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Old 08-12-2012, 04:36 PM   #1
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Bad Fuel symptons??????

So.... the boxster has been running perfect. Today the wife and I decided to take the back road to Albuquerque. Went to Chevron here in Santa Fe. I had a little over a quarter tank, so I put in thirty bucks and was up to 3/4 tank when we left the Chevron. The drive to Albuquerque was fine, no problems. On the way back to Santa Fe, about 75 miles from when we fueled up, we stopped at a casino and were inside for about twenty minutes. The weather was getting dark and stormy so we decided to leave to continue our trip back to Santa Fe. The boxster didn't fire up right away... it's never done that before, about five seconds of cranking, it fired up. I pulled out of the parking lot and there it was, a huge loss of power, it felt like my fuel filter was pretty clogged up. Got on the freeway and noticed that the power was definitely not there, it still was able to get up to 75 mph, but I didn't want to push too hard. I kept it at about 3500 rpms. About three miles on the freeway and the check engine light came on. Made it home with no issues, it idled fine at a few red lights, but I didn't get on the throttle at all. Checked the codes and this is what they were. P1125 P1126 P1132 P1133. I cleaned out the MAF sensor with a can of MAF cleaner that I bought at Auto zone. Put it back in the car. When I went to start it, It cranked over for about 15 seconds and nothing. Paused a few seconds, then tried again. Another 15 seconds of cranking and it finally barley fired up. Is idling pretty rough, so I shut it off and came inside. This is where I am at now. Please give me your thought and opinions. I was considering pumping out the remaining fuel that is in there and putting some new fuel from somewhere else. The fuel filter is the original filter with 63,000 miles. I have always put supreme fuel from Chevron in the last ten years since I have owned the car.
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Old 08-13-2012, 11:54 AM   #2
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Disconnect the MAF electrical connector and see if the car starts and runs better. If so, replace the MAF. If not, replace the fuel.

If neither of those helps, you'll have to trouble-shoot the engine error codes step by step.
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Old 08-13-2012, 01:51 PM   #3
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Code shows bad O2 sensor on both sides


----------------------------------------------------------------------

OBD II Codes:

Porsche Motronic 5.2.2 (1997-1999 Boxsters)
P1123 Oxygen Sensing Adaptation Area 1 (Cylinders 1 - 3) - Lean Threshold
P1124 Oxygen Sensing Adaptation Area 1 (Cylinders 1 - 3) - Rich Threshold
P1125 Oxygen Sensing Adaptation Area 1 (Cylinders 4 - 6) - Lean Threshold
P1126 Oxygen Sensing Adaptation Area 1 (Cylinders 4 - 6) - Rich Threshold
P1127 Oxygen Sensing Adaptation Area 2 (Cylinders 1 - 3) - Lean Threshold
P1128 Oxygen Sensing Adaptation Area 2 (Cylinders 1 - 3) - Rich Threshold
P1129 Oxygen Sensing Adaptation Area 2 (Cylinders 4 - 6) - Lean Threshold
P1130 Oxygen Sensing Adaptation Area 2 (Cylinders 4 - 6) - Rich Threshold

Porsche Motronic 7.2 (2000-2002 Boxsters)
P1125 Oxygen sensing adaptation, upper load range, bank 1
P1126 Oxygen sensing adaptation, lower load range, bank 1
P1127 Oxygen sensing error by means of short test, bank 1
P1128 Oxygen sensing adaptation, idle range, bank 1
P1130 Oxygen sensing adaptation, idle range, bank 2
P1132 Oxygen sensing adaptation, upper load range, bank 2
P1133 Oxygen sensing adaptation, lower load range, bank 2

Last edited by boxster6354; 08-13-2012 at 01:55 PM.
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Old 08-13-2012, 02:19 PM   #4
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Thanks for the info. I need to close or lock this thread because this other thread of mine is
covering the same issue. (sorry about that)

http://986forum.com/forums/general-discussions/36783-can-anyone-explain-these-codes.html#post301487


UPDATE:

Fuel checked out to be normal. (Thanks guys at the NM department of Agraculture) After getting into the fuel tank
and removing the Fuel Level sending unit, it was easy to spot the culprit. Broken clips that should have been holding
the pressure regulator in place were not. A quick online order to pelican parts and I was up and running an hour after
my part arrived. Car runs like new again.

Last edited by 986Porsche986; 08-17-2012 at 01:52 PM.
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