Author Topic: 88 RC 318 Keeps cutting out, now I have ignition problem  (Read 922 times)

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Offline dartman76

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88 RC 318 Keeps cutting out, now I have ignition problem
« on: September 28, 2012, 08:29:40 PM »
Ihave been having trouble with this for a while now, Can be driving and engine just quits. Acts like its not getting fuel, pour fuel in the throttle body and it will run until its gone. Wait a while some times only a minute other times over an hour and it will start right up. Changed out the fuel pump, fuel regulator and injectors and still have the same problem. Today it seams the ignition quit, no spark, cant find the ignition module to test it. Anybody got any clues for me?

Offline Captain Obvious

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #1 on: September 28, 2012, 08:37:15 PM »
Its built into the computer behind battery.

Need to research or ask more about how this system works, as i can tell there is much assuming going on.

Fuel and ignition isnt simply powered by key. More complex. Automatic shut down system.


Distributor hall effect sensor sends a rpm signal to computer. Computer controls the grounds for these circuits. Not consyant chassis ground. Computer also tells asd relay on fender to send positive power to these devices, not controlled by simple keyed hot.

So, relay may be bad, harness may be bad, hall effect, or computer.

http://ramchargercentral.com/miscellaneous/tbi-156759/

http://ramchargercentral.com/technical-discussion/dodge-tbi-info-(work-in-progress)/

http://ramchargercentral.com/vehicle-help/confirmed-fixes-cheat-sheet/
« Last Edit: September 28, 2012, 08:42:34 PM by Captain Obvious »

Offline DODGEBOYS

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #2 on: September 30, 2012, 07:47:09 AM »
most of the time its the hall effect [ Dist pickup ] and it can be tested before replacement


http://www.ehow.com/how_7640228_test-hall-effect-sensors.html
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Offline dartman76

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #3 on: October 15, 2012, 08:45:26 PM »
Still having same problems, I have gone through the wiring harness and can find no cuts, breaks or corrosion spots,  Have replaced the ECM, does not have an ASD or Halls effect sensor. Shutting off can happen at any time. park the truck come back and it doesant start, driving on a flat road, sitting at a stop sign. Sometimes I can drive it for 40 minutes or more before it does it other times its after 5 minutes.

Offline Captain Obvious

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #4 on: October 15, 2012, 08:49:14 PM »
If its fuel injected, it certainly does have both.

Go look again.

If they were missing you wouldnt start.

Offline powerwagon78

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #5 on: October 16, 2012, 11:53:28 AM »
Your ASD will be on one of the inner fenders, and it controls voltage to fuel pump, injectors, and coil...if its the relay, you will be able to jump it across and it will start

Jeremy
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Offline Captain Obvious

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #6 on: October 16, 2012, 12:53:53 PM »
The hall effect is inside the distributor. Has round 3 wire plug hanging off and a few screws in the base.

Offline chippqua60

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #7 on: November 4, 2012, 12:26:11 PM »
 had this problem have someone move harness at distributor plug while cranking   dodge knew about this problem just not enough complaints for service notice   replaced harness plug no problems since!

Offline mrick36

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #8 on: June 23, 2015, 08:10:37 PM »
Sorry to bring this post back up, but it sounds like my problem in:
http://ramchargercentral.com/vehicle-help/engine-stalls-low-oil-pressure/msg2759729/#msg2759729

And when I changed the oil sending unit, it all quit, for 4 years.  Started happening again a couple weeks ago.  Changed the osu again and it did it a week later.  Shows great oil pressure though!

Could be that Halls Effect! It is only a couple inches from the osu.

Mine is running fine right now.  But I'll check the HE in the morning and let you guys know how she does then!

(NO! I haven't had the valves adjusted yet!.....I AIN'T GOT THA FUNDS!)
1988 Ramcharger AD100, 318cid, 2WD-Auto, only 116,000 miles(ha...doubt that!)

Offline treeslayer2003

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #9 on: June 23, 2015, 08:44:33 PM »
Sorry to bring this post back up, but it sounds like my problem in:
http://ramchargercentral.com/vehicle-help/engine-stalls-low-oil-pressure/msg2759729/#msg2759729

And when I changed the oil sending unit, it all quit, for 4 years.  Started happening again a couple weeks ago.  Changed the osu again and it did it a week later.  Shows great oil pressure though!

Could be that Halls Effect! It is only a couple inches from the osu.

Mine is running fine right now.  But I'll check the HE in the morning and let you guys know how she does then!

(NO! I haven't had the valves adjusted yet!.....I AIN'T GOT THA FUNDS!)

you are joking i hope...........there is no valve adjustment
87 power ram 250, 88 RC, 84 RC, 78 PW, 73 D 150, 86 D 150, many parts trucks

Offline mrick36

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #10 on: June 25, 2015, 09:24:28 AM »
Hey! Do I look like a mechanic to you? ::)

I come here to find out answers so I can fix things when I can't afford to have a REAL MAN fix it.  Some things are easy to fix, especially since you can camp out inside the engine compartment to do it.

My ideal situation is to leave it with a good mechanic until it is completely restored.  But my job is so inconsistent I can never do that.  And right now, it is my only vehicle.  So I do what I can.  And right now I am so broke I can't afford my own thread!

But, I bet I could figure out a way to adjust those suckers!

This morning I started her up, took off the air cleaner, and reached back to grab the Hall's Effect plug.  The second my fingers hit the plug, the truck totally shut off and I heard a couple clicks at the fender panel.  I moved it around a bit and continued to hear the clicking.  I pushed the plug as if I was just plugging it in and it didn't seem like it moved any.  So I unplugged it, plugged it back up and started the truck again.  This time I couldn't make the truck die if I hit it with a baseball bat.  Moved around both ends of the wiring, twisted, thumped, and shook the damn thing and the truck just kept running.  So I'm guessing it was just slightly loose and I tightened it up again?  I don't know!

Maybe it's just the loose connection between the seat and the steering wheel! ;D
1988 Ramcharger AD100, 318cid, 2WD-Auto, only 116,000 miles(ha...doubt that!)

Offline treeslayer2003

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #11 on: June 25, 2015, 03:18:45 PM »
ok mrick. on the valves......the LA blocks do not have a provision for valve adjustment like a chevy. they rely on the hydraulic lifters to take care of that just as most fords. so don't let some grease monkey take advantage of you by charging you to adjust the valves. i really did think you were joking, sorry.

on the hall effect sensor, the first truck we ever got with fuel injection about drove us nuts. intermittent no start, shut off on the road.......we had it at the dealer several times and they always said it was fine. guess what? that plug your talking about was the same, wiggle it and it would shut off. i replaced it with a mopar replacement and never had any more trouble with it. i advise you to replace it, its easy and not very pricey.

we are here because we like to help folks, ask away, i'll try and help and i'm sure others will as well.
87 power ram 250, 88 RC, 84 RC, 78 PW, 73 D 150, 86 D 150, many parts trucks

Offline mrick36

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Re: 88 RC 318 Keeps cutting out, now I have ignition problem
« Reply #12 on: June 25, 2015, 07:20:04 PM »
Not a problem with the joking.  I am making fun of myself all the time, but in a humorous way.  A lack of knowledge is normal when you've never been taught.  That is why I bought the service manual. So, when I get under there and say, "Oh, I wonder what this little doohickey does?", I can learn how about that doohickey and replace it after I break it!  Life is a learning process!

After I replace the hall effect/coil pickup, maybe I can figure out how to stop the oil from getting into the TB.

And I bought me a new valve adjustment tool the other day..........see attachment.
1988 Ramcharger AD100, 318cid, 2WD-Auto, only 116,000 miles(ha...doubt that!)