ECU Coolant sensor

[globetrotter]

Hi, there are 2 water coolant sensors on a 940 cylinder head, one for the temperature gauge and one for the ECU, Does anyone know the part number for the ECU one?
Thanks

[griston64]

https://www.classicvolvoparts.co.uk/...760+940+960%2E

[griston64]

Originally Posted by globetrotter

Hi, there are 2 water coolant sensors on a 940 cylinder head, one for the temperature gauge and one for the ECU, Does anyone know the part number for the ECU one?
Thanks

Going by a few previous posts ( LPT Joe springs to mind ) The Bosch ones are best and cheapo ones should be avoided

[jpliddy]

hi just asking is your gauge not working ? are you sure the problems one of the above .

[Laird Scooby]

Originally Posted by globetrotter

Hi, there are 2 water coolant sensors on a 940 cylinder head, one for the temperature gauge and one for the ECU, Does anyone know the part number for the ECU one?
Thanks

Why are you looking to replace it as in what are the symptoms you've got?

[globetrotter]

Originally Posted by jpliddy

hi just asking is your gauge not working ? are you sure the problems one of the above .

Hi, the gauge is working perfectly, code 1-2-3 has triggered engine management light, which is ecu coolant sensor missing signal /Thanks

[globetrotter]

Originally Posted by Laird Scooby

Why are you looking to replace it as in what are the symptoms you've got?

Hi Dave, the gauge is working perfectly, code 1-2-3 has triggered engine management light, which is ecu coolant sensor missing signal, need to know correct Bosch part number / Thanks Steve

[griston64]

According to book the part numbers are

Volvo - 1346030
Bosch ( Luxor ) - 0280130032

[griston64]

see pages 34/35

http://www.myvolvolibrary.info/Tech_...DataPocket.pdf

[Laird Scooby]

Originally Posted by globetrotter

Hi Dave, the gauge is working perfectly, code 1-2-3 has triggered engine management light, which is ecu coolant sensor missing signal, need to know correct Bosch part number / Thanks Steve

Bosch part number is 0 280 130 032 and i believe there is an alternative that ends 039 or 069 as well.

Had a similar fault on another thread recently, despite a few new sensors it was still triggering the code and turned out to be the wiring and plug to the sensor so worth checking that too.

Also before you dive in and start checking, pull fuse #1 for about 30 seconds and refit. Check the codes are clear then take it for a drive and recheck them. If it still shows the same and you decide to fit a new sensor, pull fuse #1 before you start fitting it and refit the fuse after.

PS the sensor is located on the head under #2/#3 inlet tracts from the inlet manifold, not the one near #1 tract as that is for the temp gauge.