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1999 Dodge 1500

Tiny
DEANDORSEY
  • MEMBER
  • 1999 DODGE
With the hose attached to the PCV valve the engine dies. With the hose not attached it runs fine. I have tried changing the PCV valve but I still have the same problem
Monday, December 11th, 2006 AT 12:29 PM

3 Replies

Tiny
CARUNDELL
  • MECHANIC
  • 602 POSTS
Hey Dean,
What is the original symptom? Start and stall hot? Cold? Does not matter. Was there a check engine light when this started? More info and we can help ya better!

Chris
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Monday, December 11th, 2006 AT 12:39 PM
Tiny
DEANDORSEY
  • MEMBER
  • 2 POSTS
It started one day when I left work. I was able to start the engine but whenever I put it into drive or reverse it would die. If I kept the gas peddle down when I put it into drive or reverse it would run but as soon as I came to a stop and lifted my foot off of the gas it would die. No check engine warning light. My thought was the PCV valve so I changed it out. While doing this I discovered that as long as the vacuum hose was disconneted it would run fine, As soon as I connected the vacuum hose the idle would slow and once I put it into drive it would die. I have since discovered that there is a smaller vacuum hose directly under the one that gose to the PCV valve. I am not sure where it goes but I think it partly controls the cruise control. If I disconnect it the I can connect the PCV valve back up and the truck runs fine. It's as if theree is a blockage in the vacuum or it is not producing enough vacuum?
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Monday, December 11th, 2006 AT 2:07 PM
Tiny
CARUNDELL
  • MECHANIC
  • 602 POSTS
Dean,
Sounds like you may have an IAC (idle air control) issue. Heres a quick way to reset it and see if this is the problem. Disconnect both negative and positive battery cables from the battery. Rub the 2 cable ends together for 5-10 seconds. Reconnect the battery cables and turn on the key (don't start it) for 20-30 seconds. Turn the key off for 20-30 seconds and then start the truck. You may have to "feather the gas" for a little till the IAC picks up idle control. If the IAC controls the idle normally then you should be all set. If not I'd have to recommend taking it to a trusted shop for diagnosis and repair. Hope this helps!

Chris

P.S. By doing this test you basically reset the PCM, idle control and fuel control settings to factory specs.
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Monday, December 11th, 2006 AT 2:16 PM

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