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02 explorer o2 sensor problems

rangerguy94

Member
Joined
January 13, 2006
Messages
42
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City, State
Hanover PA
Year, Model & Trim Level
1994 Ford Ranger XLT
Hey guys i have been getting an inttermitant check engine light with my 02 explorer xlt 4.0. Three weeks ago i got code p0153 and a day later it went off now today i got the cel on again. I have code p0153 and p0133. I had it in the shop about two months ago for the same code and they found a broken wire at the fire wall they fixed it and now its back. I have installed two new motorcraft oxygen sensor on both banks for sensor one and i still have the code. what could be causing both of the o2 sensors to have a slow response? Someone did say about the maf sensor. I checked the fuel pressure and i have plenty of pressure still within manufactuers specs. Any ideas what it could be?
 






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