2003 Vauxhall Vectra temp gauge

Temp transmitter ?

The sensor is in the new therostat housing and the temp comes up when the car is stood so the sensor seems to work. Thanks for the answer,any other idea's ?

Buddies.

Is that the sensor for the gauge ? On some cars that sensor is for the ECU / rad . fan and there was a seperate transmitter for gauge usually in cyl. head .But maybe it is right , not sure on that car .

Thanks for the answer I will check.
Buddies.

As the gauge works when the car is idling I assume the sensor in the stat. is talking to the gauge ? It's driving me nuts.!!


Thanks for the rosponse.

Buddies.

Remembered this concerning the wiring on some from previous post , could check it out .


Car Vauxhall Vectra 1.8 LS Petrol Manual.
Year 2001
Owner John Spence
Posted 25 11 2009

Ref#:
3457
The Problem

My son bought an '01 Vectra 1.8 a few months ago and, from a cold start, the temp gauge remains firmly rooted to the bottom whilst driving any distance. If you stop and let the engine idle for 3-4 minutes the gauge will rise to normal, the electric fan cuts in and all is well. Start driving again and within a few minutes the gauge has dropped to the bottom again.
The engine warms up quickly, the heater works beautifully.The thermostat appears to be working fine.
I have'nt changed the transmitter but I don't see how the sender can differentiate between idling and driving along.
Any ideas please?


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Solution 1
whittingehame
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Since: Oct 2009
Posts: 387 | Fixes: 3778
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Suggested Solution

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Posted on 2009 11 27

As you say everything else ok , before you replace transmitter you could check this article from another forum if it applies to your car .


" well its is basically suppling a new earth wire for the maf sensor and the temp sensor. the original wire /earth point via the ecu fail , you would need to find the yellow wire from the maf and the brown cable from the temp sensor these wire join together in the trunking above the injectors, remove the cover, find the wires and splice into them a new wire, run this through the trunking and out near the ecu which is bolted to the engine, put a tag/eye terminal on the new bit of wire and using the earth wire bolt that is on ecu as a earth . this is a known fault and your local dealer should be aware of this, it is field remedy 2033 hope this helps "

And

2000, 1.8i, Intermittent brief mis-fire at speed - topbloke
sensor is the for the ecu but is a coolant temp sensor front of head offside near top hose two wires 1 blue other brown remove trunking and add a wire from your new one to the brown making it a y shape Regards TB

Cant say if this works with your year or not, but a lot of temp transmitters had this fault with earthing and even just unscrewing a couple of turns and retightening made a better contact , fixing fault .
Hope this helps .

Where is the maf sensor, and what is it ?

It is on the air intake pipe between the airbox and the engine. MAF = Mass Airflow Sensor .



http://en.wikipedia.org/wiki/Mass_flow_sensor