Ecu & Coolant Sensors

[Ciaran76 1]

Hi

 

My mechanic thinks replacing these two sensors will clear up a starting issue - I don't suppose anyone could tell me the part numbers?

 

Thanks

Ciaran

[welshpug 1,661]

they are one and the same thing, the blue one.

 

pug/citroen part number is 0242 46, gsf part number 929BM0140, bosch part number 0 280 130 026

 

facet part number is 7.3128, which cross references to several hundred applications.

[bondo 6]

I think he means the engine coolant temperature sensor that tells the ECU whether it is hot or cold and adjusts the fueling accordingly. Should have a blue plug on it and is located next to the big mushroom shaped oil pressure sender at the back of the head under the air filter box (phase 2 XU).

 

They are Bosch units and are the same as the BMW e36.

[bondo 6]

pah too slow

[Ciaran76 1]

Thanks gents.

[205turbo 32 2 Cars]

i just bought a brand Bosch one off ebay for £5.95 delivered

 

http://www.ebay.co.uk/itm/400394674865

Edited February 26, 2013 by 205turbo

[bondyshambles 23 1 Cars]

Have you fitted it yet and did it work? A minefield of part no's and then it says "There may be alternatives".

[gavbrum 18 1 Cars]

i just bought a brand Bosch one off ebay for £5.95 delivered

 

http://www.ebay.co.uk/itm/400394674865

All gone

[ALEX 98 1 Cars]

2 sensors... hmmm bet he's looking at the Temp gauge and switch for the dash light and gauge!

Sounds like your mechanic hasn't a cllue.

 

The Coolant Temp sensor as mentioned is the blue one (near those two)

It's easy to test it with a multi meter.

If you get a short circuit, it's that that's f**ked.

Should read about 300ohms or something.

Edited February 26, 2013 by ALEX

[ALEX 98 1 Cars]

Give the symptoms of the starting issue and I (we) might be able to help.

[welshpug 1,661]

Borrowed from the 306gti6 forum FAQ page, its actually for the green 1920 K9 sender, but its the same resistance values.

 

 

 

[Ciaran76 1]

Give the symptoms of the starting issue and I (we) might be able to help.

 

To be fair to him, he doesn't really know much about 205's - he's a Volvo & BMW specialist. Hard to find a 205 mechanic in Belfast unfortunately.

 

Symptoms - I have to turn the car over 5 or six times in the morning / evening to get it started. He suggested replacing the blue plug to see if that would make a difference. In the last year I've replaced battery and alternator. It's only got this bad in the last month or two. I'm also getting horrendous MPG! less than 15, although my daily journey is only 4 miles.

[welshpug 1,661]

Sounds like you need to do the basics, test everything, as detailed in the haynes manual, to start with all you need is a multimeter.

 

A fuel pressure gauge would be useful also.

[farmer 328 1 Cars]

Motaquip do a really cheap one i paid about 3-5 quid for mine.

[Ciaran76 1]

I'll be honest, my mechanic knows more than me!

 

I don't have any knowledge of what goes on under the bonnet and with 3 young kids I don't have a second this past while to tinker with the car.

 

[welshpug 1,661]

I would be hunting for a better mechanic!

[Ciaran76 1]

I would be hunting for a better mechanic!

I've tried but there is no one I've come across that's been recommended.

 

To be fair to him though, he's always been able to sort any problem I've previously had.

Edited February 27, 2013 by Ciaran76

[welshpug 1,661]

if he really is good on old BMW's, he really shouldnt have any issues whatsoever, tell him to treat it like a mid 80's BMW, they used Jetronic AFM's and the very same ecu temperature sender, a few even used the very same tachymetric relay.

 

as did many Porches, 924/944.

[ALEX 98 1 Cars]

Whats the plugs look like?

While you're at it, check the condition of the spark, If it's orange, you have a bad connection somewhere,

[Richie-Van-GTi 72 2 Cars]

^{What has he done so far? Horrendous MPG and poor starting to me sounds like either the temp sensor as he suggested or simply down to poor set up of dizzy position, AFM setting and idle screw adjustment. Sometimes pays to start from scratch with the set up of these cars before swapping out parts on a whim. He should be fine with a basic set up from scratch, as said earlier its not much different than any early 80's car and its detailed in the Haynes how to do if he isn't sure.}

[MikeC 10]

Did changing the coolant sensor help solve your starting issues in any way?

[weetel 0]

I would be interested to find out if this helped.

[soundguy 13]

"____Symptoms - I have to turn the car over 5 or six times in the morning / evening to get it started. He suggested replacing the blue plug to see if that would make a difference. In the last year I've replaced battery and alternator. It's only got this bad in the last month or two. I'm also getting horrendous MPG! less than 15, although my daily journey is only 4 miles._____"

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Did you get this sorted? My suggestions (as a relative newb around here) are, you could well have a couple of issues - the low MPG does sound like the ECU temp sensor - but the starting could be a dodgy ignition amp. I'm thinking of fitting one of these: Maplin/Velleman Ignition Amp Kit (VE00A) - £11.

 

Maybe someone else could clarify, from what I understand, a worn distributor rotor can also lead to poor starting...

Edited May 29, 2013 by soundguy

[Ciaran76 1]

I haven't had a chance, got the sensor here but not had time to leave it in. Going to try and leave it in next week for an oil service as well as getting drivering lights replaced.

Edited June 14, 2013 by Ciaran76