surge upon start up

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Apr 16, 2009 | 08:00 PM

96powerstroke

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surge upon start up

i am posting this question for afriend of a friend. i have not seen the truck or played with it at all. but i am trying to get my head around the problem. when the truck is cold and started it will surge, and by surge i mean rev up and down until it warms up. it does not stall out, and runs fine once it warms up. its 99 with an auto and 140k miles. i dont know if it is an early or late 99. like i said its a friend of a friend i have not seen the truck.

Apr 16, 2009 | 08:04 PM

F350-6

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From: Texas

How cold is it outside when this happens? Sounds like a case of the romps.

Also make sure the oil is full and not past due for an oil change.

Apr 16, 2009 | 08:07 PM

zx250

Of the next Riffraff East

Joined: Oct 2004

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From: Concord NC

I argree with Chris, sounds like the romps. Some have found relief with syn. oil. Some with new IPR and ICP and some just learn to romp and like it.

Apr 16, 2009 | 08:15 PM

96powerstroke

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whats causes the romps? any other soultions, the truck does thsi all the time and has been doing so for about 40k miles i just found out.

Apr 16, 2009 | 08:18 PM

F350-6

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From: Texas

The romps are typically associated with below freezing weather, and caused by the cold thick oil not being able to properly fire the injectors in our HEUI system. Sticking poppets inside the injectors (most commonly caused by not paying attention to oil drain intervals) can also cause this. A sticking IPR is another possibility.

How old is the engine oil, and is it full?