Skip the auto shop - Our mechanics make house calls

Q: My car stalls with weather under 40' or moist out.

asked by on

It started a year ago. I went trough a car wash and suddenly, the car stalled. I did not know until I tried to accelerate away from the exit, it was in N. It did not happen again until six months later where it stalled in the winter. From then on, it continued to stall when it was under 40 degrees. We took it to the dodge dealership out where I live and they replaced the PCM twice. After no success and dragging us around, I took the car to two other mechanic shops my family trusts and has good connections with. One told us he had no idea and the other replaced the crankshaft sensor. I have gathered as much data as I can get. The car has a cold air intake (Was put on after the problem began but we thought it was fixed), a catback exhaust with 3' mufflers but 2.5' piping and a diablo trinity tuner. I have gotten three codes from my diablo. One was a Mass Air Flow Sensor, the other two are P0731 and the other is p2172. AIT replaced 3 times. New spark plugs and battery all 2016.

My car has 152000 miles.
My car has an automatic transmission.

A: Hi there. There could be two things that a...

Hi there. There could be two things that are contributing to your issues with the vehicle that are playing a big roll in this. First check the manifold absolute pressure sensor (MAP) on the engine. Check to see if the harness is free from moisture since the vehicle began stalling in a car wash. The sensor may have gotten wet and shorted out. The other thing is your transmission is probably slipping. Check the transmission oil to see if its milky or lighter than normal. If so, then the fill tube seal or the vent tube got water in them. Water in the transmission will cause the clutches to slip and burn. If you need further assistance with poor acceleration and strange electrical issues after a car wash, then seek out a professional, such as one from Your Mechanic, to help you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Convertible's top hit something & is stuck

The top will have to either be stowed or placed in the closed position manually as per the emergency close/open procedure and the top reinitialized in order to restore automatic operation. If the top will not reinitialize, then the...

Q: Malfunction sign on dashboard

Hello. There are two basic lights in a vehicle. Red lights typically mean stop the vehicle now or severe damage can occur. These are typically the battery light, temperature light, or the oil pressure light. The other color is amber....

Q: Brake fluid leaking

If the vehicle is leaking brake fluid, I would stop driving it, and have it serviced as soon as possible as your braking system is essential to road safety. Braking systems operate using hydraulic pressure, so any leaks are a...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...