Code P0193 engine idles rough, sometimes.

Tiny
RLOTHIAN
  • 2004 FORD EXPLORER
  • 105,000 MILES

Code P0193; engine idles rough, sometimes stalls under load (D or R). Poor gas mileage, approx 25% worse, about 15 mpg.
After driving on freeway at 60 + mph for 15 - 20 minutes, then stop engine, hard start, very rough idle, engine chugs, no throttle response for 10 - 15 seconds, then able to increase rpm, but slow response. Engine misfires at idle and up through 2000 rpm. Original spark plugs, cables.
Cleaned MAF sensor, replaced air filter and egr valve. Mixture smells rich, previously detected "running rich bank 1 and 2" but does not show now.
Need help please.

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Thursday, February 7th, 2013 AT 3:31 AM

1 Reply

Tiny
HMAC300
  • EXPERT
  • 45,744 POSTS

Check fuelpressure first then check for leaks at fuelpressure sensor on fuel rail if not that have a pro look at it it may be an electrical problem. Fuel pressure shld be 30-40 psi

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Thursday, February 7th, 2013 AT 2:49 PM

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