Code 1151 and random sensor

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Jun 1, 2011 | 08:52 PM

NLAuto

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Code 1151 and random sensor

Hi I was recently pulling a car from VA to NC and blew a plug out off the head gouged the cylinder wall exc... (6.8 V10) Truck had about 300k so I pulled the engine rebuit it and the trans. I put the engine back in and everthing is good but this code I was told at first it was an egr problem so I checked the vacume lines, reg valve, egr valve, egr tube, and replaced that sensor still nothing. So I go back and they try and tell me I have a rear set of o2 sensors and that one of them are bad but I have no rear o2's. So im lost PLEASE help

Ill get a pic of the sensor that I cant find a place for it is up front near the thermostat housing it has the thread lock on it from the factory so I assumed it would leak or something when I started the engine but nothing all my guages work im not losing any fluids idk.

Thanks ahead of time Joshua

Jun 2, 2011 | 07:02 AM

projectSHO89

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From: St Louis

This is unlikely to be an EGR fault unless the EVR valve is dumping unwanted exhaust flow into the intake.

You only have two O2 sensors, one on each exhaust manifold/downpipe before the converter. The heavy-duty trucks don't use any sensor after the cat.

Your fault code, P1151, typically is related to the O2 sensor on the driver's side. Either the sensor is bad or there's something wrong with that side of the engine in regards to mixture control. It might also be due to an exhaust manifold leak on that side.

Jun 2, 2011 | 10:03 AM

krewat

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What year truck is this?

Jun 2, 2011 | 02:24 PM

NLAuto

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Sorry the truck is a 1999 F-250 superduty with the 6.8 V-10
The parts store said something about its not the sensor because its reading lean idk for sure I know its code 1151

Jun 2, 2011 | 02:51 PM

NLAuto

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Here is that sensor I cant find a place for. Maybe im blind and just overlooking it idk.

Thanks again

Jun 2, 2011 | 03:00 PM

krewat

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From: Long Island USA

Looks like a coolant temp sensor. What are the actual wire colors on the harness for that, I'll try to check it against my 2001 EVTM and see if I can figure it out.