IDLE

1986 Ford Ranger

Tiny

chrismcman@gmail.com

September, 8, 2009 AT 8:18 PM

Engine Performance problem
1986 Ford Ranger 4 cyl Two Wheel Drive Manual 100000 miles

wont idle, runs rich

FOUND 1242 RELATED QUESTIONS

Dies On Idle

22 ANSWERS
8 IMAGES

1 Answer

Tiny

rasmataz

September, 8, 2009 AT 8:51 PM

Running rich: Could be caused by the following a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.

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