Lately, while its been cold here in Tennessee, I will occasionally go out to start my truck in the morning and let it run for about 10 to 15 minutes before I leave for work. But lately, when I come out to leave, the check engine light will be on. It will go off if I turn the truck off and restart it. But sometimes it will come back on during the ride to work. I took it to get the codes checked but there were no codes stored. I'm wondering if this may be the ERG sensor but I'm just guessing. Anyone have a guess on what it could be?

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1992 Ford Ranger XLT 4x4 2.3 4cyl 5-speed

Is the CEL flashing?

Best thing to do is get your own reader and keep checking until you have a code. Then post the actual code #. Anything else is a guess.

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

If his ranger is the same as his avatar he can't use a code reader

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

have you cleaned you Mass Airflow Sensor? I would start there...
or read the code.... it will tell u y

I just looked at his sig. He has a 1992. He could get the obd-1 reader. I would start there.

OP. Is your CEL flashing?

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Where did you take a 1992 to check for codes?

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

The CEL is not flashing just constant. I took it to the auto shop that is connected with my work. I work at a co op, and it has a car care center. The light was on when I drove up to get it checked, but the mechanic turned the truck off , and the light went off and he found no codes. He said if it had a code it should save it. But yes, you can check codes on a 92. The port is under the hood instead of under the dash

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I have not tried cleaning the mass airflow sensor but I will have to look around on youtube or something to figure out how to do so

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1992 Ford Ranger XLT 4x4 2.3 4cyl 5-speed

http://www.fordrangerforum.com/engin...ow-sensor.html

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if you have never done it, i would start there. Mine had similar issues, but the sensor was cumming unplugged,....