Can a bad TPS sensor cause a bad MAP sensor?
For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor. Troubleshooting the sensor is the only way to determine whether the sensor or part is actually bad. On some models, you only need to remove a couple of screws to get to the sensor. 4.
What to do if your MAF sensor is bad?
It didn’t say your MAF sensor was bad, It said your MAF sensor detected a problem. Make sure the duct work between the air filter box and the intake manifold is intact, sealed and not cracked, including MAF sensor gasket. checking with propane won’t find that air leak. I would also entertain the idea of the dirty throttle plate.
What to look for when replacing a MAP sensor?
All electrical and vacuum connections to the MAP sensor should be verified before replacing the part. To give a couple examples of what to look for should you get a code 33 would be a vacuum leak, mechanical issue with the engine causing very low vacuum levels, or an electrical problem between the sensor and ECM.
Where is the mass air flow sensor located?
In most cars, a mass airflow sensor is installed at the air filter box. In the fuel injection system, the mass air flow sensor measures the air flow into the engine. The engine computer (PCM) calculates how much fuel to inject based on the mass air flow sensor measurements.
What should the resistance of the MAF be?
Check the resistance of the signal wiring from pin C on the MAF and pin 9 on the computer, you should see less than 2 OHMs resistance as well. For those with a cold air intake, try clocking the MAF by rotating the MAF to see If that helps.
Is there a magic setting for the TPS?
There is no magic setting for the TPS as the computer zeros out the TPS voltage each time it powers up. Instead you need to make sure the TPS isn’t out of range. In most cases the computer will provide codes 23 or 63 for a failed TPS (not there is no guarantee it will send those failure codes). Put the key switch to “run” position with engine off.
Why are my vacuum lines breaking on my fox mustang?
Often forgotten but important to check. Fox Mustangs come with a lot of hard plastic vacuum lines that will crack with age. It’s always a good idea to check all vacuum lines and replace broken pieces. The Carbon canister is often a culprit of vacuum leaks.