I have a 2000 S Type. I reading 2 engine codes, p1132 and p1151. It is low on engine power and backfiring through the

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Customer: I have a 2000 S Type. I reading 2 engine codes, p1132 and p1151. It is low on engine power and backfiring through the intake. My fuel pressure gauge reads appox. 40 psi.
Answered by Richard in 17 mins 10 years ago
15+ years of experience

19,890 satisfied customers

Specialities include: Automotive Mechanic, Small Engine Repairs, Auto Body Repairs, Diesel Engine Repairs

Hello and welcome to justanswer.com

Can you double check that first code? Is it a P1131? Does the tool used to pull codes read pids or live data?

the code did say p1132 but it said "pending". Now I'm only getting the p1151 code. I have also recorded some live data as well.

Ok P1132 is the O2 sensor reads rich in bank 1 and P1151 is the O2 sensor reads lean on bank 2. The most likely cause of this is a timing problem. On these engines the secondary timing chain tensioners fail causing the chain to jump a tooth on the exhaust cam. To check this we need to remove both valve covers to verify that the cams are all aligned with the flat s facing up.

Ok. Finally had time to get back to it. I got one of the valve covers off...gotta buy some extra tools tomorrow to get the other one off. The 2 cams on the left side are not lined up and I can't find a flat s anywhere on them. Also the coils were covered in oil and the coil shafts were filled with oil.

Ok oil soaked coils are caused by those valve cover gaskets/spark plug seals. If you rotate the engine by hand look at the top front of the cams as there should be flats just behind the sprockets.
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15+ years of experience

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