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Discussion Starter #1
The other day it was pretty cold up here in North Dakota. I went out and started my 95 Bronco w/ a 351. I let it warm up and then left the parking lot, and after just a little ways the CEL came on, so i headed back to the parking lot. When i got there the light went off, so i left again and it came on again. I never got over 30 mph. Well i drove it the next day, light never cam on. Yesterday i drove it about 200 miles, no problems. I pulled the codes and got code 63. Which is a voltage problem with the TPS (i believe). My question is, why didn't the cel stay on. Also, am i looking at needing a new TPS? Thanks. If this doesn't make sense just tell me.
 

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Observe Volt Meter for indication of a fault while performing the following:

-- Move throttle slowly to WOT position.

-- Release throttle slowly to closed position.

-- Lightly tap on TP sensor (simulate road shock).

-- Wiggle TP harness connector.

Clean any connectors if damaged, or wires if broken.

If fault is found and nor wire / connector damage is found:
Replace TPS
 

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Discussion Starter #3
So fireguy, in other words it is the tps that could have caused the CEL
 
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