Skip the auto shop - Our mechanics make house calls

Q: Map sensor car won't start up good ?

asked by on

My CEL code in my rsx type s flashes 5 indicating that my (MAP) sensor manifold absolute pressure sensor is whats wrong. my car hesitates to start sometimes won't start at all if I changed the map sensor will the car start up new what to do ? I checked the spark plugs and cleaned them properly help please the only problem with the car is starting up once started up the car drives fine it's starting the car is was difficult it sometimes will leave me stranded but the car never stalled on me it just I gotta hold the key on for the car to keep cranking and start

My car has 128543 miles.
My car has a manual transmission.

Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the sensor is not producing a good signal.

At that point, it will use other methods to determine the fuel rate, such as pre-programmed fuel maps, throttle position, etc. I would suggest replacing the MAP sensor and retesting. If you would like to have it checked first, a certified technician from YourMechanic will be able to scan your vehicle and test components to determine the root cause of your starting issue before making a repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Replaced starter, car still not starting up.

Hi, thanks for writing in. I'd be happy to help. This could be due to a variety of issues. It sounds like the car eventually starts, which is a good sign that you have fuel and spark, which means the...

Q: I just did a radiator flush on my car and now I'm loosing all my coolant out of my reservoir and my radiator what could be the iss

Normally, the cooling system pressure should be around 16 psi so if you have a reading of 13 psi, that would be considered low. If you are positive that you have a leak, I would recommend locating the leak and...

Q: Is the water pump internal,or external on a 2003 Mitsubishi Outlander

Hi there - the water pump on this model is on the external face of the engine block, as are most water pumps. However, it is "behind" the timing belt components, which must be removed to change the water pump....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...