Question about 2002 Mazda MPV
The check engine light is flashing. The DTC are P0122 TPS "A circuit low imput, P0505 Idle Control System problem. A mechanics mentioned that TPS need to be changed (body + sensor) which cost $286 for the park alone. He said the sensor is not serviceable. I found that the sensor its self only cost $35 from Advanced Auto Part. Is it true that I have to change both TP body and sensor together?
I'm not sure if you have to change both or not but at the price gap Advance has on it I wouldn't believe much they told me. You can probably get on a search engine on your computer and find your answer. There is a 'you tube video' about everything in the world, I am sure you can find out there. If not that I would definitely seek another mechanics advice. You can call the dealer and ask the service technician foreman and he will tell you the truth. Sounds like the guy at Advanced has a payment due on his Yacht and wants you to pay it. I use AutoZone for just that reason. Good luck and sorry I can't tell you exactly what you need to know. All I can tell you is what I would do if it were mine. Best of luck!
Col. Dana Gillespie
Posted on Mar 23, 2014
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Posted on Jan 02, 2017
SOURCE: #5 cylinder misfire
I have a corolla and had #4 cylinder misfire also diagnosed at autozone. After changing the spark plugs, problem persisted, along with the same error code, so they recommended changing the spark plug wires, and that is what fixed it. I would have changed the rotor cap too, but was low on dough. Glad that was not the problem.
Posted on Dec 29, 2008
This problem sounds like ablown head gasket, this would make the oil mix in with the gas and would result in discolored smoke out of the exhaust pipe.
Posted on Jan 31, 2009
I replaced this sensor about 6 months ago. (If this is the sensor that is located near the firewall on the exhaust manifold under the ignition coil.) The only way to easily replace it, is to remove the MAF and air filter assy. then remove the intake plenum, remove the ignition coil, and then you'll have access to the sensor. You'll need a sensor removal socket. If the socket slips around the hex of the sensor, then you'll need to use a regular deepwell socket and cut the cable from the top of the sensor, or use a combination wrench that will fit it.
The most difficult part of removing the intake plenum is getting the nut loose from the EGR valve. DO NOT just remove the two bolts holding it to the intake plenum. It will not line up correctly during re-assembly and may not seal tightly either.
This took about a Saturday to do. You'll need new plenum gaskets to replace the old. While your at it remove the throttle body and clean the carbon from the ports that lead to the EGR valve and replace that gasket as well. The gaskets will run about $30.
Posted on May 04, 2009
blinking light means engine is misfiring. continuing to drive will severely damage the engine. The O2 should not be related to your engine misfiring
Posted on Nov 13, 2009
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