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1990 Ford F-150 flooding very badly

1990 F-150 /302/5-speed / 4x4, flooding & will not idle. have changed TPS & MAP senser

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  • Anonymous Mar 12, 2014

    my 1990 ford truck 5.0 liter engine efi won't idle after engine warms up

  • Anonymous Mar 15, 2014

    Flooding out



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Ok change the coolant temp sensor it will make it rich if it is bad good luck.

Posted on Nov 24, 2008


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How do I adjust the idle speed?

adjusting idle will be a big mistake,,,,tps ,trottle plate, map will be misadjust too.
Idle is set by iac valve. you have to find out what cause idle to change.

Oct 08, 2014 | 1990 Pontiac Bonneville

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I have a 1989 ford bronco with a 302 that ideals up and down and dies out when park in red light

A number of things could be the problem here:
  1. Bad plugs - fouled plugs would cause erratic idling
  2. Bad wires - also would cause erratic idling
  3. Bad or worn distributor cap
  4. Bad MAF (Mass Air Flow) sensor
  5. Bad TPS (Throttle Position Sensor - this controls the idling speed under all conditions. A bad TPS would idle fine under certain conditions ie engine cold, engine warm with AC on etc but could be bad when truck is warm and at a stop.

Oct 10, 2011 | 1989 Ford Bronco

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1990 wrangler with a 4cyl was dying at idle found the vac line to the map sensor had a crack replaced it and reset the computer. Still dies at idle and now cuts out at higher rpm. Have to fan clutch th...

It could be a combination of 2 things. A faulty MAP sensor itself or a bad TPS (throttle position sensor). It's not uncommon for a bad TPS to idle when the motor is cold but once warm, not idle fast enough to keep the vehicle running.

Jul 18, 2011 | 1990 Jeep Wrangler

1 Answer

I have a 1990 f 150 xlt 5.0 lt auto the truck idles fast

Here are a few things to try. You could be venting vacuum with a bad intake gasket. Use a spray bottle with water and go along the seams with the engine running to see if you can find any openings. The engine will change RPM if it draws in water.

Autozone or Oreillys will check the engine free with a scanner. Usually a TPS throttle position sensor will code a "check engine" light and a manifold leak won't. The TPS is like a carburetor and controls spark and fuel as it works. It is cheap and simple to replace.

May 03, 2010 | 1990 Ford F150

1 Answer

1990 f-150 2WD 5.0L(302) valve cover changing

plenum and egr also check the coolant hoses to the bottom of the intake

Mar 04, 2010 | 1985 Ford F150

1 Answer

P0102 code on 1996 f-150 302 replaced MAF will not run shuts down if you put in drive and try to excelerate, cold will start obtains high idle, put in gear shut off, will sometimes start if accelerator...

maf senser a tps senser are linked ,by they both sense the load on the engine ,one does it throttle opening and the other by air density u may check the tps and also for excessive air leaks around induction system

Jan 31, 2010 | 1996 Ford F150 Regular Cab

1 Answer

90 f-150, 302, 5-speed, floods when trying to start, ...

It sounds like your automatic choke is set to rich you may want to try and back it off a little

Mar 19, 2009 | 1990 Ford F150

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