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1970-1995 Range Rover Classic
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48 Posts
Discussion Starter #1
Hi all,

Owner of a 1995 LWB with the 4.2. This summer a buddy and I rebuilt the engine from the crank up. After sorting out a few ignition wiring issues, the car started right up and idles very strong now.

However, the coolant gauge is pegged to the cold side, even after ~20 minutes of running. IR thermometer says the inlet temp is around 210 degrees, so I would expect to see something on the gauge.

How do I go about diagnosing the problem? From what I can tell, there are three coolant temperature measuring points:
1) the two pronged connector just above the thermostat
2) the screw-in "coolant temperature sending gauge" that connects to a small barrel connection on the wiring harness
3) the fuel injector-connector looking clip that fits into the intake manifold (has the same connector type as the fuel injectors)

How does this system work, and what should I look at to find the problem?

Thanks
 

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Premium Member
1970-1995 Range Rover Classic
Joined
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455 Posts
1- aircon
2 to instrument. If you measure 210 your pistol would be broke and /or your Range would be running on vapour
Measure the resistance cold and at ~100°C when you put the end in near on boiling water.

3 air intake?

Enviado desde mi SM-A720F mediante Tapatalk
 

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Registered
1995-2002 Range Rover Classic
Joined
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1,413 Posts
Hi all,

Owner of a 1995 LWB with the 4.2. This summer a buddy and I rebuilt the engine from the crank up. After sorting out a few ignition wiring issues, the car started right up and idles very strong now.

However, the coolant gauge is pegged to the cold side, even after ~20 minutes of running. IR thermometer says the inlet temp is around 210 degrees, so I would expect to see something on the gauge.

How do I go about diagnosing the problem? From what I can tell, there are three coolant temperature measuring points:
1) the two pronged connector just above the thermostat
2) the screw-in "coolant temperature sending gauge" that connects to a small barrel connection on the wiring harness
3) the fuel injector-connector looking clip that fits into the intake manifold (has the same connector type as the fuel injectors)

How does this system work, and what should I look at to find the problem?

Thanks
more than likely you have something misconnected or disconnected, the wiring diagram is on the rave. you can follow the blueprint for the 94 or 95 discovery.
the connector should be a single bullet or spade type around the thermostat housing.
 
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