Question about 1998 Chevrolet Cavalier
Failed emissions testing-replaced gas cap. light still on
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Posted on Jan 02, 2017
SOURCE: abs and hand brake light
Check your master cylinder switch in the res. is not stuck down. When started is the light off until you go over 15 mph? If so check your abs relay. Good luck
Posted on Aug 03, 2008
there probably isn't a radiator cap. some cars only have a cap on the resivior tank. if your coolant is low, it'll show in that tank. follow your upper radiator hose to engine. thermostat should be at the end of it, depending on what engine you have
Posted on Dec 01, 2008
P0440 - Evaporative Emission (EVAP) System
evaporative emission (EVAP) system has a large leak.
Check the gas cap or vent valve. these are the most common problems.
The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the Fuel tank pressure sensor (FTP). When the sensor indicates a small leak in the EVAP system, this code is set.
Here are some additional causes.
* A small leak in any of the EVAP hoses or fuel tank hoses
* A small leak in the purge valve or vent valve
* The EVAP Canister may be leaking
Posted on Jun 06, 2009
po341 is camshaft position sensor A bank 1 ckt range/perf and po122 istps/pedal position sensor A curcuit low input this is throttle position switch on side of throttle body!
Posted on Jun 17, 2009
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