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-   -   Multiple codes after sitting (http://mustangforums.com/forum/4-6l-1996-2004-modular-mustang/711568-multiple-codes-after-sitting.html)

number18 07-03-2014 01:24 AM

Multiple codes after sitting
 
Hey, I had parked my mustang for about a year in a heated garage and when I pulled it out it doesn't want to start or run. Typically after sitting I put in fresh gas and with a small spurt of starting fluid it starts and runs all season. This time it will only start some time and it idles rough (bounces and idles low and then revives itself most times) if I try giving it gas it just stalls.
I am also getting these codes; P0175 (system too rich bank 2), P0190 (Fuel rail pressure sensor), P0113 (Intake air temperature sensor), P0113 (circuit high input)
I tried cleaning the MAF sensor by spraying MAF cleaner on it and also spraying the IAT or whatever it is near the throttle body and adding new gas. Anyone know what is causing all these codes?
Thanks!

number18 07-04-2014 01:36 AM

Alright, so I cleared the codes and tried starting the car more with no luck of even an idle. Then I did some further searching and tried cleaning the black build up on the iac and the throttle body, replaced the fuel filter and still didn't have any luck. I have come to the conclusion that the fuel pump died. Would anyone be able to tell me if it would be the fuel pump driver module or the fuel pump module assembly itself?
Thanks!

dawson1112 07-04-2014 01:59 AM

You need to put a fuel pressure gauge on it to check pressure, but since it is starting at all even for a second I would be more inclined to say fuel pump is weak, but since you pulling a code PO190 fuel rail pressure sensor , it could be a bad sensor since this is the sensor responsible for feeding data to the FPDM so it knows how hard the pump should be pumping fuel. I suspect either you have a problem in the plug such as corrosion or you have a bad fuel pressure sensor. ,,, Possibly even a vacuum leak at the sensor.

If you know how to energize the fuel pump to 100% you can test the integrity of the pump, this can be done using a tech II scanner or manually using a jumper wire.

number18 07-22-2014 11:52 PM

Turned out to be a faulty fuel pump so I changed it out and car seems to start and idle nicely consistently. Thanks for the help!


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