Maybe I screwed up :(
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Elder User
Joined: May 2004
Posts: 749
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From: Phoenix, Az
Maybe I screwed up :(
I am on my way to Az. I stopped and got gas in Va. I have a rental truck as well. Put gas in both at the same time, same pump. (#7, #8). Rental runs fine. About 1 -1 1/2 miles down the road, my truck lost power, started running terrible. I got off at the next exit and checked fuel pressure found a little bit of water in a test sample. Put seafoam in the tank. Got back on road at 35 mph tops. Off again at next exit. Then after letting truck run while parked for a couple of hours and went to get a motel room. Truck seemed to run better, but now started engine racing on its own. Terrible to drive and surging is atrocious. I am between a rock and a hard place and open to suggestion.
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Elder User
Joined: May 2004
Posts: 749
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From: Phoenix, Az
My impression at this point is that it is an electronic control issue. Perhaps the fuel conditioners affected a sensor. It did push a lot of white exhaust smoke with a chemical smell.
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Elder User
Joined: May 2004
Posts: 749
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From: Phoenix, Az
No check engine light, and no codes. I had it scanned with another scan tool, and everything showed as normal.
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Senior User
Joined: Dec 2012
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From: Wildwood, Mo
Dave, On our 2001 Impala I have had two different things that caused the engine to run away.
One was the throttle position sensor. If I recall correctly, I could control the speed using the cruise control. This would work on the highway until I came to a steep downhill and had to use the brake.
Second was the idle air control valve. If I remember right, I could not control this with the cruise control. It wanted to run 85 or 90 mph on the level. I pulled it into a dealer with the engine racing. The tech guy turned it off and on and that fixed it for maybe an hour. That was a stressful trip to Dallas and back. Hope my experience will help you, Patrick
One was the throttle position sensor. If I recall correctly, I could control the speed using the cruise control. This would work on the highway until I came to a steep downhill and had to use the brake.
Second was the idle air control valve. If I remember right, I could not control this with the cruise control. It wanted to run 85 or 90 mph on the level. I pulled it into a dealer with the engine racing. The tech guy turned it off and on and that fixed it for maybe an hour. That was a stressful trip to Dallas and back. Hope my experience will help you, Patrick
Last edited by 41505379; Jun 26, 2016 at 11:00 PM. Reason: added a word
Cargo Master
Joined: Jun 2010
Posts: 2,113
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From: Iowa
This is a tough one, I can think of two possibilities for this with no codes.
Less likely but possible, the engine computer has failed?
More likely in my opinion it is two things that failed at the same time, first the catalytic converter pluged killing the power and causing the smoke. Then the idle air control valve started sticking and causing the surging.
There could very well be other better answers to the problems but even just bad gas causing this much of a problem would in my opinion throw an emission code.
Less likely but possible, the engine computer has failed?
More likely in my opinion it is two things that failed at the same time, first the catalytic converter pluged killing the power and causing the smoke. Then the idle air control valve started sticking and causing the surging.
There could very well be other better answers to the problems but even just bad gas causing this much of a problem would in my opinion throw an emission code.
Frmr Ford Trans Engr
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From: SE Florida
Postmaster
Joined: Jul 2015
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From: very South Texas
My apologies..
I did not know or understand he had a caravan trip.
multi vehicle transport setup requiring several trucks. and the Rental truck had NO involvement in the problem he is having.
I did not know or understand he had a caravan trip.
multi vehicle transport setup requiring several trucks. and the Rental truck had NO involvement in the problem he is having.
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