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Isuzu Owners Maintenance and Repair

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  • paisanpaisan Posts: 21,181
    Whine: Had only 15psi in one of my rear tires that has developed a slow leak, filled it up whine went away.

    Oil Consumption: I'm about 3500 miles into my first Synthetic oil change and it has only sucked down 1 Quart of oil which is about 1/2 as much as before. I'm hoping the Synthetic keeps it that way.

    -mike
  • Trust me and Randers3 on this one: the Bosch +4 plugs are NOT compatible with the Trooper's ignition system. Remember that. Also, when you do maintenance on the plugs and boots make sure you put a thin coat of dielectric grease on the ceramic/tip of the spark plug and some inside the rubber boot to prevent the metal parts from fusing together. Also make sure you put some good anti-sieze compound on the plugs' threads to prevent the plugs from seizing to the block.

    Paisan: I replaced the plugs because they provided a measurable performance improvement in my last car. No harm done here.

    Islander
  • paisanpaisan Posts: 21,181
    This is good knowlege base stuff for the new direct fired 3.5liter engines. I should start a FAQ for my website of all this stuff so we can just refer people there when they have a question...

    -mike
  • sbcookesbcooke Posts: 2,297
    I have not experienced much oil burn after the first 1000 miles. Does the trooper have a GM engine? We might be able to find some information on the engine from other gm sites? I would imagine it would burn oil in whatever gm uses it in.
  • paisanpaisan Posts: 21,181
    Isuzus have their own engines since early to mid 90s.

    Isuzu claims 1Q per 1000 miles is normal in the owner's manual. If that is the only thing I have to worry about on a car is to check the oil, I think that's awsome.

    -mike
  • The owner's manual on a Porsche 911 says that it may burn a quart every 600 miles, so it could be worse.
  • Hi there. It's my first post here - but I've been having some problems and figured some of you more knowledgeable Isuzu owners might know where to turn on this.

    I have a 1994 Amigo 4WD, with 78K miles on it. It's a second car, so I haven't been forced to deal with this or sell it (yet...). About 6 months ago, I was driving in stop & go traffic in hot weather (95 degrees) and noticed the transmission slipping (it would go in gear but was slow to engage). Eventually, I got to a stop light and it would not engage at all (I had to push the truck off the road). I let it cool down for a few hours, and it drove fine with no sign of the slipping. I took it in to my mechanic (who has worked on it in the past) and they found nothing wrong. They replaced the tranny fluid and it was running fine.

    Over the past 6 months, I have noticed that it starts slipping on a long trip or on hot days when I am doing a decent amount of shifting. This has slowly been getting worse. Last weekend it happened on a 70 degree day for only a 30 mile drive.

    Has anyone seen any problems like this on the 1994 Amigo's or Rodeo's (I would guess they have the same manual transmissions?)?

    78K miles seems a little early to be having the transmission die? I did have the slave plate of the clutch replaced about 10K miles ago, but the clutch itself seems to be working fine.

    I'm not sure if I should take it back to the dealer, my mechanic, or if this is a chronic problem?

    Any help on this matter would be appreciated. Thanks!
  • Since I have just read through the posts today, I noticed a few people inquiring about their seats not working right or having too much play.

    I had the same problem with my 1994 Amigo. I took it to an authorized mechanic recommended by Isuzu. He took the seat out completely and re-aligned it. Apparently the seats are easy to put on incorrectly. They feel like they are on most of the time - but when you are either starting forward or going up a steep incline you feel the seat move.

    Hope this helps.
  • gpm5gpm5 Posts: 785
    That is interesting in terms of another vehicle I own--a FORD Windstar '98. The auto seat was ripped apart several times under warranty and now it slips like that. I called and complained and they said "it was normal" i.e. the normal FORD line of crap. That together with the problematic tranny and I'm looking at replacing that vehicle with a large SUV. Unfortunately, Isuzu likely won't make the trooper as big as the Suburban. My experience with GM engines/transmissions are that they are a heck of a lot more dependable than FORDs. I hoping for my trooper engine to last a long time as well--I really enjoy that truck.
  • paisanpaisan Posts: 21,181
    Perhaps the Astro/Safari Van could fit your needs. It's AWD, plenty of seating, same interior space as a suburban, and is RWD based (longitudially mounted engine), can tow a decent amount, and is much cheaper than any SUV. Just a thought.

    -mike
  • gpm5gpm5 Posts: 785
    I've thought about the big ones, not the Astro--that thing is IMO junk. I also don't like sitting basically on top of the engine--which is the case with the Astro. I like the separate engine compartment. The nice thing about the sharing between GM and Isuzu is the tranny. The '99 and later Suburbans have the AWD (i.e. auto 4 wheel), the 4lo and the 4 Hi. I like that. I want a 2nd vehicle for long road trips (i.e. the 10 hr type) and that can take the family camping, offroad etc. For most short trips (up to 4 hr), I would take the trooper but the longer ones the extra space of a big SUV is nice.
  • paisanpaisan Posts: 21,181
    The GMs don't use the same Tranny/ T-case that the TOD uses. The GM ones are re-active, not pro-active like the Trooper one. They will only move power to the front wheels once you are fully spinning the rear wheels of the suburban. The trucks with AWD from GM are only the Safari/Astro, and the Olds Bravada. I actually really like the Safari when I rented one, lots of pep, and tons of room.

    -mike
  • gpm5gpm5 Posts: 785
    Yes, I gathered that from talking to a sales person (i.e. nothing is going to the front while in auto 4WD). They do advertise the Yukon XL as AWD though. Do you know if this AWD is different from the Suburban. I have not looked carefully at the Safari, so can't say much there. I'll have to look at them. I've been in GMC Suburbans several times. They have great space and can fit in a garage.
  • armtdmarmtdm Posts: 2,057
    Bosch +4. Hope you have good results with these. I placed them in another car but should have read the Consumer Reports issue that said they did nothing because they did nothing in my car as well. My humble opinion, a waste of money. Stay with the stock Champion platinum plugs as noted in the owner's manual.
  • gpm5gpm5 Posts: 785
    The gmc safari is just the gmc version of the Astro. I've been in the passenger seat of that--worse experience I've ever had in a passenger seat--but only for a short drive thankfully--basically you have to scrunch your legs to the right side because the engine is sitting where your legs are supposed to be. The savanna van is their big van (my neighbor has one for commercial work) but that one is too big (you need a step ladder to wash it)--better off with the suburban.
  • paisanpaisan Posts: 21,181
    Ok did some checking here's the dealio:

    Auto-4wd:

    This is the reactive system, that puts 100% power to the rear, only when you are spinning the rears will the fronts engage and then they engage 50/50 torque split. This system has Auto-4wd, 2wd, 4wd hi, 4wd lo. This available on the Yukon, Yukon XL, Suburban, Tahoe

    AWD:
    Not sure of the split (I believe 50/50) uses a viscouse center coupling (similar to the Astro/Safari/Bravada) not-disengagable, no Low-range. This is available on the Yukon Denali, Yukon Denali XL, and Caddy Escalade.

    -mike
  • gpm5gpm5 Posts: 785
    Interesting info. I wonder why, since GM provides the trooper etc tranny, that they don't make a similar system for their own large SUVs. Trannys are the weak link in many vehicles though. I believe the FORD Windstar transaxle (and possibly many FWD vehicles trannys) are really not designed for the weight that is being put in these vehicles. The Ford WS tranny feels like its going to fall out (no kidding--sloppy and jerking) when I have it loaded down and I've driven it for 500 miles in the summer. In the same vein, I think FWD SUVs (Mazda tribute/Ford escape, honda CRV) are really a poor design. Okay for the get around town person but that's about all. I've drivin behind the Ford escape. There are rods on the back wheels that must be limiting ground clearance under that vehicle to about 4 inches. Those things would be ripped off in any rough terrain.
  • paisanpaisan Posts: 21,181
    GM makes the Tranny for the Trooper, but it can't handle the torque and hp (according to GMs page) that the Chevy 350s are putting out. As for the T-case it's actually a Borg Warner unit, so I'm not sure if GM supplies it or not.

    -mike

    PS: The Envoy finally get's the folding mirrors of the Trooper, 3 years later.
  • On the 1999 Troopers does the oil plug have a washer used along with the plug? Mine only uses the plug and it doesn't seem to leak.
    Thanks guys
  • sdc2sdc2 Posts: 780
    I don't recall a washer on the oil drain plug on my 99...
  • raydahsraydahs Posts: 449
    Yes it should have a copper washer, they're .85/ea. at the dealer. If you don't have a washer you'll have to torque the nut more to get it to seal. You can actually see the hex imprint on the washer when you do your oil change, I change mine every time. If you dropped the nut into the pan by accident (I've done it) and had to fish it out it could have fallen off then.
  • sdc2sdc2 Posts: 780
    Well, I'll look more closely next time I change oil - maybe it's there and I didn't notice. It isn't leaking, so no worries for now...
  • alcjewalcjew Posts: 173
    After +33k miles my '99 Rodeo AS had to go in service for a "Check Engine" light. It was running rough tam idle prior to that and would die out after a re start. Took it into service and it turned out to be a cracked intake manifold gasket and had it fixed under warranty by the great folks at Seekonk Isuzu (E. Providence, RI). It took only 2 hours to diagnose problem and replace the gasket. The Rodeo is back to its old self again ready to tackle anything in its path. If anybody has run into the same problem then have your Isuzu service check it out.
  • bluedevilsbluedevils Posts: 2,554
    Can you elaborate on exactly what your Isuzu mechanic did to fix the excessive forward/rearward motion of the driver's seat? I've given my local dealer one chance to fix mine so far, and they decided to say there was nothing wrong with it. This one is really starting to bug me.
  • bluedevilsbluedevils Posts: 2,554
    Yes, the vehicle should have come with a washer, so if it's not there any more it must have been lost or discarded. I change the oil myself on my 98 Trooper and I replace the drain plug washer with each oil change.

    I order my Isuzu parts from St. Charles Isuzu near St. Louis. Free UPS shipping. 15% off manufacturer list price on all genuine Isuzu parts, from oil filters to running boards, if you say you're an ITOG member or if you mention St. Charles' web site (www.stcharlesauto.com).

    Their invoices list oil filters for newer Troopers as $5.07 apiece. At 15% off, they are $4.31. Frequently, St. Charles runs a special of 30% off list on oil filters which makes them $3.55. The washers are $0.70 list, $0.60 St. Charles price.

    If you folks haven't noticed, I'm formally plugging St. Charles and recommending them as a great place to give your business! I've bought about 15 oil filters and washers, a couple air filters, and the black Isuzu running boards and been very satisfied every single time.
  • I wanted fog lts for my 99s. I searched high and low before I realized that I would only be happy with the stock fog lights. Even though Isuzu does not make a kit for the troop the parts guys were happy and competent enough to look up the parts for me. They got it right on the first attempt. They have my business now.

    Troopin.
  • raydahsraydahs Posts: 449
    Bluedevils,

    I don't know about yours, but mine started this annoying seatback rocking @1/4" back and forth.
    When I took it to the dealer, they told me the same thing....it's just that way. Then I asked if they (the dealer and Isuzu) were going to take responsibility if I got into an accident and the seatback failed under a g-force load. After discussing it with the service manager, they decided to go on the lot and pull a new one out of new rig and install it in mine. Just mention safety issues and you'll get a response....fast!

    It's too bad it had to come down to saying that, but it's a true statement.
  • paisanpaisan Posts: 21,181
    Yep, I've had similar problems with all different makes and manufactueres. When I had a problem with my TOD/front diffy (or so I thought) it wound up being a tire that was off spec (1/2" diameter difference) causing the noise. But after they fixed it they tried to charge me a $100 computer diagnostic fee. I responded "no problem, so long as I get in writing that you will refund the $100 if this problem comes back and it is actually a warranty issue" They immediately credited the $100 saying 'we wouldn't be able to refund it later on so we'll refund it now just in case'

    -mike
  • paisanpaisan Posts: 21,181
    I make them take me for a test drive in a brand new one on thier lot and show me that it is normal. That was the case with my slightly vibrating mirror on my Trooper. I test drove 1/2 a dozen other ones @ 75mph and they all were the same, so I said "ok, it's normal"

    -mike
  • gpm5gpm5 Posts: 785
    the translation is we're too lazy or incompetent to deal with that problem, we need alot of help, we need a kick in the pants, or you have to take it somewhere else.
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