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dodge d-100 wont stay running
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sonier
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Aug 28, 2009, 7:33 AM
Post #1 of 25
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dodge d-100 wont stay running
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1989
dodge ram D-100
318/5.2l
4wd
TBI
started rough then got worse over few hours till wont start any more
lack of power, possibly lost few piston while it was running.
I have fuel delivery into the intake
but now will turn over fine but wont crank, sounds if only one piston is sparking then dying
Transmission was replaced, have a transfer case leak so fluid is low yes but shifts into 4low only way was able to move it.
cap and rotor was replaced and have a spare brain if you think its worth it too replace as well.
thank you sonier
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Hammer Time
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Aug 28, 2009, 7:37 AM
Post #2 of 25
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Re: dodge d-100 wont stay running
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All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
4) If all of these things check good, then you would need to do a complete compression test.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 7:44 AM
Post #3 of 25
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Re: dodge d-100 wont stay running
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i didnt have this problem, until i got back after a week vacation, i had a very rough idle, then i replaced the aluminum fuel lines with rubber ones, i had issues after i replaced the tranny because my speedometer mileage cable wouldnt link up to the transmission i installed. the gas tank was in the way, i havnt had time to tap and drill some holes to add this new tank underneath the rear of my bed, but going to. so in the meantime im running the tank out of ht ebed of truck with 3/8 ID hosing for return and flow. could this be where my ussue would be? BTW i have a spare 1989 dodge ramcharger so i have a replacemnt part for everything except radiator to front end
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Hammer Time
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Aug 28, 2009, 7:48 AM
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Re: dodge d-100 wont stay running
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You'll have to check your fuel pressure to find out but it could be the source of your problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 7:51 AM
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Re: dodge d-100 wont stay running
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thankyou, time to go get dirty lol i dont have any spare funds right now so im just gona have to do trial and error :(
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Hammer Time
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Aug 28, 2009, 7:52 AM
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Re: dodge d-100 wont stay running
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Just don't throw parts at it without testing. That's even more expensive.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 8:07 AM
Post #7 of 25
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Re: dodge d-100 wont stay running
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ok well i did a old trick, since its TBI its similiar to a carb and i use to have batery issues so too make it start easy id pour some gas into the tbi to prime it and it crank right up without dying. well i did that and it wouldnt make a difference no matter what. so fuel delivery is not the problem.
this is a rebuilt engine 30k miles, when i replaced the tranny manual turning the flex plate was a pita, so it hass a lot of compression a lot. compared ot my junker truck with 160k miles that flex plate turned fairly easly.
so i know i got fuel and compression so i dont have spark,
any advice at this point?
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Hammer Time
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Aug 28, 2009, 8:11 AM
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Re: dodge d-100 wont stay running
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Don't assume you have compression that way. You need to check spark and do a compression test if you do have spark.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 8:14 AM
Post #9 of 25
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any way to do a poor man back yard spark plug check?, lol i know from logging and chainsaws you can pull the plug and crank it and watch if its sparking but somin tells me not so good idea for a bigger engine lol
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sonier
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Aug 28, 2009, 8:56 AM
Post #10 of 25
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Re: dodge d-100 wont stay running
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okie i checked for spark using screwdriver trick i have no sparks, so i checked for the rotor if its spinning when engine does so i dont have broke timing chain. so i know know i have no spark. so im gona replace cap and rotors with new ones might help lol. replace plugs and wires.
ty for your help :)
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Hammer Time
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Aug 28, 2009, 9:04 AM
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Re: dodge d-100 wont stay running
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You can buy an adjustable spark tester for about $4
You might want to check for injector pulse first. If you have no injector pulse then check for power on the +side of the coil and one side of the injector with the key first turned on.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Aug 28, 2009, 9:05 AM)
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sonier
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Aug 28, 2009, 9:27 AM
Post #12 of 25
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im lookin threw my chiltons manual and i cannot identify te injector pulse, i cant find it in my manual either. i found my coil easly all wire seem attached properly ill check it wiht my voltmeter but the injector pulse still has me stuck.
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Hammer Time
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Aug 28, 2009, 9:54 AM
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Re: dodge d-100 wont stay running
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Injector pulse is the electronic signal that operates the injectors.
You use a little bulb called a noid light and you plug it into an injector plug and crank the engine. If the light flashes, you have power and pulse to the injectors.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 10:03 AM
Post #14 of 25
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now if i can watch fuel being dumped into the intake would this still cause the issue? the engine is receiving gas just no spark but ill see bout getting this noid light ty for the pic
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Hammer Time
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Aug 28, 2009, 10:41 AM
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Re: dodge d-100 wont stay running
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If you can see the injectors actually spray when cranking, that would indicate injector pulse is present.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 11:18 AM
Post #16 of 25
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There spraying alright, but once again i tryted to get sparks no matter what i did it never sparked i can hold the bare end of the wire and not feel anything, even touch the block in one hand bare wire in other. Since i had the parts on hand i replaced the comp, with no sucess to helping, i replaced the coil as well no sucess. im running out of ideas here,
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Hammer Time
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Aug 28, 2009, 11:32 AM
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Re: dodge d-100 wont stay running
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Did you check for power at the + side of the coil with the key on?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 11:38 AM
Post #18 of 25
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nope ill be right back
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sonier
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Aug 28, 2009, 11:46 AM
Post #19 of 25
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Re: dodge d-100 wont stay running
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i got nothing going to the + side. multimeter didnt pick anything up with key on. now wat does this mean
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Hammer Time
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Aug 28, 2009, 11:58 AM
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Re: dodge d-100 wont stay running
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That is powered by the ASD relay. Make sure you check that when the key is first turned on because it may only power for a few seconds until the computer sees a crank signal.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 28, 2009, 12:04 PM
Post #21 of 25
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ok i think im gona do it tomorrow its gettin late thankyou fo your hep :)
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sonier
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Aug 29, 2009, 7:39 AM
Post #22 of 25
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Re: dodge d-100 wont stay running
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well i replaced the ASD relay to no sucess the part was real easy to change out. so i still go tosme issues lol
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Hammer Time
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Aug 29, 2009, 7:44 AM
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Nobody said to replace the ASD relay. I told you that the power comes from there which means it needs to be troubleshooted by following a wiring diagram to see if it's getting all the inputs that it should.
This business isn't just full of magic answers where you just throw parts at it and it's fixed. You have to trace and test the wiring.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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sonier
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Aug 29, 2009, 7:55 AM
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yea......... I dont understand wiring in vehicles, i understand everything else can rebuild engines but when electricity steps in im lost lol. So what im really considering si just going ahead and do something ive wanted to for a while. switch to a carb im tired of this electronic control junk. i have no emmision control out where i live so im just gona go ahead and mill out some adapter plates, swith the distributor and inline fuel pump and slap a 4 barrel on there. thankyou for your help :)
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Hammer Time
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Aug 29, 2009, 8:04 AM
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That's wishful thinking. The computer controls the ignition system and the charging system
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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