I was attempting to jump start another vehicle with my 2000 TJ and the engine died while running, and now will not re-start. Any ideas? Do you suppose this would produce a code that could be read by a common code reader? All electrical components (lights, radio, etc.) still function and the engine turns over normally, but will not start. Any and all help will be appreciated.
07-07-2006 11:42 PM
Read this thread, and weep. It is the first I have heard of this as well.
Please let us know what your situation is, this has a lot of us baffled. I even asked the wife if she has used her jumper cables yet, and she told me she has, with no ill effects. This is important to know, once and for all. You would think that using the winch would produce these electrical spikes as well. Perhaps it is all in how you hook up the batteries, ie, hooking up the ground first, and then positive, I don't know.
07-08-2006 09:20 PM
Well, since it has happened to two different people in as many days, it seems that it may be true. I'm investigating...
07-09-2006 11:59 AM
According to the 04 Wrangler Owners Manual, there is nothing wrong with jump starting another vehicle, just follow the hook up process and release process as recommended. Do not touch vehicles together during this proceedure, or the ends of the jumper cables together. Also the final connection of the negative side should be made to the frame or body of the vehicle. Pretty much basic 101 jump starting stuff. And it should be disconnected in the reverse order. I did run across many articles of motorcycles getting their starting systems cooked by getting jumped from a car battery. One other thing, make sure all electrical things are turned off in both vehicles, such as fans, lights, radio, etc.
07-09-2006 01:16 PM
Well, I ran into the guy that owns the Jeep dealership at the grocery store. He said that you really should never jump start anything with these newer vehicles with the cpus.
According to him, Grand Cherokees, Cherokees, and Wranglers (TJs) are especially susceptable to causing problems on the Jeep line-up. That's pretty much the whole Jeep line up until recenty... He said it can possibly void some warranty, but he did not know that it wasn't in the owners manual that you shouldn't do it.
I've known this man my whole life, so I don't think he'd make it up. He's a car salesman (owns the dealership actually), so you can trust him as far as any car salesman, I guess. But I don't see any benefit for him to tell it if it isn't true.
07-09-2006 04:09 PM
If there is the slightest chance of messing up the CPU, I would think that buying another battery would be much cheaper, and certainly a lot less hassle. You make a very good point amerijeep, and as you said, I don't think your salesman would lie about this. I for one, am convinced to take the jumper cables out of the Jeep. Especially after two people have expressed problems after jump starting someone. Sure do appreciate the heads up on this!!!!!!!!!