I have a 1996 Trooper, and I have over 410,000 miles on the original engine and transmission, but I did have to rebuild the transmission once, due to the fact that I took it to have the oil changed on it at one of these easy oil change places and they messed it up by not putting th correct amount of transmission oil, they called me after a few hours asking me where was the dip stick or the cap where the tranny oil went into. I was so pissed off. I had to look it up and tell them, they looked at me like I didn't know what I was telling them, when I told them that they needed to pump the oil up into the tranny from under. Well they told me that they did, but was wrong. I later found out driving home and the car stopped completely, a friend of mine did all the servicing for the tranny and was able to fixed it, he told me that the other guys had only put about 4 quarts into it when it took almost 15 quarts. This car is the second Isuzu I have and wish they didn't stop making it, I use it for heavy loads at work and drive all over the west and Mexico in it. It's more reliable then any more expensive America or German car I have ever owned.
The brake pedal has to be fully depressed for the stick to engage.
Go buy CD manual on e-bay 6 quid.
If like my 2000, it is on the left valve cover. it is too cold to go out and double check.
If the engine has done high miles, check for how much oil is in the air filter hose to the inlet to the motor. You could be using it here as it mixes with the fuel in the motor.
I currently have the same thing and it is a defective battery (the one on the nearside). After a couple of miles it had charged up enough for the lights to go out but I will be buying a new battery tomorrow.
Go to autozone .com and look in the repair info .
there is a drain plug and a fill plug on the underside of the transmission. you need to use the fill plug. You can not fill the transmission fluid or check the level, any other way.(it is a ridiculous design, i know.....) go to autozone.com look under Isuzu repair info, then choose the year and choose "trooper".then look under "fluids" the info will be there.
I reset mine on 1999 Trooper frequently with a code reader for my laptop. The cost is $80 - 120, for reader with cables.
if you go to a part store to get the O2 sensor you could actually ask them to give you a diagram or directions how to change them KKODAL
Go to Advanced Auto Parts, buy QUALITY blades ( teflon )and they will put them on for you.... Also, PepBoys and AutoZone will install them for you free as well...
Isuzu is still producing its motors and cars. But I'm afraid that Isuzu will go out of business soon.
check the engine temperature sensor. the trans won't go into overdrive until the engine is warm.