outbackski

Hi Guys
I have a 95 grand cherokee limited 6cl,and I have check engine light on and I disconnected the battery to see if it would clear computer,but now my ABS light is on and my message centre says CHECK BATTERY.
can any one please help.I am in Vail Colorado.
cheers
marc

ol"blue

Welcome to CF. To clear any stored codes yourself, you need to touch the disconnected battery cables together for 15 seconds. Otherwise any stored codes will disappear after about 50 key starts unless the problem reoccurs.
You can check your own codes by turning the key from the On position to the Off position four times within 5 seconds, stopping in the On position. If you have the digital speedometer, it will begin to show a series of 2 digit numbers. That is your codes. 12 is Battery recently disconnected, 55 is End of codes/No codes stored.
This is a list of codes and an explanation for different types/years of Jeeps. >->http://go.jeep-xj.info/HowtoECUcodes.htm

outbackski

Hi
Thanx for your reply ,I will try that today.
and let you know.
mine does not have the digital display.
marc

outbackski

Hi
It appears,that my alternator is not working,it was making a grinding noise,I have pulled it out and is no good.would that be the reason that the check engine light was on...
marc

kjc

I sense a new/rebuilt alternator in your near future.
New ones are pretty inexpensive, but you could look into having it rebuilt. The alt. for my Lincoln was $118 for a new one, took it to a local alt/starter shop and they made it like NEW inside & out for $49
Sounds like you figured out the problem tho.. be sure to clean up those battery posts/terminals while they're off.

outbackski

Hi KJC
Thanx,I am stuck so have to go to NAPA and pay $125.00 for remanufactured one and I will clean those terminals.will see if check engine light goes out when i replace the unit tomorrow.thanx again this forum is great.
marc

Bustedback

You most likely had a code 41 (alt field not switching properly), I had the same issue with my 95 when the alternator went out.

outbackski

Hi Guy's
yep,replaced the alternator today,and everything is fixed,no check engine light on.
one problem I had was that the battery was flat and the security system would not let me jump start the car,I had to charge the battery..
what do you do to jump start these grand cherokees ?
marc

kjc

I'd suggest you replace the battery.. it's possible for a bad battery to kill an alternator. If it's 4-5 years old, it's due.
Jump start? Run jumper cables from another cars battery to yours.. red to red, black to black. (that's positive to positive, negative to negative)

outbackski

yea.I tried that,but my jeep has a security system and when jump leads are attached the security system light flashes on the dash,I tried locking and unlocking ,but nothing worked.
I charged battery and it took the charge and is in the car and everything works fine...

ol"blue

When I had the '97 it had the security system, and it sat in the garage in Tenn while I went to Mich for longer than expected. Upon return the battery was dead. I didn't try jumping it with the WJ, I just put a battery charger on it until it was fully charged. It started up with no issues. Then I took it in for a test, and had it replaced, as it was 5 years old. I don't like being stranded, or fooling with old batteries.
It seems though, that yours should have taken a jump.

outbackski

is it possible to jump start the grand cherokee with this security system ?