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03:34:47 - 12/24/2024
General Dakota Board
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M J Benoit
Dodge Dakota
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7/08/2003
23:31:47
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 Subject: Who knows 360 RT's?
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Message:
Hear are the problems:
I replaced 318 with 360 RT, running the 318 mopar performance mod. When cold, runs fine; after warm up, idle sticks at 1100 rpms after deceleration and is killing my brakes to stop - should be at 700 rpms. Under full acceleration, it cuts out power and have to back off on the gas pedal slighty for it to power up. If I accelerate slowly, no problems, but still loss of power. Idle will sometimes fluctuate between 500 to 700 like it has a nasty cam. Sync is set to 0.
Dealer DRB test shows 02 sensor at 0 volts when cutting out under acceleration and IAC set to 80 counts when sticking at 1100 rpms after deceleration. DRB shows Fuel injectors are getting a longer pulse during cutout, but 02 shows lean condition. When main fuel line is removed and ignition is turned on, squirts 3 pulses of gas and stops, which means I am getting a primer charge, but how about prolonged fuel?
Is my IAC getting a high rpm signal from the computer because under acceleration it goes lean? No one can figure this out and I am now broke over this :-|
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MJB
Dodge Dakota
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7/20/2003
00:21:17
|  Air bubbles in fuel line, 360RT
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Message:
Hey, I have air bubbles in my EFI fuel line and have changed everything, does anyone know where they can be coming from?
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slow2dak
Dodge Dakota
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7/20/2003
12:46:22
| RE: Who knows 360 RT's?
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Message:
hey M J, what i would do as a starting point would be to hook up a fuel pressure guage to the schrader valve on the fuel rail. then, turn the key on without starting it and see what the fuel pressure is at. should be at about 42-47 psi. if not, check for leaks if any which i hope you dont have. then, turn the key off and watch the fuel pressure guage, if it drops rapidly, then you need a fuel pump. psi should not fall more than 7 psi in the first 30 seconds. then start the engine and see what fuel pressure is at. should still be about 45 psi at idle. then stick your guage underneath you windshield wiper and go for a drive. under part throttle conditions and WOT, if the pressure falls off when you stomp the throttle, then you need a pump. thats just where id begin. i dont want to make you sound dumb but, pull the IAC motor and clean it. also what year is your truck? hope any of this can help you.
Mike
02 4.7/Auto RC Sport
3.55 and a one legged wonder
2 1/4" True Duals, Dynomax Mufflers, no tailpipes or dumps
tps .701
relocated IAT
Adjustable ECT sensor
K & N drop in
Removed rubber flap
Adjustable LPS
All on street tires
Best 1/4: 15.20 @ 89.52
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