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#1
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bad cats?
ok so im still chasing the p1151 code. im starting to think its one of my cats clogged up or gng bad. ive noticed a rattle from the front drivers side getting louder and louder and occurring more often. so my questions are:
can a bad cat. cause a p1151...which is lean or rich in bank 1 sensor 2 and secondly are there catalytic converter insulators or heat shields on my truck? i will most likely goto high flow cats....but what abt the pre-cats???
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1999 f150 4x4 - Flowmaster 40 series exhaust - 33" BFG M/T km2's - PHP Gryphon Programmer - RotorPros Slotted rotors - Mag-Hytec Diff Cvr Let's go Wheelin!!! |
#2
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P1151 is basically a lean code for Bank 2 Sensor 1.
Have you changes that sensor yet? A quick and easy way to verify it is the sensor is to switch it out with the O2 on Bank1. If the issue now is on Bank 1 then BINGO! If problem continues on the Bank 2 side then I would be looking elsewhere. Do you have a way of monitoring the O2 sensors? |
#3
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Do what Dave suggested with switching them.
The HF cats will replace both the precat and cat.
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SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. |
#4
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thankx for the recommendation dave...ive nvr messed w 02's b4 so its looks like its time to learn. interestingly, i got p1153 yesterday and the gryphon gave me a description something like 02 slow to switch or something....i cleared it cause i was at a gas station. but it seems more and more like an 02 is gng....ill try switching them and see what happens...
just so i know where does each end of the o2 connect?...i can see the one end around the back of the headers but where does the other end connect?
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1999 f150 4x4 - Flowmaster 40 series exhaust - 33" BFG M/T km2's - PHP Gryphon Programmer - RotorPros Slotted rotors - Mag-Hytec Diff Cvr Let's go Wheelin!!! |
#5
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They will connect to the main harness above/ around the transmission.
If you don't already have one, now would be a good time to get a O2 sensor socket. They are fairly inexpensive but will make life a whole lot easier. |
#6
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ah ok, what does this sensor socket do? im guessing its a testing tool that tests voltage?
where can i get one... autozone, rockauto.com???
__________________
1999 f150 4x4 - Flowmaster 40 series exhaust - 33" BFG M/T km2's - PHP Gryphon Programmer - RotorPros Slotted rotors - Mag-Hytec Diff Cvr Let's go Wheelin!!! |
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