well a p0138 is an o2 sensor problem and as for the P0455 the evap system has a very large leak over 40 microns and it may need a fuel cap the P0442 and the P0455 usually go together one is the cause of another
I have had similar problems. I would try replacing the air charge temperature sensor. If you still have trouble, try heating the sensor by taping it to a radiator or heater hose. If this fixes the problem, heated air from the shroud around the exhaust manifold is not reaching the air cleaner, causing the sensor to read to cold of a temperature and making the engine run too rich. Hope this helps.
if there is no camshaft position sensor then why am i getting codes for it and how do i eliminate those codes?
a check engine light that flashes while driving has nothing to do with the speed sensor or alternator a flashing engine light shows that there is problem that is causing catylitic conver damage for instance if you had a bad spark plug or spark plug wire that was causing a missfire then the light will flash there is no other reason for the light to flash
Location of sensor
Several possibilities: Engine issues -Clogged fuel filter, Crank position sensor or cam position sensor going out intermittently (should throw a code), ignition coil breaking down(unlikely - would usually cause stumbling all the time), bad gas or water in the gas(unlikely),oxygen sensor (would cause one or two jerks during a typical acceleration, should throw a code). If it's the transmission, it may be "slipping" or have a clogged filter or valve body causing hard shifts.
Provided the catalytic converter, oxygen sensor and related components are good working order, no.
Tough question,untill you find out whats causing the miss to start with.Could be 1 of these problems making it miss. ( Bad spark plug, plug wire, Bad distributor cap, Injector problem, emission sensor shorted are grounded- O2 sensor / oxygen sensor, Map sensor, vacuum leak, Low engine compression / burnt Valve. ect....
The ignition timing will be off causing misfiring among other problems.
If it had a bad O2 sensor the "check engine" would be illuminated and a code would be set indicating which sensor is at fault. You probably have other problems causing that backfire to occur.
There are many sensors that could be called the emission sensor for this vehicle, but I suspect you might be referring to the oxygen or O2 sensor. It will be found in the exhaust manifold, close to the connection with the exhaust pipe. Hope this helps!
Not positive on C6 but on my 93, there was a front mount "optispark" ignition module which included a crank position sensor mounted straight on the front of the engine behind the crank pulley. They were vented and notorious for getting damp inside & causing problems since they were optical. At least that was the explanation I heard.
Could be any number of things ... a short list: * low engine oil level * low cooland level * emission problems * spark plug or ignition problems * oxygen sensor defect You can take the car to most any auto parts house and have the "code" read for a small fee. That will tell you exactly what may be causing the problem.
O2 sensor circuit high voltage (bank 1 sensor 2)
PO452 is the name of the error code you are receiving. The evaporative emission pressure sensor mount plug could be disconnected so that should solve the problem.
Emission parts contain a number of things such as; spark plugs/wire, O2 sensor, pcv valve, vapor canisters, MAP sensor idle control valve, etc
You cannot disable a vehicle speed sensor on any EFI vehicle without causing a host of problems. I'm not sure why anybody would want to.
MAF sensor is the Mass air flow sensor...with out it your engine doesnt think its getting enough air ..causing rough idle...no acceleration etc.. the average cost of the sensor is $156.00