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Have a problem with warm start

Tiny
DOWKO1
  • MEMBER
  • 1993 MERCEDES BENZ 300SE
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
Starts from cold fine can run few miles but when returning to start while warm will not start until it cools down. Also, when in park idles very high. Could this be crankshaft position sensor or fuel pump regulator? Maybe ovp. Please help
Thursday, December 20th, 2018 AT 2:12 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,840 POSTS
Hello,

It sounds like you have a engine coolant temperature sensor that going out. Here is a guide to help walk you though the steps and a diagrams below to show you how on out car:

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

Check out the diagrams (below). Please let us know what happens.
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Saturday, December 22nd, 2018 AT 2:22 PM

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