Quote:
Originally Posted by jvtaverna72
I just bought a 2000 Porsche Boxster S from a friend and mechanic. It has 68k miles on it and has been well cared for. A week ago I got a CEL, codes P1128 and P1130. Previous owner tells me the MAF sensor was replaced recently. Twice in the past few weeks, the car stalled while slowing down (clutch in, engine speed went to idle, then stalled). What is the first thing to check? From reading these threads, I hear discussion of fuel cap (checked), oil cap, oil fill tube, O2 sensors (there are 4, so quite pricey). Where should I start? Should I stop driving it until it's repaired?? Help appreciated.
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So those two codes are tell you that the system has reached the enrichment limit.
So the air fuel mix is to lean.
Most likely cause is an intake vacuum leak.
There can be other causes but start with the simplest things first.
The first thing you want to do is buy a vacuum gauge and do a proper vacuum test.
A vacuum gauge costs around $20.00
hook the gauge to an intake source on the intake. or the brake booster vacuum hose. At idle gauge should read 18-21 inches of mercury with a steady needle.
Or
Google automotive vacuum testing or go to youtube so you know what your looking for and how to do a vacuum test properly.
Let us know what you find.
Driving the car with this issue "could be" damaging to the catalytic converters.
They are very pricey to replace.
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