Stalling.
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Freshman User
Joined: Jun 2010
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Stalling.
Hey im new here and I just bought this my truck about a month or so ago. Its a 90 F150 and it has a 5.8 that took the place of a 5.0 and its a 5 speed. It is EFI by the way.
I have been having a problem with it stalling while I am coming to a stop. Usually this happens when the motor is cold. But it happens when the motor is warmed up on occasion to. Also when I go to cold start it, it take a minute before it will idle right. I have to pump the gas or it will die. Any ideas?
I am trying to rebuild this truck to like new and if I can just figure out the engine I am good to go with the rest. The engine I believe was poorly switched out, but run great after when it doesnt stall.
I have been having a problem with it stalling while I am coming to a stop. Usually this happens when the motor is cold. But it happens when the motor is warmed up on occasion to. Also when I go to cold start it, it take a minute before it will idle right. I have to pump the gas or it will die. Any ideas?
I am trying to rebuild this truck to like new and if I can just figure out the engine I am good to go with the rest. The engine I believe was poorly switched out, but run great after when it doesnt stall.
Post Fiend
Joined: Jan 2005
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Ford Fuel Injection How To Run a Self-Test Here is a link on how to check for trouble codes. Also shows how to clean the IAC.
However you may have a bad Engine Coolant Temperature sensor. That may show up in the codes.
However you may have a bad Engine Coolant Temperature sensor. That may show up in the codes.
Cargo Master
Joined: Jul 2009
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From: Des Moines
^^ All good suggestions. You may also want to check the fuel pressure regulator. It's a simple test- just remove the vacuum line- if you smell gas or see it dripping out of the line, it's bad.
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Thanks
Thanks guys I will check all of these this weekend while I am giving it a complete tune up.
I will let you know how it turns out. Now I just gotta locate my regulator. IAC looks like factory original as well so it may be that.
I will let you know how it turns out. Now I just gotta locate my regulator. IAC looks like factory original as well so it may be that.
Freshman User
Joined: Jun 2010
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Might want to read the following threads - I'm kinda in the same boat currently...
rough running 351
bogging/hesitation/bucking
rough running 351
bogging/hesitation/bucking
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Freshman User
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I just replaed the IAC and leaned the throttle body, which was not very dirty compared to the old IAC, it seems to be idling better. Only time will to see if it stalls again or starts like it has been when cold.
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Freshman User
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I'm getting ready to do a high pressure flush of the injectors. Most everything else has been replaced.
New gas
Fuel Filter
Fuel Press Reg
PVC
Cap/Rotor
Wires/Plugs
Timing Chain
Intake Plenum Gasket
Throt Pos Sensor
Intake Air Temp Senor
Cleaned - IAC/Throt Body
Checked all over for vacuum leaks
Tested EGR
Tested Fuel Pressure
Testing timing
Does not want to start or idle or maintain RPM. I always have to feather the gas to keep it running.
If I spray starter fluid directly into the intake, runs great...
New gas
Fuel Filter
Fuel Press Reg
PVC
Cap/Rotor
Wires/Plugs
Timing Chain
Intake Plenum Gasket
Throt Pos Sensor
Intake Air Temp Senor
Cleaned - IAC/Throt Body
Checked all over for vacuum leaks
Tested EGR
Tested Fuel Pressure
Testing timing
Does not want to start or idle or maintain RPM. I always have to feather the gas to keep it running.
If I spray starter fluid directly into the intake, runs great...
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Freshman User
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Nope IAC
Nope IAC change and full tune up didnt work. Will try fuel pressure regulator next. Hopefully that is it. I dont have an egr as it was blocked off a while back. Going to change pvc and fuel regulator this weekend.
My truck runs great other than the stopping. It starts fine and after initial morning start it wants to bog down and die but I just pump the gas once and it kicks back up to idle. When I come to a abrupt stop and press the clutch it wants to die sometimes. Also it seems like it does it when I am going down hill worse for some reason.. Could this be something? Also seems like it may be doing it on more abrupt stops.
My truck runs great other than the stopping. It starts fine and after initial morning start it wants to bog down and die but I just pump the gas once and it kicks back up to idle. When I come to a abrupt stop and press the clutch it wants to die sometimes. Also it seems like it does it when I am going down hill worse for some reason.. Could this be something? Also seems like it may be doing it on more abrupt stops.
New User
Joined: Jun 2010
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I have an 89 f150 supercab with a 300 i6. Its my first ford and have only had it for 2 weeks. went playing in the creek, since then had problems like some of the above, changed the plugs wires and cap, also the coil. no help. Then I seen a vacuum line that got knocked off while driving over a bunch of rocks. I dont know what it is for but it is on the upper pass side of the fire wall. as soon as i hooked it up it ran great. Good luck
New User
Joined: Jun 2010
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well I dont know what that is but I replace the plugs wires and coil, nothing changed, 20 seconds after i was done, I seen a vacuum line disconected on the upper pass side of the fire wall. a very tiny vacuum line. hooked it up and ran beautifully. lol. thank god. and thanks for your help