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loss of acceleration

Yahoo Message Number: 8846
1997 Intrigue 325 Cummins 6 speed Allison When driving with my headlights on, I loose complete acceleration either from a dead stop or on a steep incline. When I turn the headlights off, I get instant acceleration. I can immediately turn the lights back on and the problem may not occur again for 15 t0 30 minutes. The problem does not occur when the headlights are off. Any ideas.

Re: loss of acceleration

Reply #1 –
Yahoo Message Number: 8850
Hi Seinbender,

It appears that a loose connection (either +12 vdc or ground) is causing a drop in voltage when the headlights are turned on. A look at the wiring diagrams along with measuring voltages at specific locations is a start. Most all interconnects have several inline plugs connecting one wiring harness to another. Most all switches are connected via a plug. Your description points to interconnects.
Fred Kovol

loss of acceleration

Reply #2 –
Yahoo Message Number: 8892
1997 Intigue, 325 cuimmins 6 speed allison When my headlights are on I intermittently loose acceration. When I swithch the headlights off,I get instant acceleration. I can turn the headlights back on immediately and the problem may not occur again for 15 to 20 minutes and then reoccur. This is a constant problem. Any ideas?

Re: loss of acceleration

Reply #3 –
Yahoo Message Number: 8894
I'll bet it's poor ground up in the font end of the coach. Would start with where headlights are grounded. If you meter* that ground point using a KNOWN GOOD battery return ( a ground at or near the battery neg) point as a referance, I'm willing to bet you will read more than a few DC volts on the

ground. (* lights on/engine running) That voltage may be causing a voltage offset in the ECM enough to give you strange conditions.
If you do see a small voltage (grreater then a few 10ths of a volt) check and clean**the connection for the 'master' ground wire or connection for that ground point. (** with power/engine off)

Good Luck

Jim Cook

2002 Intrigue #11446

(sorry. I'm without Mr. Bill's spell checker! I will not reload MS Office again!!!!!)

ps: Just making sure all the common ground connections and the ground bar is tight may fix your problem, IE just a screwdriver may be all that is needed.