Question about 2011 Ford F-150 Regular

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I have 1990 f150 xlt lariat 4.9 liter inline six that runs fine cold then warms up and idles rough and stalls out I just replaced air pump/ smog pump. It runs fine cold any ideas.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Thunder55
  • 318 Answers

SOURCE: it uses too much fuel. 2,6 liter per 10 km.

You need to replace the sensors,,Throttle PositioningSensor, OXYGEN sensors, Mass Air Flow. after which your truck will run nicer and use less fuel.

Posted on Jan 16, 2009

c17hydro
  • 2984 Answers

SOURCE: cost of valve job?

Depends on where you go to. Call around and ask. I just came from a parts store a few hours ago and asked about a head job...resurfacing and cleaning/inspecting...$138 for BOTH heads...Chevy 350. It shouldn't cost that much at all for you...unless you are looking to get a valve job at the same time. They should call you to let you know after the before-mentioned if you need a grind job. But...call around. And, it should only take a day to get this done. I know taking in a bare head is about $25 to get it hot tanked.

Posted on Mar 10, 2009

alicantecoli
  • 22114 Answers

SOURCE: my 1990 ford f150 xlt lariat started running rough

yes it could be its vacumn pipe that comes from the inlet manifold to the a valve on the injector rail

Posted on Jul 24, 2010

  • 2309 Answers

SOURCE: I have a 1990 ford

could be the map or the egr valve, or a vacuum leak, get it installed on a real time scanner not a code scanner,

Posted on Oct 27, 2010

Fordmaster89
  • 17 Answers

SOURCE: what type of transmission is

three different transmissions 1. E4od Electronic 4 speed automatic with OverDrive 2.5speed manual with overdrive 3. NP 435 4 speed manual

Posted on Dec 03, 2010

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as for the rough running after warm up. could be mass air flow sensor, to test, when car warm, tap the sensor wiht the handle of a screw driver when its running.. if it stumbles or stalls when you tap it. then it needs to be replaced. it could also be coolant temperature sensor, or leaking EGR valve.

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My car uses to much fuel. 2,6 liter on 10 km.help


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Jan 16, 2009 | 1990 Ford F150

1 Answer

It uses too much fuel. 2,6 liter per 10 km.


You need to replace the sensors,,Throttle PositioningSensor, OXYGEN sensors, Mass Air Flow. after which your truck will run nicer and use less fuel.

Jan 16, 2009 | 1990 Ford F150

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