Last post on Jul 09, 2013 at 7:15 AM
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Isuzu Trooper, SUV
#11375 of 11966 Re: Isuzu 1999 trooper OIL CONSUMPTION [flye]
Oct 10, 2006 (6:09 am)
I drive a 1999 Isuzu Trooper and I have been told by EVERY mechanic that i encounter that knows a thing or two about Isuzu engines knows 3 things. 1. color coded parts makes rebuilds hard, 2. Isuzu engines will last a long time if your timing belt is changed religiously every 75,000 miles and 3. Isuzu engines burn oil like mad.
just check it every 500 and ull be fine
but always have at least a quart on u if u drive alot
and u do!
#11376 of 11966 98 Trooper Hawaii to New Mexico questions
Oct 10, 2006 (11:27 am)
Hello, I am moving my beloved 98 Trooper S (automatic tranny, 4X4, 55,000 miles) from Hawaii to Northern New Mexico in a month. It has spent it's entire life in Hawaii. What should I do to prepare it for the cold.
#11377 of 11966 Re: Isuzu 1999 trooper OIL CONSUMPTION [cki_primer]
Oct 11, 2006 (3:31 am)
cki primer, Maybe it is time for you to find a less opinionated mechanic that will help you feel better about your Trooper. What other vehicle is your mechanic trying to sell you on?
Timing belt changes are at different mileages based on Trooper models. Mine is a 2001 and timing belt change is at 100K (coming up real soon for me), and my engine is a non-interference design, so if the timing belt fails, the engine will not be damaged.
My 2001 uses a little oil, but small enough amount that if I change my oil every 3000 miles I don't have to worry about adding any. If you hear a slight lifter ticking at startup, that is a clue to check the oil level. My 1995 Trooper never consumed oil at all in the 140K miles I owned it, at least not enough to tell by the dipstick measurement.
Isuzu engines do last a very long time, just like any well made equipment you must keep up the maintenance to get it to last. I have driven over 400K miles in three Isuzu Troopers and I am very pleased with their reliability.
All that said, do I recommend everyone drive an Isuzu? No, I don't because there are few dealers around and fewer mechanics that like to specialize in Isuzu. I will stay with my Trooper as long as I can keep it running like new. I am also hoping that Isuzu begins selling diesel cars and SUVs and pickup trucks in the USA because I think there is a big untapped market in the USA for fuel efficient diesels and Isusu is one of the best diesel engine makers when it comes to fuel efficiency.
#11378 of 11966 Re: 98 Trooper Hawaii to New Mexico questions [bhaver]
Oct 11, 2006 (3:34 am)
Just make sure you have proper antifreeze in the radiator and in the wincshield washers for both front and back windows. If you are using a heavy viscosity engine oil you might want to change to 5W30 or whatever your user manual tells you for cooler weather.
Hawaii and New Mexico are both rust free places so your Trooper will look new for a very long time.
#11379 of 11966 Re: 98 Trooper Hawaii to New Mexico questions [boxtrooper]
Oct 11, 2006 (8:30 am)
#11380 of 11966 Auto trans acts weird when cruise is on...ideas??
Oct 12, 2006 (8:48 am)
I've searched the forum to see if anyone else has reported this issue and I can't find it.
I have a '98 Trooper with about 81K miles. Love, love the vehicle - have owned it for about 2 years.
The great majority of driving I do is in the city, so I rarely use the cruise control. However, when I DO use it - at speeds of 60 and above, it frequently will kick the transmission out of 4th gear (I think that's the final gear...) at the SLIGHTEST incline. I'm talking about an incline that if I was NOT using the cruise, no WAY would the transmission need to downshift in order to negotiate.
I've tested it. I can maintain constant highway speeds with no problem whatsoever and NO TRANSMISSION DOWNSHIFTING without cruise control.
If I let the cruise handle that same stretch of road - it will most likely, at some point, kick the tranny out of final gear at a slight incline...and it doesn't exactly go RIGHT back to final gear after it does so, either. It takes a few moments of completely flat road.
It's unpredictable, yet consistent - as it happens every time I use the cruise for ANY substantial time period...like maybe more than 20 minutes.
So, it's weird - separately, the transmission shifts beautifully...no issues - and in theory, the cruise works well as it holds the speed quite accurately. Somehow - the 2 of them don't get along!
Would really appreciate some feedback. By the way, I have done all required maintenance on the vehicle...I want it to last!
#11381 of 11966 Re: Auto trans acts weird when cruise is on...ideas?? [shawgb]
Oct 12, 2006 (9:37 am)
Hi, I have not run across any post describing the conditions you do for your trooper, but I thought you might be interested in what the manual says about the cruise control. I don't see any thing in the description that might lead to the behavior you describe, unless it is the powertrain control module or the cruise module that has a glitch that might cause this. I really do not see where the action you describe would create any real problem for most driving conditions, and since the trans locks back up when the temporary acceleration is done, then mileage would not seem to be an issue. Here is what the manual says:
1998 Isuzu Truck Trooper LTD V6-3.5L
Vehicle Level Cruise Control Description and Operation
Description and Operation
The cruise control system uses mechanical, electrical and vacuum-operated devices to maintain vehicle speed at a setting selected by the driver.
The cruise control unit receives command signals from the cruise control switch. It receives information about operating conditions from the brake switch, the speedometer, the clutch switch (manual transmission) and the automatic transmission mode switch and Powertrain control module (PCM) (automatic transmission).
The cruise control unit sends operational signals to the devices that regulate the throttle position. The throttle position maintains the selected vehicle speed. The control unit compares the actual speed of the vehicle to the selected speed. The control unit then uses the result of that comparison to open or close the throttle.
The brake light switch releases the system's control of the throttle at the instant the driver depresses the brake pedal. The switch sends a signal to the cruise control unit when the brake pedal is depressed; the cruise control unit responds by allowing the throttle to close. The clutch interrupt switch or the automatic transmission mode switch sends a disengage signal input to the cruise control unit that also allows the throttle to close.
The cruise control system will set and automatically maintain any speed above 25 m.p.h. (40 Kph) . To set, press the cruise control main switch so that the "CRUISE MAIN" indicator is ON . After reaching the desired speed, press the set switch. The cruise control unit will receive a set signal input and will activate the cruise control actuator.
Pushing the cruise control switch cancels the cruise control system. This removes power to the cruise control unit and erases the set speed from memory. The cruise control system also disengages when cruising speed is lower than the preset speed by 12 m.p.h. (19 Kph) or more. If the system is disengaged temporarily by the brake switch, clutch switch or the automatic transmission mode switch and vehicle speed is still above 25 m.p.h. (40 Kph) , turn and release the Resume/accel switch turned and released, the set memory is retained, the vehicle automatically returns to the previous set speed.
For gradual acceleration without depressing the accelerator pedal, turn the resume/accel switch and hold it there until the desired speed is reached. This will send an acceleration signal input to the cruise control unit. When the switch is released, the system will be reprogrammed for the new speed. Quickly turning and releasing the resume/accel switch allows you to tap up the preset cruising speed. Each turn increases the preset speed by 1 m.p.h. (1.6 Kph) . The Preset speed can be increased by up to 10 m.p.h. (16 Kph) in this manner.
To slow the vehicle down, depress and hold the set/coast switch. This will send a deceleration signal input to the cruise control unit, causing the vehicle to coast until the desired speed is reached. When the desired speed is reached, release the set/coast switch. This will reprogram the system for the new speed. Quickly depressing and releasing the set/coast switch allows you to tap down the preset cruising speed. Each depress decreases the preset speed by 1 m.p.h. (1.6 Kph) . The preset speed can be decreased to a minimum of 25 m.p.h. (40 Kph) in this manner.
#11382 of 11966 Re: Isuzu 1999 trooper OIL CONSUMPTION [cki_primer]
Oct 12, 2006 (2:55 pm)
I'd have to second this. I've owned my Trooper since I purchased it new in 1999 and it uses a quart of oil every 800 miles. I've always used Mobil 1 synthetic. I'm selling it soon because I'm tired of adding oil to it and the mileage sux. It's at 85,000 miles and needs a timing belt.
#11383 of 11966 We need your help!
Oct 15, 2006 (10:31 pm)
Hi, everyone. As you've probably noticed, we have been trying to refine the discussions into more narrowly focussed topics. Our objective is twofold. We want to make it easier for people seeking specific information about their vehicles to find it easily and without having to wade through hundreds or thousands of postings.
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Oct 24, 2006 (9:53 pm)
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