20 Most Recent 1998 Porsche 911 Carrera - Page 8 Questions & Answers

P1353 Valve lift control cylinder X - small lift Possible fault causes: - Fuel injector faulty or borderline (opens too late/ not long enough/ not enough/ leaking) - Valve lifter of the specified cylinder faulty (intake valve of the specified cylinder gets stuck during the small lift) P1372 Valve lift control, bank 1 Possible fault causes: - Insufficient oil supply for faulty bank 1 (e.g., due to faulty scavenging restrictor in the cylinder head, dirt in the oil circuit, ... ) - Greatly differing exhaust backpressure values between the banks (e.g., due to constricted or blocked opening of an exhaust branch) - Loose contact or corrosion on connectors or lines - Solenoid hydraulic valve for valve lift control on bank 1 faulty - Incorrectly adjusted timing of the intake or exhaust camshaft of a bank - An oxygen sensor is aged or faulty P2404 Leakage diagnosis pump, Reed switch Possible fault causes: - Vacuum system leaking - The system consists of the mechanical vacuum pump (on the vehicle engine), the leakage diagnosis pump, the intake pipe switch-over valve and, where appropriate, the exhaust flaps in the rear muffler - Vacuum pump has mechanical fault - Tank vent valve stuck in closed position - Purge-air line between tank vent valve and carbon canister blocked - Short circuit to B+/ground or open circuit in signal line - Leakage diagnosis pump faulty

You should have to enter a code to make the radio operational again. This is an anti-theft feature.

I recently tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my jcb 3cx site-master. It would'nt move forward or reverse, engine was good both solenoids for forward and reverse worked, but still couldn't diagnose the problem. I don't have much technical knowledge but I just followed it step-wise, and now it works perfect! covers wiring, diagrams, torque specs, PCV, everything got it from www.reliable-store.com

it should be on the vehicle vin plate under the hood and also on the engine block

Apparently a general warning light. Possibly low gas warning.

Left side of the engine, from front to back - 4,5,6 Right side of the engine, from front to back - 1,2,3

try using a scan tool to reset the ECM

need to determine if its a vacuum unit or electric motor, vacuum unit it will be a leak on the feed or the expansion valve leaking. electric. motor weak or the threads on the adjustor warm. and some have an updated version electric. is a all in one adjuster plastic. there are switches inside the housing, theses can become damaged and the unit needs replacing.

Have you googled for it?

The higher octane is less prone to detonate during the compression and the computer can advance the timing to take advantage of this. If you use a lower octane than recommended the knock sensors will detect any premature detonation and the computer will reduce the timing to account for the earlier detonation. ie a bit less performance.

Even though this video shows you how to open a hood with a dead battery, the same applies to the trunk.

Engine is gas starved so check fuel filter or fuel pump.

Find the pump, likely attached to resevoir, check the wires there and back a bit...maybe a disconnect on that harness. If ok, have someone hit "spray switch" while you check for voltage on that harness. If voltage (12vdc) present, likely bad pump.

Are you sure of the year? I don't believe they made the 924S until 1987. The 1987 has 147hp and the 1988 has 158hp

You definitely have a problem with the charging system. As it is, the engine and other electricals are running your battery down. You need to put a voltmeter on the battery with the engine running to verify no charging. When the alternator is working and charging, the voltage will be about 14 volts, or somewhere between 13.5 volts and 14.5 volts. It may not even crank the engine over fast enough to start if your battery voltage is now under 12 volts. Then you would need a boost, but if alternator is not working, what charge you now have in your battery may be quickly depleted and the engine will shut down. Test the alternator as I stated, or take it off and have it tested at a parts store.