have
done include replacing the "idle motor", which is actually a solenoid. That only cured it for a short time. I have tried lubricating throttle linkage and throttle body, to no avail. Strangely, when the battery was disconnected for an unrelated problem, everything was fine for a few hundred miles, then the idle speed started to creep up again, to the point it idles at about 2200 rpm. This is not a good thing considering we take it up mountain roads occasionally. Even changing down a gear, the machine wants to run away on long down grades, leading to me having to ride the brakes way too much. |
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#2
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Isuzu Rodeo fast idle
GeeBee > wrote:
>We have a 1997 Rodeo with the 4.2L V6. It idles too fast. Things we have >done include replacing the "idle motor", which is actually a solenoid. >That only cured it for a short time. I have tried lubricating throttle >linkage and throttle body, to no avail. Strangely, when the battery was >disconnected for an unrelated problem, everything was fine for a few >hundred miles, then the idle speed started to creep up again, to the >point it idles at about 2200 rpm. This is not a good thing considering >we take it up mountain roads occasionally. Even changing down a gear, >the machine wants to run away on long down grades, leading to me having >to ride the brakes way too much. Checked for vacuum leaks? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
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Isuzu Rodeo fast idle
GeeBee wrote:
> We have a 1997 Rodeo with the 4.2L V6. It idles too fast. Things we have > done include replacing the "idle motor", which is actually a solenoid. > That only cured it for a short time. I have tried lubricating throttle > linkage and throttle body, to no avail. Strangely, when the battery was > disconnected for an unrelated problem, everything was fine for a few > hundred miles, then the idle speed started to creep up again, to the > point it idles at about 2200 rpm. This is not a good thing considering > we take it up mountain roads occasionally. Even changing down a gear, > the machine wants to run away on long down grades, leading to me having > to ride the brakes way too much. Sounds like you have a vacuum leak somewhere. Air AFTER the MAF will cause a high idle. -- Steve W. |
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Isuzu Rodeo fast idle
GeeBee wrote: (1997 Rodeo 4.2L V6) It idles too fast. We replaced the IAC and that cured it for a short time. Lubricating the throttle body parts does not help. When the battery was disconnected for an unrelated problem, everything was fine for a few hundred miles, then the idle speed started to creep up again, to about 2200 rpm. Even changing down a gear, the machine wants to run away on long downgrades, leading to me having to ride the brakes way too much. __________________________________________________ __________ "Steve W." wrote: Sounds like you have a vacuum leak somewhere. Air AFTER the MAF will cause a high idle. __________________________________________________ _________ Yes, the first thing to suspect is a vacuum leak. Check the vacuum lines for cracks and tighten throttle body mounting screws. NOTE: The car previously had the same problem and a new IAC fixed it. It is possible that the new IAC is failing. Good luck. Rodan. |
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