1993 Isuzu Trooper Warning lights, AC blower, no voltage HELP

Sounds to me like a bad battery, cables or ground somewhere. Elecrical problems can be many different things, start with the basics. A battery with a shorted cell can act very weird. It sounds to me like it was runing off of just alternater power when it was running, because a simple voltage draw, like rolling up the windows, can cause lag in power production from the alternater and cause the ecu, fuel pump, ect. To run under voltage. Like I said start with the basics - termals, grounds, batt. Remeber that somtimes a shorted batt will read ok when not moving, but a simple jar can cause it to short.

I am also having a simular problem with my 91 pup. It has the 4ez1 2.6l engine. When I figure it out I will let u know.

O2 sensor light stays on until started

Thanks for the info. I've charged the battery and have done the following checked to see if there is a short by taking the negative cable off and attaching a light between negative terminal and negative cable and there wasn't one there. I have also had the car running and while running removed the postive cable and the vehicle completely died. So, can a ground wire do that or I'm thinking its my alternator. By the way the 02 light is still on. Thanks for your help. Tambra

Do you have a multi meter? (Voltage reader)

Hi again, Well I actually just came from the part store, where I just purchased one. I'm going to go to do a no load and load test according to my chilton and see what the outcome is. I really do think it is the alternator, for the car to die when you remove the positive cable, I would think that was the problem. I want to be positive though, because the part isn't cheap and the job ain't easy. Thanks for your help. I'll let you know what I come up with. Tambra

Hi Again,

I just wanted to update and ask another couple of questions. I've done all the loaded and unloaded voltage testing on battery and cables and have traced it to the alternator. Was going to buy one from Autozone and have local mechanic put it in, but after reading all the reviews about buying one from these type stores and hearing its best to get a OEM alternator (500+ dollars) which I can't afford. I stumbled upon a place that rebuilds alternators and they gave me a quote of 30 to 110 bucks to rebuild, but told me more than likely it is going to just be the bushings and cost about 45 bucks. Does that sound about right? Also, do you think this would be the better way to go? Before I get dirty and pull this thing off, I would like to get your opinions. At this point I'm only out (20 bucks for the voltage meter I bought :lol: ).

One more thing, when the blower on my A/C went out at the same time, will replacing the alternator make it come back on, because all the fuses look fine.

Thanks again for all your help, I couldn't have gotten this far without it.

Tambra

Its a charging problem, when revcounter goes up + down like that it can be a loose belt or alternator on its way out. Ken

Hi Everyone,

I wanted to thank everyone for their help. I put in a reconditioned alternator with a lifetime warranty from Advanced Auto Parts on Saturday and all is well. The warning lights on the dash are all off now and the blower on the a/c is back to working. It's running perfect. Wasn't a hard job at all. You have to take off the right front tire and pull off the rubber cover and the alternator is right there, 2 connectors and 4 bolts and you are done and just as easy to put back in. Thanks again, I couldn't have done it without all the feedback and post on this site and the www. Planetisuzu. Com site. Tambra