So the Dodge that has been 99% reliable since the day we bought it decided it did not want to start last week. I say 99% because six weeks ago the fuel gauge started acting wonky. When I turned the key on I got all the lights on the dashboard including the CEL but I did NOT hear the fuel pump coming on. Simple right? Needs a fuel pump.
So I put a fuel pump in this weekend.
No difference.
I see no fuses bad in the two primary fuse boxes, and played roulette with the relays to no avail. I have spark at all four coil wires as well as 4 newer spark plugs and the timing belt appears to be spinning properly with both cam pulleys aligned.
Who has a magic bullet on them?
This should be pretty easy to fix. If it's anything like my other multiple mopar fuel pump experiences, all you have to do is split open the wiring harness until you find the broken/melted spot. 
must resist...the urge to...make entire...car...repl...acement joke....auurgghhaaa!!!!
Need... to... get...running... to sell... so... I ... can get a... better P.O.S.... like a... Renault Fuego...
VOM's are so handy to find out if you are getting current to the pump.
Or a 12 volt test light.
my buddy is having similar problems with his E28.. verrry similar...
I was going to say the fuel pump won't come on if the computer doesn't detect a working crankshaft position sensor, but you're getting spark, so that's probably not it. I found that out the hard way when I put a transmission in a friend's Dodge Ram 1500, and accidentally smashed the wiring to the crank sensor between the engine and transmission. That sucked.
A buddy at the Dodge garage said to remove the back seat and look at the wiring as it comes in from under the car. He has had a rash of this body style smoking the harnesses just like PG said.
iceracer wrote:
VOM's are so handy to find out if you are getting current to the pump.
Or a 12 volt test light.
They are awesome if you remember to replace the batteries BEFORE you have to do a big electrical repair.
Pat
Reader
5/3/10 2:47 p.m.
If it's like the older Dodge's there's a relay. I'd find that, make sure it's working, then check for power at the relay, then continuity from the relay to the pump.
a buddy of mine had a similar problem with his dodge stratus but his would blow a fuse anytime he would replace it and start the car. as it turns out the air filter cover mashes a wire up against the fuel line (by design???) and after so many years the wire had worn through and blew the fuse every time you started the car. unless of course the air filter cover was removed because then it wasn't pushing the wire against the metal fuel line. I don't know if this will help but it's worth looking in to.
Six codes, in order:
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P0627 Fuel Pump Circuit Open
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P0481 Cooling Fan 2 Relay
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P0480 Low Speed Cooling Fan
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P0685 ASD/Auto Shift Down Relay
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P0463 Fuel Gauge Sensor Circuit High Voltage
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P0108 Map Sensor Circuit High Voltage
Cleared codes from system and tried to start, crank no start... BUT none of the codes have returned...
... frustrated ;)
none of the codes returned because the car wont start, so it couldnt go into closed loop and allow all of the monitors to run
Run 12V straight to the pump from the battery. Done this on a few "no start" problem cars. If it starts I just set up a relay for key-on power to the fuel pump, add a fuse and call it a day. If the car was worth more I'd say fix it properly and find the problem.
slefain wrote:
Run 12V straight to the pump from the battery. Done this on a few "no start" problem cars. If it starts I just set up a relay for key-on power to the fuel pump, add a fuse and call it a day. If the car was worth more I'd say fix it properly and find the problem.
I am going to try something like this and if it works I am driving it straight to the Hyundai/Kia dealer for a Genesis, or to the Ford dealer for a 2011 Mustang V6.
John Brown wrote:
slefain wrote:
Run 12V straight to the pump from the battery. Done this on a few "no start" problem cars. If it starts I just set up a relay for key-on power to the fuel pump, add a fuse and call it a day. If the car was worth more I'd say fix it properly and find the problem.
I am going to try something like this and if it works I am driving it straight to the Hyundai/Kia dealer for a Genesis, or to the Ford dealer for a 2011 Mustang V6.
The new mustang comercial is pretty awesome, and I dont even like blue ovals...at all. But I guess thats not really fair. Of the medium 3, I guess theres a war in my brain between henry and the general.
Is there a possibility someone lightly rear-ended the car, not leaving any damage, but hit it hard enough for the automatic fuel shutoff thing to kick in? There should be a button in the trunk to allow the fuel pump to turn on again. I don't know if this would have thrown a code. I don't think so because I think it's an inertia switch that cuts the power, not the computer.
Bob
They would have had to have gotten exceptionally creative. It was backed into my driveway at 6:00pm and would not start at 6:00am.
