Q: Won't Start in rain

asked by on

My Safari AWD won’t start when it rains. If I crank it every few minutes for an hour or two it might start. And my van will start right up if you wait for it to stop raining and dry off a little. Then it runs perfect! The electronic brake monitor was changed at the local GM dealer and cat went out of it. Do you know why this happens? Thanks.

Hello. It sounds like moisture may be causing the camshaft sensor or crankshaft sensor to give an improper reading of engine timing. The camshaft sensor and crankshaft sensor read the timing of each respective shaft. If one or both of these sensors are faulty or being affected by the rain, it may be difficult to start that engine.

It is possible for corrosion in the connector to cause this type of problem, and corrosion is created by excess water/moisture. An issue with the battery and charging system could also cause problems with starting the engine when it is raining. Have a certified technician, like one from YourMechanic, inspect your battery and charging system, as well as assess your problem to determine if the camshaft position sensor and/or crankshaft position sensor needs to be replaced.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Won't Start in rain

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: Q: what is the firing order

Hello. The firing order of your car is 1-3-4-2.

Q: Whining engine, goes with engine, in neutral or on the road 1998 GMC Safari

Hello - the whining noise you describe, which is related to engine speed, could be a worn alternator bearing, worn power steering pump (check your fluid level) or possibly the engine fan clutch. Any of these two can make an...

Q: Q: AC blowing out warm air again

If this happened right after the work was done then you either have a leak in the system that allowed the refrigerant to come out or there is an electrical issue. It is possible that this was overlooked if the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...