Originally Posted by Muaddib420
2000 XJ 4.0 stock. Weak cranking last week. It started but not in the quick explosive way it normally does. Then drove home from work and on shut down tried to immediately restart. No cranking.
I assumed it was battery (stupid of me) and went ahead and bought a new one and put it in. Cranked great again. Drove around a week no problems.
Today it sounded "weak" on start up again. Alternator right? I plan on taking it out and testing it at local parts store before purchasing new one.
This would be your best thing to start with! Also check ALL or the grounding points. Not just at the battery. But the one one your oil dipstick and the one from the head to the firewall.
What's the best way to take out. From the bottom or removing battery and doing it from the top? I'm leaning towards from the top as removing the battery seems easier. Anybody with experience with this?
BTW no check engine lights and no other symptoms noticeable besides weak cranking. I have not done battery removal test while running. Read conflicting advice on that and don't want to fry my electronics.
You never want to do this on any vehicle that has all the electronics. It's fine to do it on the older vehicles that do not have a computer that controls everything.
Keep us updated on your outcome. So, If you still are having problems we can work from there.
No Info, No Help!
I had a real bad and annoying sound come from my passenger seat also. But once I broke up with my girl friend it's a LOT better...
1992 XJ 4X4 -- Stolen and found stripped.
1994 XJ 4X4 -- T-Boned By a lady running a red light.
1995 XJ 4X4 -- Rolled over 3 time while off road.
1998 XJ 4X4 -- Still have and going strong
Last edited by RTorrez1; 07-31-2012 at 04:24 PM.