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wvhollerman
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Nov 17, 2009, 5:36 PM
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91 dodge dakota problem
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 disressed over this issue i am about to describe any mechanic who can help will be greatly appreaciated.....
i have 091 dodge dakota 4wd club cab v6. i am having intermittant fuel problems. fuel pump is not running all the tiem but has been replaced
2 times in the past month. fuel filter has been replaced , fuel pressure reguator has been replaced, spark plugs an d wires have been replaced. internal distributor
parts have been replaced. can put gas in throttle body and truck will start. is not equipped wuth fuel temperature switch ( FTC ) or inertia switch. please help me figure this out. i can not get it to a garage to have it checked. please respond asap
wvhollerman@yahoo.com
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Loren Champlain Sr
Veteran
/ Moderator
Nov 17, 2009, 5:59 PM
Post #2 of 9
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Re: 91 dodge dakota problem
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vw; Are you sure you are lacking fuel pressure? Are you getting injector pulse when it doesn't run? Fuel pump relay?
Loren
SW Washington
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wvhollerman
Novice
Nov 17, 2009, 8:16 PM
Post #3 of 9
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Re: 91 dodge dakota problem
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the fuel pump doesnot kick on when i turn on the ignition, there is no fuel is coming from the injectors when you turn ignition on or crank engine over.
as far as i can tell there is no fuel pump relay on the vehicle. according to haynes manual there is no relay on this model.however there is a auto shut down relay could this be the problem. i dont know if this would cause one to work a few days then shut down or not. as i stated before this is the second brand new fuel pump i have put on and the previous owner installed one also . all old gas has been replacdd that was in the vehicle prior to my possession also. it set as whilke with previous owner so i assumed it could have been a bad fuel pump cause by the old gas so i changed it. and changed it agian when problem started over after just a couple of days.
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Loren Champlain Sr
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Nov 18, 2009, 2:46 PM
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Re: 91 dodge dakota problem
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wv; You are correct. This uses an ASD relay. We still need to know if the fuel pump is getting voltage. A noid light connected to the injectors to see if they are pulsing will tell us a lot. If I'm reading the diagram correctly, it is a dark green wire with a black tracer that supplies the fuel pump (coming from the ASD relay). Again, if reading correctly, the SBEC (pin #9, dark blue wire) powers the ASD relay (fuse #13). Hopefully, one of the guys that are much better than me will jump in here. Electrical is my weakest area.
Loren
SW Washington
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 18, 2009, 4:09 PM
Post #5 of 9
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Re: 91 dodge dakota problem
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You can find out if the ASD is working by just checking for power at one side of the injectors during the first 2 seconds of turning the key on.
What you could have is a bad Crank Sensor because the ASD won't power during cranking unless it sees a crank signal but it will power for 2 seconds on initial "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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wvhollerman
Novice
Nov 18, 2009, 7:07 PM
Post #6 of 9
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Re: 91 dodge dakota problem
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can u please send me a link 4 the diagram u r speeking of? thank you so much. please check back after i test this i will send you what i find out.
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wvhollerman
Novice
Nov 22, 2009, 1:02 PM
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Re: 91 dodge dakota problem
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if anyone has a diagram link please post. for the aboved mentioned information. i am having trouble locating these items spoke of.
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Loren Champlain Sr
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Nov 22, 2009, 1:35 PM
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Re: 91 dodge dakota problem
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wv; I don't have a way of posting wiring diagrams. Sorry. Your public library, more than likely, will have manuals that you can make copies of what you need. Pretty sure that All Data has them online, but charges for the service?
Loren
SW Washington
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wvhollerman
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Dec 5, 2009, 4:56 PM
Post #9 of 9
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Re: 91 dodge dakota problem
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cant get any voltage from injectors on start up but also have remove fuel line and no feul is present even after key is on i did diagnostic in haynes book on distib harness and the relay is clickink so i assume it is workink also there are three relays in this truck that are alike i switched them around and still nothing
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