Just dies while driving, then "no bUS" and engine light
Hi, I have a 99 dodge ram van with 70K miles. It's a conversion with an TV/VCR and extra lights, etc. We bought it from my in laws when they were ready to trade it in and haven't had any problems with it until now. Today for the third time I'll be driving usually around 45mph and the engine just dies. All the gauges read in normal ranges before it dies. I pull off on the shoulder (thank goodness it always dies where there is a shoulder) turn off the ignition and wait. If I immediately try to crank it over again it turns over, but won't start and all the gauges don't work and the digital odometer says "no bUS" and the engine lights come on. If i let it sit for a few minutes before I try to crank it, then it starts right back up just like there was never a problem at all. I know the "no bUS" means the computer system isn't communicating, but I'm not sure if that is the root of my problem or not. I've taken it to our regular mechanic with no luck, and I'd really rather not spend the money on the dealer if I don't have to. Any ideas? Thanks in advance!
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Hi guys thanks for all the ideas. Just wanted to mention it died today half way down my street going 25mph. Is there any way to check for trouble codes wthout a scanner? BTW, we've had a lot of static electricity in the van for the last few months and some problems with the conversion lights and tv/vcr. Could some electrical short be causing the problem? Do these clues help or bring anyone to a new conclusion?
I have the same problem -- it causes my engine to stall while driving. It happens randomly once the engine reaches peak operating temp. I usually get it going again by pushing downon the third cluster plug on the PCM located (what a great design idea!?!?) right above the hot engine. Sometimes I have to wait till the temp drops a little. I turn the key to RUN position then push down or wiggle the cluster plug until I hear the rely click in the fuse box. Then it usually starts. I cannot seem to figure out if it's a bad connection on the plug (seems like a hundred wires!) or in the receptacle on the PCM. Sometimes it won't happen for a day or two but it always dies when I hit slow traffic. I've cleaned the contacts on both sides with no change.
Another marveous MOPAR design flaw.
Hello all. A good friend of mine is having the same problem with his 2000 dodge ram 3500. Starts and runs untill it warms up,then dies and won't start. It will crank,but no spark.I replaced the crank sensor,coil , dist.pick-up and ultimately the E.C.M. Got a call this morning that it died again.Does this van have a cam sesnor? and could this be the problem? I am also wondering if it could be a ground problem.
Yes, inside the distributor, sometimes it's called a pick-up coil.
A NO BUSS message means there's been a loss of communication between the ECM and the dash cluster. For 99.99% of these situations, the problem is either a bad ECM, a bad cluster, or a problem with the wiring between the ECM and the cluster. A bad cluster won't cause stalling. If the ECM has been replaced then you're down to a wiring issue.
Thx for the input. I found a ground strap from the engine to the firewall that was not secure,and had hoped that was it but no cigar! I will take a hemostat and jiggle wires one by one at the plugs. If anyone has any other ideas , please post as soon as possible. I am SERIOUSLY FRUSTRATED.....lol