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I have a new 2015 Ford 150 Lariat. I have noticed that when it idles for a while, at a traffic light or in stalled traffic, it feels like the engine stops.

Then the RPM's go up and the idle seems normal again.

Dean Bluff May 01, 2019

is this a eco boost f150 because the eco boost fords will shut off at stop light or when idle at stop if conditions are right

2 Answers

Randy Ohler

Ford Master 14,585 Answers
Posted on Dec 21, 2016

Randy Ohler

Ford Master

Joined: Jun 13, 2010

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Your not making much sense here. Feels like the engine stops? But the RPM's go up, then back to normal. When the RPM"s go up. Do you feel the truck trying to pull forward? If you can't feel it trying to pull. Check the transmission fluid. Low fluid will let it drop out. RPM's will go up a bit, then back down when the transmission re engages. Do you still have warranty on this?

Marvin

Ford Master 85,242 Answers
Posted on Dec 21, 2016

Marvin

Ford Master

Joined: Jun 20, 2008

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You need the computer controlled idle speed control system run through an active test procedure, and yes unfortunately this requires a trip to the dealer in most cases as very few shops have the right scanner, but check around..

5 Related Answers

Anonymous

Posted on Aug 25, 2008

SOURCE: 1995 ford escort idle problem

The IAC valve is usually the problem with the 1.9 Escorts ,causing a very poor engine idle at a stop. It is located on the side of the throttle body .

Anonymous

1 Answer
Posted on Oct 26, 2008

SOURCE: 2004 Saturn Ion high RPM while Idling

check for a vacuum leak

Anonymous

43 Answers
Posted on Jan 06, 2009

SOURCE: 1993 Ford Explorer idles rough when engine is warm

try changing distributor cap & coil

Anonymous

1 Answer
Posted on Mar 06, 2009

SOURCE: 98 Isuzu Trooper stalls on cold start, idle issues..

I had the same issue on my 99 Trooper.

It would usually start when completely cold, but idle around 2k RPM.
It would drive fine. But if I shut it down, ran into a store, and came back out, it would start but immediately idle.
Had to ride the gas a little to get it into gear.
The Check Engine light has been going on and off for 6 months or so.

I took this to my local trusted repair shop (no Isuzu dealers within 200 miles).
The diagnosed the light, and found that the Intake Gaskets were bad or leaking.
The idling problem was related to the car not being able to control the amount of air coming in.

They replaced the Intake gaskets by the next day, and I haven't had a problem since. And no more check engine light, which has been on half a year.

Here's some details from my bill:
(1) Intake Gasket set $107.95
Misc materials $21.00
2.1 hours of Labor

The total cost to me was $345.00, and I definately don't feel gipped.

Ronald Walls

98 Answers
Posted on Jun 11, 2009

SOURCE: 06 f-150 5.4L low idle code and warm ac at idle.

should idle around 700

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I have a new 2015 Ford 150 Lariat. I have noticed that when it idles for a while, at a traffic light or in stalled traffic, it feels like the engine stops.

2 Answers

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Anonymous

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