Isuzu Trooper loss of power problems

Filed Mar 21, 2016 · Acceleration, Engine · 160,500 miles · AZ

Last 3 weeks - initially seemed like power loss/surge, then heard unusual sound coming from engine compartment 1 week ago, engine started to die while operating on city/residential streets whenever not pushing gas (slowing to turn or stop) friday, would not even hold idle to start, pushed gas and held RPM's at 1 - 1.5 for a while and finally started. Today, initially would not start. Next time started RPM's at over 2, dropped when shifted to reverse, when shifted to drive vehicle accelerated without use of gas pedal up to steady 35 MPH on city street. After 1 mile, at next intersection started making that strange noise in engine compartment (like air or fluid under pressure ie air compressor/high pressure water sound) while pressing brake shifted into neutral RPM's revved to 2.5, in drive and reverse dropped to 1.5, in park revved to 2.5, after turn automobile accelerated to steady 40 MPH on city street without gas being pushed at next stop (1 mile) returned to normal idle and operation. Has problem both when cold and hot weather and cold or hot start. It has not produced a check engine light or any codes

Filed Apr 9, 2014 · Electrical · 81,897 miles · AZ

I was driving about 35 MPH on a rural road and I noticed that upon giving some gas the vehicle did not respond at all. Then I noticed that all my instrument panel lights were out....everything gone. I applied the brakes and with difficulty in steering (there was no power), I pulled to stop at the side of the road. I then put the vehicle into park and turned the ignition key off, then restarted the vehicle and drove away. This is the only time this happened (last week).....a complete loss of power. I know isuzu shares parts with gm (e.g. My transmission is gm). I hope this is not an example of that gm ignition switch problem.....but certainly has the exact same symptoms of it. But it is very scary loosing complete power like that.

Filed Jan 20, 2008 · Engine · 102,000 miles · CO

I took my '99 isuzu trooper to get an oil change, and 3 weeks later the oil light turned on. I went to the isuzu dealership where I bought the car and after checking the oil, they noticed that there are less than a liter in the engine. They filled it and added a conditioner telling me that that should fix the problem. A few months later, driving back from a trip, the engine began knocking and the oil light came on again. Moments later I lost power (rpms) and pulled the car over. The mechanic who looked at my car told me (and this was confirmed by a consumer report website) that '99 troopers often have "unexplained loss of oil pressure resulting in the engine seizing." the car now needs a new engine (approx 4000-9000 dollars) or a new car. Nothing has been done to correct the failure or defect.

Filed Mar 1, 2005 · Engine · 70,100 miles · MN

Prior to leaving on trip from minnesota to montana I checked the oil and it was fine. Just outside billings, mt my engine made a loud banging sound followed by engine power loss and finally the warning lights on the dash. Zero oil registered in the engine. Diagnosed as a seized crank by the isuzu dealership. 70,100 miles and a seized engine out of warranty since I bought the truck used. $6,000 for a new engine does not make fiscal sense given the wholesale value of truck was $7500.

Filed Feb 2, 2005 · Electrical · 92,600 miles · CA

In october 2004, while driving 65 MPH on the freeway, car automatically reduced power to 5 MPH. Deceleration of automoblie was pretty rapid. The vechile was brought to the isuzu dealership. A number of tests were run, but nothing was found. Service department could not find any thing wrong with the vechile. On january 25, this happened again while driving on the freeway at 65 MPH. The vehicle was towed to a isuzu service department. They replaced the acceleration sensor and said the vechile was fixed and picked up on january 27. On january 28, the vechile again lost power while driving on the freeway at 65 MPH. The vechile was towed and brought into an isuzu dealership (same dealership as in october). They couldn't find any codes present and said the vechile was fine- couldn't find a problem. On january 31, the same occured. The vechile lost power while driving on the freeway. Again it was towed to the isuzu service (same service department as january 25-27). They can not find out what the problem is. They called isuzu main help line and still have no answers. The isuzu corp. Suggested replacing the throttle body and if that doesn't fix the problem, then the electrical harness. Still no guarantee that the mentioned services will fix the problem. Luckily, no accidents yet. Vechile not safe to drive and isuzu will not cover any repairs even though loss of power is a safety issue.

Filed Apr 28, 2004 · Engine · 68,000 miles · NY

While driving at 65 MPH vehicle stalled. When this occurred vehicle lost power and coasted to a stop. Vehicle was towed to a dealership, who indicated that this occurred because there was no oil in the engine. The engine was replaced, but the problem recurred.

Filed Mar 20, 2004 · Engine · 36,000 miles · RI

Car has lost power and gas mileage has been cut in half (maybe 12 mpg at best) has only 39000 miles...dealer says the tubes that recycle un-burned gas fumes are clogged and need cleaning but they nor isuzu has a tool to do the job...it's hard to believe that a huge company like isuzu would have such a problem.

Filed Mar 20, 2003 · Transmission · VA

Nar 03-24-2003 mr when the vehicle was cold and the consumer attempted to accelerate onto the highway, the vehicle stalled repeatedly. The check transmission and reduced power light illuminated.

Filed Dec 6, 2002 · Engine · FL

While driving vehicle, if you try to pass someone or accelerate, sometimes the vehicle will loose power. Consumer states' once when vehicle loss power it almost resulted in a rear end collision. Please provide any further information. Ts

Filed Mar 2, 2002 · Engine · AZ

This intermittent problem could cause someone to get injured if they are in freeway traffic and the vehicle will only go 25 MPH!!! This vehicle has an intermittent problem of stalling when stopped at intersections (vehicle is idling). The car can be resstarted immediatly. However, after starting it has little power and the maximum speed is 25 MPH. Both the "check engine" and the "reduced power warning indicator lights" come on. It has been to two dealers a total of 6 times and they have not resolved the problem. I am afraid to drive the vehicle as I have been in 50 MPH traffic going only 25 MPH and feared for my safety. I would appreciate your review. The dealer has replaced the throttle plate, re-wired the wiring harness and made other adjustments. They still cannot fix the problem. This needs investigation! Thanks