1999 Izuzu Trooper 3.5 automatic 4 wheel drive. problem: I have a vibratingattling noise that seems to be located in the engine compartment. The noise is loudest when I first start the engine (cold engine). The noise is not present when the engine is in park and rpm is at approximate 1000. When I put the truck into gear and the rpms drop to approximately 800 the noise is very evident. If I keep my foot on the brake and increase the rpm the noise abates. As I drive and the engine warms up the noise lessens to almost unnoticeable. the noise seems th be coming from the upper right front of the engine near the belt tensioner pulley. Visiual inspection does not reveal any loose parts. I had the serpentine belt replaced approximately 5000 miles ago. ??? thanks david

SOURCE: How do you replace turn signal bulb on 2001 Izuzu Trooper?

NOT SURE IF IT IS TRUE ON THIS KIND OF VEHICLE, BUT USUALLY WHEN CHANGING A BULB YOU NEED TO GO UNDER THE HOOD ON WHATEVER SIDE YOU ARE CHANGING...AND THERE WILL BE A KIND OF PLUG INTO THE BACK OF THE ACTUAL LIGHT FIXTURE, IF YOU GIVE IT LIKE A QUARTER TURN IT WILL PULL OUT YOU THEN CHANGE THE BULB AND PROCEED WITH PLUGGING BACK IN. MAYBE THIS WILL HELP!

SOURCE: 1989 IZUZU TOOPER NOT GETTING ANY FIRE

Need to have the Coil packs and the Ignition Control Module tested at someplace like auto-zone. I'm willing to bet thats your problem.

SOURCE: 98 Isuzu Trooper stalls on cold start, idle issues..

I had the same issue on my 99 Trooper.

It would usually start when completely cold, but idle around 2k RPM.
It would drive fine. But if I shut it down, ran into a store, and came back out, it would start but immediately idle.
Had to ride the gas a little to get it into gear.
The Check Engine light has been going on and off for 6 months or so.

I took this to my local trusted repair shop (no Isuzu dealers within 200 miles).
The diagnosed the light, and found that the Intake Gaskets were bad or leaking.
The idling problem was related to the car not being able to control the amount of air coming in.

They replaced the Intake gaskets by the next day, and I haven't had a problem since. And no more check engine light, which has been on half a year.

Here's some details from my bill:
(1) Intake Gasket set $107.95
Misc materials $21.00
2.1 hours of Labor

The total cost to me was $345.00, and I definately don't feel gipped.

SOURCE: 91 trooper water pump replacement

If your car is over-heating, chances are it's the water pump or thermostat. These two parts should be changed out at the same time because if your pump is old enough to go out then the thermostat is not far behind.





Step1 First you'll need to pull out the old water pump. Look in your vehicles owners manual and find the diagram showing what all that stuff under your hood is. locate the water pump (usually underneath alternator running on the same belt) you'll need to take this belt (serpentine or other) off to start pulling the old pump. There should be a tension bar or arm that easily loosens the belt with the right size socket. Step2 Once you've gotten the belt off you can begin to remove the old pump. There should be only a few large bolts holding it in. After you've gotten the old pump out, place the silicone sealer on the new water pump 9around the edges where it meets the gasket. Then apply the sealer to the gasket as well, just use your fingers to spread it on. Now place the new pump with gasket, where the old one was, replace the bolts and be sure not to crank down too tight on the bolts or you might crack the gasket and your pump wont seal. Step3 Now that you've gotten the new pump installed, you'll want to replace the thermostat. the thermostat could be located near the water pump or on the other side of the engine. So once again, refer to the vehicles owners manual and find where the thermostat is. You might need to remove some hoses and/or lines to get to the thermostat, so just be careful not to break/bend/crack or damage anything (the older the vehicle, the better chance of something breaking) Pull the old thermostat and replace it with the new and you're all done. Don't forget to put everything (hoses, lines, nuts'n bolts) back where they came from and off you go!

SOURCE: we want to change the serpentine belt on 01 isuzu trooper

# 3...there is the tensioner.