Q: will a temperture switch cause an engine not to start?

asked by on

I replaced the icm in the distributor, it started then once it heated up it shut down. would not start till the next morning, the same thing it heated up it shut down. I pulled the code 15, I was told to unplug the temp switch and it should still run? will the temp switch cause it not to start at all? Or could it be the map sensor, or fuel position sensor? I am going to try the temp switch first.

My car has 96000 miles.
My car has an automatic transmission.

If the computer set code 15, I would replace the coolant temperature sensor. Check the connector for it as well. If it is corroded or damaged, solder in a new connector. This sensor can cause the engine not to start. Unplugging it will work if the sensor itself is bad, but if the connector is bad, it will not have any effect. Sometimes coolant seeps through the sensor, into the connector. This causes an electrical resistance that will change the reading that the computer detects.

If the engine still stalls after this repair, unplug one sensor at a time and see if it starts. Do this for the MAP, and TPS. If that doesn’t work, it could be the pick-up coil in the distributor, or the ignition coil. The pick-up coil will cause no spark, and no injector pulse. A faulty ignition coil will cause no spark.

I’d suggest getting your car inspected by a certified technician, such as one from YourMechanic, who can diagnose your starting issue and help you fix it accordingly. Good luck.

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. will a temperture switch cause an engine not to start?

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: The vehicle runs like a champ but it shifts hard from 1st to 2nd gear. Any advice to be appreciated

Hi there. The 1 - 2 shift accumulator spring has broken and needs replace in the transmission. To do this, drop the transmission oil pan and oil. On the back right side of the transmission on the inside you will...

Q: My car shakes or vibrate at a stop

Hi there: Unfortunately, neither of those three error codes are associated with a component that is causing your vibration issue. The P0135 is related to the O2 sensor, and P0421 and P0401 are related to catalytic converter sensor issues. I...

Q: 93 Buick will not excelerate passed 30 put in new transmission hose and radiator. Can u please tell me what u think the problem is

Hi there. In some cases, when you have acceleration problems after changing a transmission hose, the issue is related to either an obstruction in the transmission fluid lines or the torque converter not receiving or having enough transmission fluid (slipping)....

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...
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...
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...