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89 bronco II engine stalls


scw6

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Engine runs awhile then stalls. Sometimes starts right back up but sometimes needs to set awhile before starting. Have replaced several parts over past couple years. New computer 2 years ago and since have replaced; distributor cap, plug wires, fuel pump, idle air control valve, throttle position sensor, fuel pressure solenoid, and most recently ignition module. Would appreciate any help.
 


JerryC

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Runs and drives then stalls, or just idles for a while then stalls?
 

scw6

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Both. It will sometimes stall when idling for a time and also after driving a while.
 

JerryC

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SWAG, TFI module.
 

scw6

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Replaced TFI module a week ago. Guess I may have got a bad one. Wondering if the magnetic pickup coil could possibly cause this.
 

JerryC

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Do you have vacuum gauge and fuel pressure gauge?
 

scw6

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Neither. Probably need to invest in a fuel pressure gauge. A friend is going to check it for me on Monday and I think he has one.
 

JerryC

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If you are going to need to tune the engine, a vacuum gauge is essential (and cheap).
 

scw6

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Ok. I appreciate the info. I will check at local parts store for one.
 

Uncle Gump

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I would also suggest picking up a spark tester... ST-125

When the truck quits... very simple to put on and see if you have spark.

15447
 

scw6

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Thanks for the info.
 

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