I have cleaned my map sensor 3 times in like 5 months and each time my gas mpg gets better fro a short time then back to horrible. I just cleaned it again a couple days ago and i am wondering do these things last forever or should they be replaced every so often. This one is the original one i believe.
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Do map sensors last forever
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MAP sensors don't usually require cleaning. they usually only go bad on the electrical side. And that's only if they get a power surge or an electrical short.
Are you seeing a lot of dirt/carbon and oil around your MAP sensor inlet and in the vacuum hose? If so you should look into maybe cleaning your vacuum hose, and the EGR and PCV systems. Along with the intake tubing and replacing your air filter.
Look at the intake, EGR, IACV and throttle body cleaning threads. They might help!
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Originally posted by GhostAccord View PostMAP sensors don't usually require cleaning. they usually only go bad on the electrical side. And that's only if they get a power surge or an electrical short.
Are you seeing a lot of dirt/carbon and oil around your MAP sensor inlet and in the vacuum hose? If so you should look into maybe cleaning your vacuum hose, and the EGR and PCV systems. Along with the intake tubing and replacing your air filter.
Look at the intake, EGR, IACV and throttle body cleaning threads. They might help!
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They don't work the same as a MAF sensor. The sensor doesn't usually get dirty and require cleaning. It would be more the passage going to the senor that would require cleaning. I find it very strange that you are seeing a change in MPG from cleaning just the sensor. It could very well have a ruptured disc inside the sensor. That is how these sensors work. there is a pressure disc inside the housing that will move with changing pressure in the intake/vacuum hose. This movement changes resistance inside the sensor causing a change in signal to the ECU. If this disc was ruptured, then adding a fluid into it could create a temporary seal, once it evaporates it goes back.
try a local junk yard and see if you can grab one. Any MAP sensor with the same connector will work for testing purposes. it can even be one from a throttle body mounted MAP vehicle. As long as you can hook up the electrical connector and the vacuum hose it will work.
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Originally posted by GhostAccord View PostThey don't work the same as a MAF sensor. The sensor doesn't usually get dirty and require cleaning. It would be more the passage going to the senor that would require cleaning. I find it very strange that you are seeing a change in MPG from cleaning just the sensor. It could very well have a ruptured disc inside the sensor. That is how these sensors work. there is a pressure disc inside the housing that will move with changing pressure in the intake/vacuum hose. This movement changes resistance inside the sensor causing a change in signal to the ECU. If this disc was ruptured, then adding a fluid into it could create a temporary seal, once it evaporates it goes back.
try a local junk yard and see if you can grab one. Any MAP sensor with the same connector will work for testing purposes. it can even be one from a throttle body mounted MAP vehicle. As long as you can hook up the electrical connector and the vacuum hose it will work.
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