Last post on May 02, 2013 at 7:16 AM
You are in the Isuzu Trooper
What is this discussion about?
Isuzu Trooper, SUV
#9638 of 11964 Re: TOD Clunk and other Q's: Need any suggestions ASAP [seanreid #9637]
May 06, 2004 (3:06 am)
I own a 1999 Acura SLX ( a re-packeged trooper). Same car with a Acura emblem on it. I wouldn't buy another Acura or Isuzu product in this lifetime. I have been trying to get Acura to stand behind their warranty for over a year with no progress. Mine had less than 50,000 miles on it ....was still in warranty.... but they claim my oil consumption of 1 qt per thousand miles is normal for my vehicle.
Read the town hall oil consumption problems for Isuzu.
May 06, 2004 (4:00 am)
myhuns, thanks for the warning. Actually, I owned another 1999 (totalled when an elderly man turned left in front of it while it was being driven by a friend) and liked it very much. Have you tried a replacement PCV? I know about the oil consumption but like the vehicle anyway.
I do really need some help on this TOD clunk though, anyone?
May 06, 2004 (6:31 am)
I'd be worried about the clunking/slamming into TOD. It can't be good. My 1998 is silent upon engaging TOD (although there is a very slight driveline noise once it's in TOD). On the other hand, I can't say that I've ever engaged TOD at a speed higher than 30 MPH.
I have a friend with a 98 SLX. He had to have the trasmission rebuilt at about 55K. It's the only thing that worries me about my Trooper.
#9641 of 11964 Clicking fron front end
May 06, 2004 (9:42 am)
I have a 98 Troop with 4x4, AT, TOD and 59k miles. I've recently noticed a clicking sound coming from the front end when turning the wheels to the right. It is NOT a CV joint, because I have manual hubs installed and the sound is the same regardless of whether the hubs are locked or unlocked. It is not just a rock or nail in the tire. I hear it when TOD is off and hubs unlocked, so I really don't think it has anything to do with the front driveline. The only other thing I can think of is a wheel bearing. I don't know if they have ever been repacked. Any other thoughts on what it might be? Thanks!
#9642 of 11964 Re: TOD Clunk and other Q's: Need any suggestions ASAP [seanreid #9637]
May 06, 2004 (11:40 am)
I have a 1999 Trooper (Luxury) and a 1998 Trooper (Luxury). Neither of them "slam" or "thunk" when I press the TOD button. But, there is a roar in TOD with the 1998. I think that is because there are 3 different manufacturers tires on it. Tommorrow, that will be verified when I get the tire issue worked out.
I like Isuzu Troopers and think they are great vehicles. Some of them do burn oil between oil changes but to me that issue is not a show stopper.
Was that list of 35 items the 60K service? If so, I also need to do it as my 1999 has 65k on it. Too bad we don't live closer together as we can get these Troopers side by side and do the maintenance assembly line style.
#9643 of 11964 Re: Clunk, etc. [seanreid #9639]
May 06, 2004 (1:13 pm)
Sean - my '99 might or might not clunk when TOD engages. Sometimes it does and sometime it doesn't. Things that help mitigate the clunk:
1. Check the transmission and transfer case mount bolts. Mine were loose when I bought the thing brand new. Having those tightened up helped a lot.
2. Do not engage TOD unless you are driving in a straight line. If the front axle shafts are turning at different rates when TOD is engaged, you are guaranteed a clunk. This, however, will not always prevent a clunk.
Regarding the transfer case whine, they all whine a little bit if you listen carefully. It shouldn't be a roar in your ears, but keep in mind you are sitting on top of a transmission that probably contains a multirow chain or some large gears swirling in Dexron II, not gear lube. They will make some noise.
I don't think you will ever achieve a seamless transition. If you do consistently, I would worry that TOD is not engaging properly.
#9644 of 11964 Clunking and maintenance: Bought the 99
May 06, 2004 (9:47 pm)
I had the truck checked out by my mechanic today and then drove it back to MA and bought it for $10K. It seems like a good vehicle for the money, has a 2500 mile powertrain (plus various items) warranty and the dealership gave me an excellent trade allowance for my 2002 Avalanche. (Yes, I traded "down" financially. We have been making payments on four vehicles (business and personal), one less vehicle with payments is a good thing). If this one holds up and is reliable, it will be a bargain - all the luxury bells and whistles for 10K.
I was unable to duplicate the TOD clunk today and wonder if, without realizing it, I was engaging TOD with the wheels turned a bit (sometimes) last night. I was tired, it was a long drive, etc. Maybe I wasn't being careful enough. Or, maybe it hadn't been used much in months of sitting at the dealership (very possible) and needed some exercise. I also think I'm going to make a practice of engaging TOD only at very slow speeds (or when stopped). It certainly can't hurt to lessen the load on the drivetrain that way. My mechanic, who's worked on all of our vehicles, thinks "shift on the fly", in any form, is hard on the drivetrain even though the manufacturers may say its OK.
This "new" Trooper has new tires all around as well as new front rotors and pads. The rear pads are also new but my mechanic thinks the rear rotors are no good. So, after some negotiating with the Lexus dealership, they agreed to give me a check for $400 to be used with my mechanic for a rear brake job (about $300) and towards a full fluids change. My inclination is to change all fluids. ie: power flush the tranny, change to Mobil 1 engine oil and filter, put fresh ATF in TOD unit, fresh synthetic hyphoid oil in front SOTF, fresh synthetic in both diffs. Does that make sense? That way I'll be starting out with new tires, new brakes and fresh fluids. I'll have them look at the coolant and see if that's worth flushing too (anyone have advice on that?) Naturally, we'll grease the driveshaft fittings and all the other grease points. I'll also do the serpentine belt because the truck is on its first belt still (I was told).
Does anyone have a source for good rotor prices? Are stock rotors best or are there better aftermarket options? NAPA rotors OK?
Isuzu specs timing belt replacement as 75,000 - 100,000 miles (depending on driving conditions). Is there any need to do it earlier?
cwm - My list is sort of a 60K service but it's a homebrew list I put together based on looking at the manual and thinking about my specific truck. A trooper wrenching party would be great.
Where the heck is the ATF fill bolt on the tranny? Same question for TOD unit. My mechanic and I were both under the truck today (on a lift) and couldn't find either one. We ignorant folks need some enlightening.
Does Haynes or Clymer make a repair manual that covers a 99 trooper? I'll check Amazon.
Thanks for the replies so far, I'm all ears (well, not quite like Ross Perot but my ears are wide open)
#9645 of 11964 checked the mounting bolts this AM
May 06, 2004 (9:49 pm)
they seemed tight
#9646 of 11964 Happy with mpg so far
May 06, 2004 (9:56 pm)
My first tank of gas (midgrade) with the "new" Trooper gave me 19.4 mpg in a mix of highway (mostly) and back road driving.
#9647 of 11964 Re: Clunking and maintenance: Bought the 99 [seanreid #9644]
May 07, 2004 (4:48 am)
Agreed that the slower you are going, the less stress you will put on the drivetrain. You will rarely, if ever, get a clunk when you are going slowly.
If I recall, the TOD drain and fill bolts are on the back side of the transfer case. Again, if memory serves, they are both similar to gas or pipe bolts, in that they have a square opening (for use with a 3/8 ratchet or extension) and are tapered so they get tighter as you thread them in. The drain is obviously toward the bottom of the transfer case, the fill bolt about 1/2 way up. The TOD takes Dexron II ATF. There is no separate transfer case lube--it's all one housing.
I believe the ATF fill bolt is somewhere on the pan, but I have never cracked it open so that's a shot in the dark.