1986 Ford Ranger Vehicle stumbles

MSHEPP

MEMBER
1986 FORD RANGER
2.3L
4 CYL
2WD
AUTOMATIC

This is a 86 Ford Ranger XL with a 2.3L non turbo fuel injection engine. From what I have gathered is that this vehicle starts to miss, stumble and loading up (rich) and then you have to feather the fuel constantly. This only happens when the vehicle reaches operating temp. It never does it when it is cold. Other information I have gathered is that the ignition module on the distributor, cap and rotor button has been replaced. The fuel pump has been replaced, not sure about the filter. I was told that I may need to look into the temp sensor for the computer.

Saturday, April 5th, 2014 AT 1:22 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

I hate to ask this, but does this have fuel injection or a carb? I can't remember that far back. Also, as far as the temp sensor, some models had a coolant temp sensor which told the computer the temperature of the coolant. From that info, the computer would determine how rich or lean to make the fuel mixture. This, however, would not be relevant if the vehicle has a carb and not fuel injection. If that sensor is bad, it will cause the system to run in a closed loop running the mixture as rich as possible.

Let me know

Was this

answer

helpful?

Yes

No

Saturday, April 5th, 2014 AT 7:24 PM

MSHEPP

MEMBER
3 POSTS

Yes it is fuel injected. I am thinking it may be some type of sensor. Being the only time it does it, is when it gets hot. So I'm dealing with an heat issue causing some sensor to go bad.

Was this

answer

helpful?

Yes

No

Sunday, April 6th, 2014 AT 9:07 AM

MSHEPP

MEMBER
3 POSTS

The vehicle runs way to good when you first start it and maybe drive it 2 to 5 miles. No skips, misses, hesitation, stalling, power loss I mean nothing. But goes to pot when reaches operating temp.

Was this

answer

helpful?

Yes

No

Sunday, April 6th, 2014 AT 9:17 AM