94 dakota 5.2 - no spark - auto shut down relay not energized
The ''auto shut down relay'' (under the hood on the left fender) is not being energized. I believe this is why I have no spark and the fuel injectors are not working. What energizes this relay and how can I test circuit?
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Re: 94 dakota 5.2 - no spark - auto shut down relay not...
Hello this is a feature to stop the engine and exhaust system from filling up with gas when spark is lost! years ago fuel would be delivered as usual and you Eng and converter would be full of gas real hazard back then!!!!now they built into computer when spark fails fuel automatically shuts off safety feature??? or not? so i would start to test coil this is a good place to start and if you have engine light on plug in OBD 2 scan tool to retreve the fault hope this helps you out and if you do not have a proper spark tester tool i would invest in one most auto parts stores usually carry them!!! $15-$30 dollars usually.John
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ASD relay ! Is there B+ voltage to the coil's ? Fuel pump relay electrical circuit diagnostic's . Do you have an know how to test with a DVOM digital volt ohm meter ? You can check out wiring diagrams at http://bbbind.com/free_tsb.html ! The ASD - auto shut down relay power's up the fuel pump relay , ignition system an some other thing's . It's in the under hood fuse box !
check for spark at the sparkplugs, and listen to hear the fuel pump going when key is turned on. if no pump noise and no spark it can be the auto shutdown relay located on the drivers side fender behind battery. the auto shut down shuts off power to the ignition and fuel pump if the timing belt snaps. ,,,, if you have spark and fuel pump works then check firing order on plug wires , if they are in right place then check timing , if timing belt was replaced without lining up the timing marks it wont run
The Dakota doesn't use a switch it has what is called an emergency shut down relay, it is relay #3 in the under hood power distribution box. Also the fuel pump relay is located in the same box, it is relay #5. What symptom do you have?
Do you hear the fuel pump when you cycle the key?
If not, then Check the ASD - auto shut down relay ,under hood, drivers side,distribution box
Only got computer,crank sensor,and coil
The distributor hall effect sensor, is for the injector timing,do not move the dist.,
Is the ignition switch and neutral switch okey
If you got no wiring diagrams or experience with a volt meter,your in a tough spot.
Hey Bobby..my name is Keith...the headlight relay is located under the hood...in a black box that is mounted on the left fender....and in the lid of the black box..it will tell you what is what..and that we are talking about the same thing..a headlight relay that im talking about is a little cube shaped relay with about 5 prongs sticking out of the bottom of it..i hope this will help
I know it's a long shot without looking at it or more information. Look under the hood on the left (drivers) side center of the fender at the wire harness. The one inch diameter or so wire harness running along the fender. Look for any green spots or even open the harness up a bit to look. The ASD relay wire runs through that harness. I've found a few corroded in two with the same symptoms. I think the washer bottle may be over the harness, not sure. Like I said, it's a long shot. I hope this helps.
un-plug the ecm " computer module " it should be under the hood by the passengers side on top of the fender.
it's a box with three connectors to it.
un-plug them all three for 5 min or so.
and plug them back up.
see if that helps to start it.
i had a 96 and i replaced everything and still will stall or have problems starting it up.
finally i un-plugged the computer and it will run fine for 15 or even a month without any issue, so my conclusion was that the ecm was bad.
It's under the hood usually on the driver side fender well. It's commonly known as an ASD Relay. Check the electrical part of the ignition switch. The "on" position of the ignition switch may not be working either.