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1990 dodge d150 ignition problems

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  #1  
Old 05-16-2008, 10:38 AM
mikey821 mikey821 is offline
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Default 1990 dodge d150 ignition problems

Hi folks,
I am new so be patient. my problem is: I just bought this dodge ram d150 and i'm already having problems. the truck will be going down the road fine when it will just shut off.I try to start it and it will not start. I'll try a few times then all of a sudden it will start I took this truck to the mechanic and they said that the distributor was at fault. so after 600.00 bucks I get the truck back and it does the same thing. I check for spark at the plug no spark,I check for spark at the coil no spark. ten minutes later the truck will start and run fine. what can I check next? asd,pcm? where does the power to the coil come from? is it routed through the powertrain control module? or does it come directly from the battery through another relay? Help plz. I like this truck but am not going to sink a fortune in it
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  #2  
Old 05-16-2008, 01:13 PM
driveramsII driveramsII is offline
 
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Default RE: 1990 dodge d150 ignition problems

Check your codes... it should tell ya where to look

Turn key "on"-"off"-"on"-"off"-"on" then count the flashes of the check engine light... "on" is not start
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  #3  
Old 05-16-2008, 08:23 PM
moparborn moparborn is offline
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Default RE: 1990 dodge d150 ignition problems

First I would go back to the mechanic and complain,for that kind of money you should be having no problems.
Check and clean all related connections,maybe some dielectric grease to.
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  #4  
Old 05-17-2008, 04:54 AM
mikey821 mikey821 is offline
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Default RE: 1990 dodge d150 ignition problems

Thanks guys for the reply.
I went back to the mechanic its in the shop again.originally he
said that there was a problem with the hall effect pickup. but my
thing is if there is no spark to the distributor then the hall effect
pickup would show a code right?.I think instead tracking the problem he went for the first trouble code and replaced the
distributor. these guys are usually good at the electronics.
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  #5  
Old 05-17-2008, 10:01 AM
nemesis_SS nemesis_SS is offline
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Default RE: 1990 dodge d150 ignition problems

im fairly certain that a bad hall effect sensor should throw a code 11 (no crank/ignition reference signal detected during engine cranking)

by the way some shop manuals give a different explanation for that code.

anyhow just do the old onoffonoffonoffflash check.

and like moparborn says, 600 bucksis real money.
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  #6  
Old 05-17-2008, 10:09 AM
nemesis_SS nemesis_SS is offline
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Default RE: 1990 dodge d150 ignition problems

ive googled you problem and somebody on another forum had a cranky engine which started or didnt start at random. he changeda hall effect sensor
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  #7  
Old 05-17-2008, 12:48 PM
mikey821 mikey821 is offline
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Default RE: 1990 dodge d150 ignition problems

Thanks guys I really appreciate the input. I won't get the truck back until mon or so I'll let you know it was driving me crazy.
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  #8  
Old 05-20-2008, 07:49 AM
Jacob1 Jacob1 is offline
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Default RE: 1990 dodge d150 ignition problems

My truck did this to where it would start only in the afternoon around 3:00, try in the morning and it would just crank. Ended up being the computer was fried. Also since the computer was screwed, it wouldn't show any codes, the conventional way and with a scanner.
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  #9  
Old 05-23-2008, 05:39 AM
mikey821 mikey821 is offline
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Default RE: 1990 dodge d150 ignition problems

well, I got the truck back because they cant reproduce the problem. i went to the store and it stalled. I'm getting ready to send it to the crusherim gonna try replacing the cran position sensor and already replaced the coil I'll let you know
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  #10  
Old 05-23-2008, 09:13 AM
dragonmaster69 dragonmaster69 is offline
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Default RE: 1990 dodge d150 ignition problems

hopefully you got some of your money back or they didnt charge you for this time in the shop. if they did they are bad people because they didnt fix it right th first time.
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  #11  
Old 05-23-2008, 03:20 PM
mikey821 mikey821 is offline
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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 mikey821 is offline
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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 Lead Head is offline
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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 tom01973 is offline
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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 mikey821 is offline
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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 nemesis_SS is offline
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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 mikey821 is offline
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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 mikey821 is offline
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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 Sixtysixdeuce is offline
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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 mikey821 is offline
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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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Old 08-23-2008, 12:30 PM
 
 
 
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Tags
1990, 91, codes, crank, crankshaft, d150, dodge, ignition, needed, position, problem, replacing, sensor, trouble, truck

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