cold start w124
Thread Starter
Junior Member
Joined: Oct 2004
Posts: 30
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E240 2004
cold start w124
can somebody locate me coolant temperature sensor on the M102 engine. I want to check a problem in my car that every morning it takes cranking of 5 seconds to start and after that it is perfect. May be coolant temperature sensor is a reason
regards
regards
Super Member
Joined: Jun 2003
Posts: 595
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From: Middlefield, CT
1994 E320
There are 3 temp sensors on the cylinder head: KE, climate control, and the gauge. The climate control sensor is a 2-pole connection with blue tape on the wire. The KE temp sensor is one of the 1-pole sensors.
It is possible the cold start valve is out of order. The valve is a blue device on the intake manifold. Remove it and crank the engine. Hold the valve over a cup and see if any fuel comes out.
It is possible the cold start valve is out of order. The valve is a blue device on the intake manifold. Remove it and crank the engine. Hold the valve over a cup and see if any fuel comes out.
Last edited by Jer; Oct 19, 2004 at 10:21 PM.
Super Member
Joined: Jun 2003
Posts: 595
Likes: 0
From: Middlefield, CT
1994 E320
The job for testing the function of the cold start valve is very complicated and requires some special tools. I can still send it if you want. For now here are the pin assignments for the coolant temp. sensor.
Thread Starter
Junior Member
Joined: Oct 2004
Posts: 30
Likes: 0
E240 2004
i read on forums that to check this sensor, check the resistance between two connectors at different temperatures, i have the EHA table with me but whuch are the two connectors out of these four to check the resistance (Ohms)
