Question about Isuzu Trooper

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Had a tuneup done on my isuzu trooper

Took my trooper in because it was idealing higher than normal. Useually ideals below one,started idealing around one and half. Was told that it needed a tune up so I had one done. Had the plugs and air filter changed, while in the machinic changed the vaccum lines. Now the truck will not ideal below two and a half. From a dead stop the trooper will go up to fifteen miles an hour with out touching the gas pedeal and my transmission pops when you go from drive back to park. It has never done this before. Took it back because the man who work on the truck said he might have gotten a vaccum line hooked up wrong. So he put a bigger vaccum line on the truck. and now it is worse than before he did anything.

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  • Isuzu Master
  • 21,873 Answers

Sounds like you need a new mechanic.
The idle speed is going up because extra air is entering the intake much like opening the throttle plate. You might be able to plug all of the line fittings to get the idle speed back down, but the hoses would still need to be connected correctly.

Posted on Apr 27, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 9 Answers

SOURCE: Rough Ideal on 2004 Ford Explorer

Open hood and listen for vacuum leak sound. pcv hose is most likley cause.

Posted on Sep 04, 2008

motor1258
  • 6674 Answers

SOURCE: high ideal

No, it should be checked as to why it is so high. It's hard on that new tarnsmission as well as maybe brakes. If it happened immediately after transmission work, I'd go see them first and see if they check it for you, otherwise have it checked out by a trusted mechanic.

Posted on Dec 13, 2008

USfalcon
  • 175 Answers

SOURCE: 1998 Chevy s10 4 cylinder running rough

1- check there is spark come from spark wires
2- check the fire timing by looking for every wire in the right place
3- check there is injector signl
4- check for any vacuom leak
5- try to clean the MAF by brake and parts cleaner
6- try to reset all the code and see what will come after that

Posted on Mar 14, 2009

carsandcomps
  • 722 Answers

SOURCE: Hello Need help on a 2004 Ford Explorer. Having

creechjm55,

You have misplaced some of the wires on the distributor. Also make sure that the coil wire that runs from the center of the distributor to the coil pack (if installed, instead of coil packs) is connected securely. Sometimes new wires are hard to get to snap on. You should hear and/or feel the wire clip into place.

If you have a distibutor, get a repair manual and find the firing order for the distributor versus the plugs. Find the number one on the engine and the distributor and make sure it is correctly linked. Do this for the other wires. Chances are you only have two of them crossed.

For future reference, when you change plug wires, and plugs, do them each one by one so that this does not happen. Don't worry though, I've done it many times.

I am positive this is the issue, as I have done this and as soon as I read rough idle, and missing, this came to mind immediatly. and considering you just changed the wires, I'm sure that's the problem.

Please let me know if you need further assistance if this doesn't correct the problem, or if the problem has been solved already.

Thank you,

carsandcomps

Posted on Mar 26, 2010

  • 5467 Answers

SOURCE: Hello Need help on a 2004 Ford Explorer. Having

The computer should have coded a problem. If it did not code it is usually a vacuum or compression problem. With the motor running use a spray bottle of water and go along the seams of the intake manifold, Brake booster, EGR valve, and anything that has a vacuum line and spray them.

If you have a vacuum leak the water will be drawn in and the idle will be affected. That would be the gasket or part to replace. Sometimes on 4.6 SOHC engines the area under the Airhorn clogs the intake ports for the EGR. The groove under the gasket needs a cleaning.

Autozone and Oreillys will scan your Ford free. There may be a problem with the diagnostic system in your vehicle and at least you would be informed.

Posted on May 16, 2010

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