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

Tiny
EMERALDTF
  • MEMBER
  • 1993 FORD WINDSTAR
Hi,
93 isuzu trooper 3.2L 6 cyclinder 90,100 miles. Manual transmission.
My O2 sensor light came on first about a week ago then my warning lights (battery, gas, emergency brake) and the A/C, heater blower quit working all at the same time. Then today when driving and stopped at a light the rpms were going up and down and my voltage was reading 0. Made it to my destination when I left the vehicle started and voltage registered mid stream and got me home, but once driving rpms were jumping and voltage was back down to 0 and when I went to roll up windows the car completely died and won't even turn over now. No Juice. I just got the vehicle back from having the tranny replaced (2,300.00) so I can't afford to take it back into another shop. I took the dash off and switched the screw in the back of the speedometer for the 02 sensor, but the light is still on. Somebody please help. Aslo checked fuses and they look fine. Thanks for any help. Tambra
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Wednesday, April 19th, 2006 AT 10:06 AM

9 Replies

Tiny
JMAN0033
  • MEMBER
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.
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Wednesday, April 26th, 2006 AT 10:11 PM
Tiny
JMAN0033
  • MEMBER
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.
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Wednesday, April 26th, 2006 AT 10:16 PM
Tiny
JMAN0033
  • MEMBER
O2 sensor light stays on until started
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Wednesday, April 26th, 2006 AT 10:18 PM
Tiny
EMERALDTF
  • MEMBER
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
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Thursday, April 27th, 2006 AT 7:46 AM
Tiny
JMAN0033
  • MEMBER
Do you have a multi meter? (Voltage reader)
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Thursday, April 27th, 2006 AT 10:37 PM
Tiny
EMERALDTF
  • MEMBER
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
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Friday, April 28th, 2006 AT 8:36 AM
Tiny
EMERALDTF
  • MEMBER
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
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Monday, May 1st, 2006 AT 1:15 PM
Tiny
KENM
  • MEMBER
Its a charging problem, when revcounter goes up + down like that it can be a loose belt or alternator on its way out. Ken
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Monday, May 8th, 2006 AT 1:16 PM
Tiny
EMERALDTF
  • MEMBER
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
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Monday, May 8th, 2006 AT 2:00 PM

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