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Author Subject: Lambda.
mattgti6phase2

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Post #1
Hi guys just a quick one.

Just recently my car has had a lambda issue. Pug planet says permanent O2 sensor fault. I've changed it for a brand new Bosch one which might i add only cost £43 all I'm Big grin anyway plugged it in to diag it works then chucks the fault up again. There are no breaks in the wiring at all.

I'm now thinking ECU temp sensor fault? Causing the car to over fuel therefore causing the lambda to have a fit? Any advice welcome many thanks.

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Team Nile 6 Superman
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Posted 19th Jan 2013 at 12:41
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beez_neez_gt

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Post #2
What are the engine's symptoms?

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Posted 19th Jan 2013 at 12:47
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #3
Have you checked the wiring for continuity then?

Also, how is the car behaving, using a lot of fuel/smoking etc?

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 19th Jan 2013 at 12:47
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mattgti6phase2

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Post #4
stan_306gti6 wrote:
Have you checked the wiring for continuity then?

Also, how is the car behaving, using a lot of fuel/smoking etc?


Yes mate checked the wires for continuity. Also the lamda reads and works for a few mins then when the car warms up it chucks the fault up again.


beez_neez_gt wrote:
What are the engine's symptoms?


Just runs rich mate.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 19th Jan 2013 at 13:00
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #5
CTS is the next point of call then. Yes

Use the data from Autodata to measure it's resistance.

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 19th Jan 2013 at 13:07
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mattgti6phase2

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Post #6
Just changed the CTS. Where as before it would make no difference if I unplugged it now it runs fast idle when unplugged.

I'd assume the CTS was also at fault. Will get on back on diag ASAP.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 19th Jan 2013 at 14:38
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #7
Sounds good. Thumbs up

Let us know how you get on. Cool

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 19th Jan 2013 at 19:13
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mattgti6phase2

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Post #8
Since I've changed the CTS the car looses complete power then you press the throttle hard and nothing. Then all of a sudden the power will come back. I'm now confused, I put the old CTS back in and it's still the same so i dunno.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 19th Jan 2013 at 23:24
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #9
Hmm

That sounds more like a lambda or a MAP fault than the CTS causing an issue. What sort of revs does this new problem occur at Matt?

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jan 2013 at 08:24
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mattgti6phase2

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Post #10
Low rpm bud. MAP sensor is fine as is IAT sensor Crazy

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 20th Jan 2013 at 09:02
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #11
Low RPM deffo sounds like a lambda fault mate, despite the fact you've already changed it twice and checked the wiring. Maybe it's time to look at the data for the TPS. A fault with this would cause the lind of symptom you describe. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jan 2013 at 09:28
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mattgti6phase2

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Post #12
Interesting Hmm

The thing the draws me away from the lambda being at fault is when the last one died the car never behaved like this. The fault is intermittent and when it occurs no matter how hard you press the throttle nothing will happen and then with no warning it'll spring in to life again. It will also sometimes violently shake the car to.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 20th Jan 2013 at 10:19
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daver6

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Registered: 08 Aug 2010

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Post #13
I had the same issues with mine. Low rpm, part throttle and its like the fuel pump turns off, just dies. Let off throttle and it comes back.

I swapped my MAP and lambda and haven't had the issues again

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Posted 20th Jan 2013 at 10:28
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honestly3k

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Post #14
If you wana try my MAP sensor mate I'm only a stone throw from you....you could check how filthy Marilyn is. She has icicles hanging off her bumper it really is impressive LOL

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Posted 20th Jan 2013 at 10:32
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stan_306gti6 Forum Admin

Location: Kent

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Post #15
Marilyn...Laugh my ass off

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jan 2013 at 11:25
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stan_306gti6 Forum Admin

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Registered: 18 Jan 2004

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Post #16
I would recommend trying a known good MAP and TPS to try and eliminate them, so if you can meet up with Honestly3k it would at least rule them out.

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jan 2013 at 11:27
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mattgti6phase2

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Location: inside my 6 abusing the tarmac!!

Registered: 16 Jul 2010

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Post #17
I have a spare CTS in the garage that i could swap over. So will look at that when i finish work. As for the MAP sensor is it continues Chris I'll pay you and Marilyn a visit LOL

Is there a way of testing my spare CYS before i bother to install it?

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 20th Jan 2013 at 11:35
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline
Post #18
If you can find out the resistance values from Autodata, you should be able to determine whether or not it's a serviceable item Matt. Thumbs up

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 20th Jan 2013 at 12:18
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daver6

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Location: Durham

Registered: 08 Aug 2010

Posts: 2,379

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Post #19
Engine coolant temperature (ECT) sensor
Checking - Fig. 18

Technical Data

Temperature Resistance
10°C 3530-4100 W
20°C 2350-2670 W
30°C 1585-1790 W
40°C 1085-1230 W
50°C 763-857 W
60°C 540-615 W
80°C 292-326 W
90°C 215-245 W

Ensure ignition switched OFF.
Disconnect ECT sensor multi-plug.
Relieve residual pressure in cooling system.
Remove ECT sensor from engine.
Immerse ECT sensor probe in coolant of specified temperature.
Check resistance between ECT sensor terminals.
ECT sensor may be checked in situ if engine temperature and resistance readings are compared.

________________________________________

Red Rallye - Rolling "restoration"

Wishbone Polybushes available
Posted 20th Jan 2013 at 12:41
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