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Isuzu Trooper



  • paisanpaisan Posts: 21,181
    Are you sure the '97 was heavier? I know for a given model the 4x4 version will be about 200lbs heavier but I think the newer troopers have more sound deadening material than the older ones which is quite dense material. I know in '98 the Rodeo jumped almost 1000lbs when it went from the '97 model.

    Also @ 75mph with the stock tires I turn about 2700rpms on the '00 Trooper. With the bigger tires I turn about 2400rpms at 75mph.

  • If you have a Lowe's or Home Depot nearby go to the windows area where they sell screen for repairing window screens and screen doors. The spline is the rubber that wedges the screen into the frame. It can be purchased in different thicknesses and lengths. i bought like 10 feet of it and cut it to length for each pillar. If you buy the right thickness it will wedge itself right in the crevase we've been talking about. At the very base of the crevase the gap is slightly larger so i wrapped the spline with a little duck tape and stuffed it under. If you do it right it will not be visible at all. the other alternative that I have heard some people talk about is to fill the space with silicone, but I thought that would be a little to permanent. If you have any other questions let me know!
  • paisanpaisan Posts: 21,181
    If anyone does this, can you shoot some pics and do a write-up for the how-to section of ? Thanks.


  • Keepontrooping,
    Yes I do have a bug shield. I will try the fix you mentioned. If you hav not seen my post on the maintance/repair board you should! I am having my transfer case replaced under warranty because of the 9 wire plug going into it coming out under normal use. There is going to be a TSB from Isuzu soon to fix this. The district Isuzu Rep said there have already been 5 cases of this in his area this year.
  • Got the Trooper back from the mechanic today.

    "Found front output seal leaking for Transfer Case
    for front drive shaft"

    So they R and R'd the seal:

    Parts: $22.74
    Labor: $174.72

    Fortunately enough oil stayed in the transfer case and no damage was done. I picked up the car and pressure washed the underside. I will see how it looks tomorrow.

    Thanks Mike, and beware Trooper owners! This is just one of those unusual things that goes bad.

    This and a valve cover gasket leak in 5 years and 98k miles. I guess that is ok.
  • The Vehicle Dependability Index (VDI) measures durability of 5 year old models across 137 potential problem areas.

    The 2001 results are out (for 1997 vehicles).

    In the Midsize SUV category Isuzu Trooper finished second only to Toyota 4Runner. Mercury Mountaineer was third.
  • cwmosercwmoser Posts: 227
    I can attest to the reliability of the Trooper and versus the 4Runner which you said was #1 in reliability, our purchase price was much less and we have much a more more roomy interior :-)
  • Thanks for bringing this up. Since the post on the 4th, my '00 just started making the "chatter" from the right front mesh in the vent cowling - probably the outer edge by lightly pushing on it. I'll cut & wedge a thin piece of rubber in there when I get a chance.
  • paisanpaisan Posts: 21,181
    Hey guys, did some snow drivinging this weekend! I managed to get my Trooper completely off the ground. All 4 wheels were airborn! I even have it on video, so hopefully I'll get it captured soon and up on the web!

  • radman6radman6 Posts: 81
    Whoa, don't think I'll be buying a used vehicle from Paisan anytime soon : ) I've been tryng hard this winter to make sure all 4 wheels stay on the ground...

    Of course I do remember my youthful off-road racer days when getting airborne was big fun. Learned a lot about auto mechanics back then - mostly fixing stuff I broke ~: 0
  • paisanpaisan Posts: 21,181
    Didn't mean to go airborne but some of the dips we went through managed to get me off the ground. It was very interesting, and I'm glad it isn't the [non-permissible content removed]ender cause I would have cracked a front A-arm on it for sure. :)

  • sbcookesbcooke Posts: 2,297
    Paison, you know you get better traction with the wheels on the ground! How are the new wider tires in the snow? That is one concern of mine about going wider is that my winter traction will be reduced.
  • paisanpaisan Posts: 21,181
    Was about to write it up. The new tires did awsome in the snow, both the thick heavy off-roading snow, and the highway snow I had to deal with on my way back from upstate. Tire Pressure is very important for that though. While off-roading (pics to come) I managed to drive into a pit of snow up to the frame rails. My tires were just spinning around good and stuck, of course I had my 40psi rear 35psi front in at the time. Dropped the fronts to 28 and the rears to 30 and just backed out w/o a problem. Kept them there for the rest of the weekend of snowy off-roading and didn't get stuck except when I drove into a drainage ditch going around a guy who had his snow mobile trailer sticking out into the road.

    On my way home hit the nor-easter on the NYS Thruway. At this point I was running 35psi Rear and 32psi front. No slipping, no grip problems whatsover. I did use "3" for high speed snow driving on the highway and when we got into bumper to bumper snow traffic used "2" and "1" In "1" I was able to almost come to a complete stop w/o braking.

    So in a word the 275-70-16 Pirelli Scorpion ATs did tremendous in the snow!

  • sbcookesbcooke Posts: 2,297
    Would cause you to ride on top of the snow, rather than cutting through to the blacktop? Did that hinder stopping at all?
  • paisanpaisan Posts: 21,181
    The lugs of the AT tire gripped very well, no problems stopping at all. Of course I didn't use the brakes much to stop. If I nailed the gas the rears would slip slightly and then the TOD would pull after about .5 seconds.

  • You are a fruitcake! :o) He He!!! As my school teachers used to say.....four on the floor please!
  • I have a 96 Isuzu Trooper and the spark plugs are popping out of the cylinder causing the compression to drop and also causing the coil to have to be rethread...which isnt cheap. Has anyone ever heard of this before? I am told that it is caused by someone putting the plugs in crooked. Any thoughts?
  • paisanpaisan Posts: 21,181
    Sounds right. I was going to say someone over-tightened them or put them in crooked. :(

  • paisanpaisan Posts: 21,181

    Check out my airborne trooper! :)


  • bluedevilsbluedevils Posts: 2,554
    My experience has been about the same as yours. Our 96 Trooper (no longer with us) returned about 17.7mpg overall vs. our 98 Trooper at about 16.9 mpg overall. On the highway, the 96 Troop outdoes the 98 by about 1-1.5 mpg.

    Like you, I found this strange since the 3.5L in the 98 revs lower at freeway speeds than the 3.2L in the 96.

    My impression was that the 2 Troopers are of about equal weight but I could be wrong on that. 96 was a shift-on-the-fly 4WD and the 98 has TOD.
  • swschradswschrad Posts: 2,171
    not normal, certainly ;) could be cross-threaded, could also be they weren't torqued in correctly. if the threads weren't weakened enough to not hold the plug before, they likely are now, and that does require boring out the hole and using a heli-coil tapped insert. there is a limited number of times you can do that before you have to replace the engine (like once.)

    so now you need to be a lot more selective. your or your chosen mechanics need to know that you should blow the grit away from the plug hole before taking out the old plugs... which should NOT be done with impact wrenches... the threading and the new plug should start off clean and dry, with no rust or oil in the threading... and the plug threads should be lightly coated with anti-seize before being wrenched in. max torque is generally considered in the 10-12 foot-pound range on most applications, and grinding in the sumbucks until you bend your half-inch breaker bar is NOT how this is done, you use a dial wrench without angle attachments.

    the plug should always be started with fingers, or a piece of hose slipped over the insulator of the plug. if it won't turn into the cylinder at least one turn this way, find out why, and do it right. if you don't, you can cross-thread the cylinder and not even know it, which weakens the metal.
  • I had the plugs changed on my 92 Trooper by my local Isuzu dealer. Three weeks later, one of the plugs shot and was lost out while I was on a trip. The Isuzu dealer ended up paying for a tow truck and a night in motel. The plug closest to the driver is very difficult to get to and to torque down (the reason I had the Isuzu shop do the work); it was the plug that left the engine. I replaced the plug, torqued it down, and had no further problems.
  • sbcookesbcooke Posts: 2,297
    It's true! Mike, did your new tires hit the wheel wells during this adventure?
  • paisanpaisan Posts: 21,181
    No rubbing at all! :) Yippie. It was unplanned but I'm glad they caught it on video.

  • My guess is that the new 3.5L, even though it may operate slightly more efficiently than the earlier 3.2L engine, is still putting out more power at the lower rpm and hence is consuming more fuel. The fixed front CV joints on the TOD model may also counter some of the efficiency advantages of the new engine.
  • yunkyunk Posts: 2
    I have owned a '94 Trooper LS (with only 60K mi) for just about a year now and have enjoyed it except for an intermittent noise that is about enough to drive a person insane. Periodically, a chatter develops that sounds like very large nest of very mad hornets!!! At first I thought it might be the bugshield, but the noise is closer to the cab. Then I thought the windshield wipers may be causing the noise, but it seems to be coming from the sides of the window. HELP!!! The noise is so bad that my wife refuses to ride in the vehicle. I have checked some of the previous posts on this topic, but they don't seem to fit this problem.
    PS Are their any repair/maintainence items I should be on the lookout for?
  • paisanpaisan Posts: 21,181
    Or perhaps the cooling fan? Just a few thoughts.

  • sbcookesbcooke Posts: 2,297
    What about that other fix, using screen door bead (or some kind of weather stripping) on the edges of the windsheild for wind noise on trucks with bug shields? There was a recent thread not too long ago about it, I think in the maintenance and repair section?
  • yunkyunk Posts: 2
    Thanks. I was thinking about silicone, but after finding the window spline suggestion I think I will give it a try first. You guys are a great help.
  • Yunk,

    The windshield noise is a known problem on all Troopers from 1992 on. I have owned a 94 Trooper and now own a 2000 Trooper - both had the problem. The problem is caused by the depth of the track between the "A" post and the windshield. The gap is about 1/4" wide and about as deep. The wind moving through this channel sets up a vibration. If you eliminate the channel, you eliminate the noise. my dealer used a bead of clear silicone. Why they don't fix this known problem is beyond me.

    Additional free piece of advice on your 94 - if the transmission ever goes bad DO NOT let anyone try to rebuild it, not even the factory trained mechanics get it right. I went through three of them in one year (at Isuzu's expense) before they put in a factory rebuild and solved the problem.
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