Forums
Forum Tools
|
 |
22:53:20 - 04/23/2024
V8 Dakotas
| From | Message |
Pacbob
Dodge Dakota
JOIN HERE
8/27/2003
15:48:56
|
 Subject: 4.7L V8 starting problem
IP: Logged
Message:
My 2001 has suddenly developed a warm / hot starting problem. This is at about 31K miles.
Recently did a 30K service and changed the plugs.
When it is cold it starts the first time. When warm to hot it takes generally 2 tries, sometimes 3. So far always starts after 3 tries. By tries, I turn the key and it cranks but does not start. Turn it off and on again and it starts right up. Or if not the 2nd time, then the 3rd. Any suggestions on what to fix or where to look would be appreciated.
|
slow2dak
Dodge Dakota
JOIN HERE
8/27/2003
22:16:55
|  RE: 4.7L V8 starting problem
IP: Logged
Message:
the concern you are having sounds similar to the 4.7 trucks i work on. im a DC tech in Plano Texas so heres my thoughts: Trouble starting;, check the fuel pressure. hook up a guage on the fuel rail, turn the key on and see what it goes too. should be 42-45psi. if not, then there is a problem. time for a pump. after the psi comes up on the guage when you turn the key on, see how fast the psi falls. if it falls more then 5-6 psi in 2 minutes or less, time for a pump. leave the guage hooked up, start the truck, it should hold 42-45 psi at idle and the same under WOT. if under WOT the pressure drops, time for a pump. see if that can help. it just sounds like what i deal with as a DC Tech.
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
|
Chris
Dodge Dakota
JOIN HERE
8/28/2003
10:48:40
|  RE: 4.7L V8 starting problem
IP: Logged
Message:
My 2000 did this from 40k miles until 65k miles when I put in the HO cams. Then it always started fine. Traded it in at 85K miles with no problems.
Chris
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
|
