Car: 96' Isuzu rodeo V6 3.2L engine (automatic transmission)
Problem: It all started with the a/c. When one wanted to turn on the ac no air would come out from the vents.
A day later the check engine and battery light came on the dash. We noticed that the volt reading on the dash was by 8. That being the case, both the alternator and battery were changed. Even with the new alternator and battery in place the volt reading on the dash was barely 10. So far we have taken the alternator to 2 different places and they tell us that its good, but the battery is being drained dead. If the problem is due to burned links how does one go about finding this out?
as for the ac not blowing any air, what could the answer be? ( fan clutch?)
is there a correlation between the ac problem and the battery being drained , or do advance auto part workers not know how to test alternators, and THATS the problem?
sorry for the long post, your responses will be greatly apreciated
2006-10-28 06:44:29 · 10 answers · asked by L P 2 in Cars & Transportation ➔ Maintenance & Repairs
one more thing in regards to the ac.... as stated before the ac doesnt blow ANY air, but when the rpms reached more than 2000 it would blow. However, it no longer does that now.
2006-10-28 06:49:51 · update #1
how could one check the alternator while it's in the car if the car cant start up ... could a voltmeter still be used in this scenario?
2006-10-28 08:46:26 · update #2
I own one of these and had the same problem. Being a mechanic, I had to figure it out myself. The fan does not blow until the alternator is putting out more than battery voltage (charging). I've also had alternator problems requiring three warranty replacement alternators. You probably need to get another new alternator. By the way, with the engine running, you should have 13.4 to 14.4 volts at the battery.
2006-11-04 15:42:10 · answer #1 · answered by MikeyDo 4 · 0⤊ 0⤋
Usually a battery drain like that is caused by an internal short in the alternator, it will still charge the vehicle while running but it will also drain the battery when sitting. Does the battery have enough cca for the vehicle, there are several other possiblities with the electrical system on that vehicle, if the blower motor doesn't blow at all check fuses first, and you should check them with a test light, in a worst case senario it could be a body ground problem which will take some testing or a new blower motor.
2006-11-04 14:20:50 · answer #2 · answered by G L 1 · 0⤊ 0⤋
You need to check your blower motor, it sounds like it just finally died. More than likely the blower motor going out and the other problems listed are coincidence. The problem with your charging system is a tough one without lookin at it personally. I would get a multimeter or voltmeter and check your battery at the terminals while it is running and see if the voltage reading is close to 14.5. Other than that I would check your fusible links, wiring, and make sure all connections are tight. You can get you a repair manual at a auto parts store too help you with this if you want. They have a lot info you can use to help. Good luck.
2006-10-28 07:07:12 · answer #3 · answered by brian m 2 · 0⤊ 0⤋
check the blower motor it could be shorted and will drain the battery. the voltmeter is only telling you the battery condition.detach the blower connection and check voltage drain for confirmation before costly removal
In India we will open and detach the +ve terminal cable from the battery if the car switches off youre alternator is blown.make sure its not touching any part of the vehicle.
Am not liable for any damages due to this advice
2006-11-04 18:10:11 · answer #4 · answered by misra.sharad 1 · 0⤊ 0⤋
To check the alt still on the car take a metal screwdriver and touch the back side of the alt, if it magnetizes to it then it is still good.
As far as your A/C sounds like a short in the blower motor, and yes that could cause the battery to drain on some occasions. Hope it helps
2006-11-04 17:06:17 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I am inclined to think the ac compressor may be going (seizing up) as mentioned by another and that this is causing problem. As it gets up over 2000 rpm's your are then turning things at close to the proper speed. under that and the system is straining to keep going. If your belts dont turn at proper speed you will have, 1) battery drainage ie alternator not charging. 2 No AC ie AC compressor sluggish or seized (causing 1st problem)
2006-11-02 14:46:18 · answer #6 · answered by friendly advice from maine 5 · 0⤊ 0⤋
it sounds to me like the blower motor is defective. but there are other issues too. possiblly the blenddoors are not opening and that could be bad vacuum lines but for sur e you have a draw on the battery somewhere
that is an electrical issue and diagnostics are costly. also you might check the ac switch in the dash
hard to say when you can not see the vehicle
2006-11-04 14:54:42 · answer #7 · answered by jack 2 · 0⤊ 0⤋
Sounds like either a belt issue. i.e. No belt. Or Not enough tension on a belt and your pully wheels are just slipping and not catching the belt. NOTE: Make sure you install the alternator totally straight with no angle. If your alternator is just a hair off it doesn't keep the belt flow in line making it slip off the pullies and also wearing out the bearings/brushes in your alternator.
You might want to check some relays also.
2006-10-28 06:49:13 · answer #8 · answered by Anonymous · 0⤊ 0⤋
unplug air ac from ac check blower with heater. sounds like clutch on ac is getting ready to seize up
2006-10-28 06:56:53 · answer #9 · answered by Larry m 6 · 0⤊ 0⤋
It appears you have answered your own question. The AC is the problem. Check it out.
2006-11-01 15:46:54 · answer #10 · answered by cal72036 2 · 0⤊ 0⤋