how do i know if i have an bad PCM

ANSWER : When you say you have three bad sensors I can only assume you have had them tested and the end result is three bad sensors. If they tested bad then they should be replaced. The power steering sensor senses the load of the steering on the engine so it can raise the idle during parking maneuvers. The O2 sensor is used for fuel control and it may effect engine power and fuel mileage. The camshaft sensor cay cause no starts, engine running problems and all three will turn on the check engine light.

ANSWER : You should have front and rear brakes checked for thickness to see if they are in need of replacement. You should also have an expert check the carburetor as it may have problems with dirt of debris clogging the jets. If you need help with this diagnosis, a certified then diagnose the needed repairs the carburetor needs to repair or replace it. You may have problems with dirt and debris in the carburetor clogging the jets.

ANSWER : Hello there. Typically jump starting a vehicle doesn’t trigger an OBD-II error code. However, one of the most common misdiagnosis issues with the P-2270 is replacing the O2 sensor before diagnosing if there are any exhaust leaks. Obviously, you’ll want to check for the exhaust leaks first, repair the damaged component, and then clear the codes before scanning the vehicle again. Sometimes the electrical harness attached to the O2 sensor is damaged or dirty which will also trigger this error code. The noise and vibration may be an indicator of a loose exhaust pipe, which may be the source of the error code staying on. If you need any help, have a technician from YourMechanic come to your home or office to diagnose your Check Engine Light and make the necessary repairs.

ANSWER : Hello. The bad coil wouldn’t have caused the crank sensor to fail. Crankshaft sensors are the most common failure on this engine so it should just be a coincidence. I would use a scan tool just to make sure that there is no rpm reading before replacing it though, as there are some other problems that can occur, but are not as likely. If you need help with this, consider having a technician from YourMechanic come to your home or office to diagnose this problem with a scan tool and replace the crankshaft sensor if necessary.

ANSWER : Hi! That "sluggish starting" (slow cranking speed) is the most common symptom when a battery is at the end of its life. The age of your car is also just about in the normal range for how long batteries last. You are correct that it is very unlikely to be a failing starter. Here’s the good news: many automotive service businesses will test a battery for free (or close to it); it’s one of the least costly things to have wrong with your vehicle; it didn’t leave you stranded. I suggest having it tested today! If you’re trying to avoid having your car in a shop, consider YourMechanic, as a certified technician can come service your battery at your home or office to fix this issue.

ANSWER : Without knowing the codes received and the pinpoint test you are doing or the type of chip used I would not be able to say the PCM should be replaced with the information provided. You would not normally see more than battery voltage in any test and some tests may say battery voltage and if you read more than 12 volts would be a good reading. I would recommend doing the pinpoint test again to verify the test and codes received before replacing the PCM.

ANSWER : Hi there. If you are working on an older OEM Impala, it’s more likely than not that the wiring is your problem. In some cases, when you try to start the vehicle and you get a single "click", it’s caused by the battery not having enough cranking amps. However, it can also be caused by a faulty ground, a bad starter or ignition relay or the starter itself. If you’re restoring the vehicle, it’s probably a good idea to by a new wiring kit and start from scratch, by also replacing the starter and ignition relay as well. Also, if you’ve recently painted the interior, check the ground connection; as some times fresh paint will cause a bad contact.

ANSWER : Any bad part in the drive train can put additional stress on other parts. I could probably draw a line from a bad wheel bearing to a bad CV joint. Not so much the other way. However, it might seem that way because the parts have a similar life span. Once one part fails, the others may come soon after. If your car really only has 45000 miles it seems a little soon for either one to be failing unless you are living and driving in bad northern winters. If your car is making sounds in either the CV or the wheel bearings, you can have it checked out at your convenience by contacting Your Mechanic. They can send a technician to your home or office to check out your Honda and tell you what it may need.