Starting problem when engine is hot

Tiny
FREDLEXUS
  • MEMBER
  • 1993 LEXUS SC 400
  • 4.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
After driving the car for more than twenty minutes and shutting it off, and then trying to start it again within a few minutes it takes about five times before it will turn over some times.
Do you
have the same problem?
Yes
No
Sunday, March 25th, 2018 AT 2:10 PM

1 Reply

Tiny
KEN
  • ADMIN
Hello,

Yes, this sounds like a classic engine coolant temperature sensor that is not responding correctly.

Here is a guide to what you will be in for when changing the sensor out:

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Here is the location for your car and the sensor test:

Resistance Value
-4 F (-20 C) 10 - 20k ohms
32 F (0 C) 4 - 7k ohms
68 F (20 C) 2 - 3k ohms
104 F (40 C) 0.9 - 1.3k ohms
140 F (60 C) 0.4 - 0.7k ohms
176 F (80 C) 0.2 - 0.4k ohms

Coolant temperature sensor on top right of cylinder head, near ignition coil.

Please let us know what happens.

Cheers, Ken
Was this
answer
helpful?
Yes
No
Tuesday, March 27th, 2018 AT 12:12 PM

Please login or register to post a reply.

Recommended Guides