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Odd rough running issue

Gbear924

New Member
Joined
Jan 4, 2022
Messages
2
Reaction score
0
Points
1
Location
CT
Vehicle Year
1988
Make / Model
Ranger 4wd
Transmission
Manual
My 88 2.9 runs rough sometimes. After startup, warm or cold, it will idle fine for about 60-90 seconds, then start to stall. If I start driving, it will run rough for a while before slowly getting better. At 100% throttle it does not run rough.

If I start it up and monitor it when it starts to stall, i blip the throttle to keep it running (every 15 seconds or so). After a couple minutes, it will idle normally and run and drive normally.

I have to repeat this procedure every time the key is shut off, regardless of engine temp/ run time.

I have checked/ replaced the common tuneup items, but I do not suspect any of them due to the odd nature of the situation.

Has anyone else experienced this?

Thanks,
G
 


superj

Well-Known Member
U.S. Military - Veteran
Joined
Oct 1, 2021
Messages
2,144
Reaction score
1,581
Points
113
Location
corpus christi, texas
Vehicle Year
2004
Make / Model
ranger edge
Engine Type
3.0 V6
Engine Size
3 liters of tire smoking power
Transmission
Manual
2WD / 4WD
2WD
Total Lift
none
Total Drop
none
Tire Size
235s
My credo
Grew up in the 70s, 80s, and 90s
Not on a ranger, but some jeeps had bad solder joints in their ecu and when the jeep was cold, it took some things to get it running till it warmed and the heat from the engine warmed up the ecu
 

rusty ol ranger

Im a Jeep guy now.
Supporting Member
Joined
Sep 22, 2007
Messages
9,879
Reaction score
4,837
Points
113
Location
Michigan
Vehicle Year
1987
Make / Model
Ford
Engine Type
2.9 V6
Engine Size
177 CID
Transmission
Manual
2WD / 4WD
2WD
My credo
A legend to the old man, a hero to the child...
Pull the codes on it. Could be a TPS or coolant sensor.
 

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