PeachParts Mercedes-Benz Forum - View Single Post

190D22 · #4 07-26-2002, 01:09 AM

hmm that doesn't seem right. That ford diesel should have gotten yours going nicely... When my battery was very weak, before I got it replaced, I had to jump start my 190D off of my grand cherokee. My battery had enough to preheat, but not enough to crank. So what I did was preheat off of my battery and then start from the jeep when it was running. The connections were + on both batteries, - on the jeep battery, and a nice place on the engine on the 190 was my - for it. So I left the +'s connected, and had my dad standby with the - and when the preheat was done he connected the cable to my engine and I immediately cranked and she started right up. Had do this at least 3 times before I finally replaced the battery.

My reasoning for the connections I made. Last connection away from the dead battery because dead batteries sometime leak hydrogen, extremely explosive, and the spark of the last connection would make your car the next hindenburg! The connection directly to the engine for the - is because duh that's the common and since we're trying to get the starter going the connection is about as close as possible to the starter so the current has less to flow through to get to the starter. But that's not a big deal.

I can't tell you why yours didn't just start right up. Especially with the truck being the beast it is power wise, two batteries and all. Maybe somehow that your battery being so dead that it was being a current draw and wasn't allowing the starter to get enough power to crank the engine. I don't know. But it's good you got her going again!