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1990 dodge d150 ignition problems

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  #11  
Old 05-23-2008, 03:20 PM
mikey821
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Default RE: 1990 dodge d150 ignition problems

I changed the coil spark is good. now I noticed when I was looking at the tbi that one injector was s[rayng alot more than the other so I took out and sprayed it with wd40.and I noticed that the fuel pressure regulator was hooked up to a port with no vacumn at idle. so I hooked it up to one that did,has not stalled since?so far, can somebody tell me where it is hooked up on theirs?
 
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  #12  
Old 05-23-2008, 08:27 PM
mikey821
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Default RE: 1990 dodge d150 ignition problems

I don't Believe it running fine this morning now nothing
Arrgh!!!!!!!!! no spark no gas I'm about to give up.
 
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  #13  
Old 05-27-2008, 11:51 AM
Lead Head
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Default RE: 1990 dodge d150 ignition problems

No spark and no gas would point to the camshaft position sensor in the distributor, or a bad connection to that sensor. While I'm more familiar with fords, the general thing with fuel injection from any maker, is that the computer won't fire the sparkplugs or the fuel injectors until a signal is detected from the camshaft or crankshaft position sensor
 
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  #14  
Old 05-28-2008, 09:35 AM
tom01973
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Default RE: 1990 dodge d150 ignition problems

check the asd relay.it controls power to the fuel pump relay and grounds the ignition coil as well when they go bad it usually acts like this
 
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  #15  
Old 05-29-2008, 08:00 AM
mikey821
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Default RE: 1990 dodge d150 ignition problems

I've checked just about everything asd new, wot relays are good
jumped out the ignition switch,new distributor, with new hall effect sensor. its back at the shop now. hopefully they won't say that they can't reproduce the problem it stalled and would'nt start on the way there. after about 10 or so tries it started.I think your right about the computer. its probably screwed. I'll keep you guys updated.
 
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  #16  
Old 05-29-2008, 07:57 PM
nemesis_SS
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Default RE: 1990 dodge d150 ignition problems

wats left other then the ecu
 
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  #17  
Old 05-30-2008, 11:20 AM
mikey821
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Default RE: 1990 dodge d150 ignition problems

hey guys, i went to the shop to check on progress they could'nt
recreate the problem again so I waited and it stalled and died right there. the mechanic verified no spark no gas and narrowed it down to a splice or the ecu one pin on the ecu is not powering up hopefully this is the end I'll let you know with pics of my truck
project thanks to all of you for your help.
mike
 
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  #18  
Old 07-12-2008, 10:40 AM
mikey821
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Default RE: 1990 dodge d150 ignition problems

this truck is nuts the mechanic replaced the ecm nine times all the units except two ran for awhile then died,the stupidest thing is this asd relay. I can't jump it out,won't run without it. I'm going to give up and send this piece of crap to the crusher.Now waiting on one more computer from allcomputer resources.if this doesn't do it,finding another truck not a dodge. Sorry guys
MIKE
 
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  #19  
Old 07-12-2008, 11:58 AM
Sixtysixdeuce
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Default RE: 1990 dodge d150 ignition problems

The early magnums had a problem with the crank sensor wiresrubbing through near the firewall. Check that before you scrap your vehicle.
 
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  #20  
Old 08-23-2008, 12:30 PM
mikey821
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hey guys my truck is finally running decent,(keeping my fingers crossed)I took it to another mechanic that found a bad ground.computer was fried so replaced that and now is running fine. the distributor that the other mechanic put in was also bad everytime they wiggled the pig tail the asd would shut the motor down.phew. i'll post pics soon.
I appreciate all the help and support
Thanks Mike
 
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