Emisions Test On A Gti 6

[dodsworth_gti 11]

hey,sorry to bang on about my 306,but once its mot'd its getting sold and shortly after i should be back in the 205 fold

 

any way it failed its emisions in eveery single way possible

 

does anyone have any idea's as to what could be causing this???

 

i thought it was running well to be honest,the only thing is some time when holding it at a steady speed in can get a bit lumpy

 

any help would be great :)

 

many thanks

 

ben

[ljenkins22 0]

could you give the readings off the results page i will be able to help you more with these

kind regards lee

[dodsworth_gti 11]

fast idle

 

co 0.30% 99.9%

hc 200ppm 358 ppm

0.97-1.03 0.718

 

second fast idle

 

co 0.30 9.99%

hc 200ppm 380 ppm

0.97 - 1.03 0.706

 

natural idle test

 

co 0.50% 8.09

 

 

hope this helps

 

thanks

 

ben

[ljenkins22 0]

rich aint the word,cat screaming out with the co readings possibly knackered by the miss you describe, i take it you are running a cat?

[dodsworth_gti 11]

yeah its totally standard apart from a back box and filter

[ljenkins22 0]

yeah would prob sort out the missfire and with the readings from the test think your gonna want a cat, what engine is it i have a new 1.8 16v coil pack here if your interested, priced one in work today and they £85 plus vat, to trade, open to offers, if you need one.

lee

[welshpug 1,627]

lambda is way out there too.

 

start by testing the coolant temp sender, then the lambda.

[dodsworth_gti 11]

how do i test these??

 

2.0 16v gti6

[welshpug 1,627]

multimeter, all the data required is in the FAQ section on the 306gti6 forum

[dodsworth_gti 11]

nice one thanks

[ljenkins22 0]

Engine coolant temperature (ECT) sensor Checking -

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.

 

Oxygen sensor heater Checking supply voltage - Technical Data Terminals Voltage 1 & 2 Battery voltage NOTE: Disconnect injector multi-plugs before cranking tests, to prevent engine from starting. Ensure ignition switched OFF. Disconnect HO2S multi-plug. Briefly crank engine. Check voltage between harness multi-plug terminals Fig. 23 [2]. Checking resistance - Fig. 23 Technical Data Terminals Resistance 1 & 2 20 W max. Ensure ignition switched OFF. Disconnect HO2S multi-plug. Check resistance between HO2S terminals Fig. 23 [3]. Manufacturer: Peugeot Model: 306 (97-03) 2,0 S16/GTi-6 Engine code: XU10J4RS/L3 (RFS) Output: 120 (167) 6500 Tuned for: R-Cat Year: 1997-01 © Autodata Limited 2008 23/11/2011 V7.412-ENGH171755

hope this helps wont allow me to upload the image docs

pm me your email addy if you want me to mail them

kind regards lee

[dodsworth_gti 11]

dodsworth_gti@yahoo.co.uk

 

that would be great thanks

[ljenkins22 0]

sent

[dodsworth_gti 11]

thanks pal,so just to re cap,which sensors should i be looking at checking,and ill probably also need a cat

[dodsworth_gti 11]

hmmm wont open them on my computer grrrrr

[ljenkins22 0]

i would test the ect as welsh pug suggested if you like wasting time! {no offence welsh pug}also test the lambda sensor, if all are within tolerance then cure the misfire and put a cat on, in my opinion the ect sensor test is a waste of time as they are so cheap to buy, ie about £7, and testing is so long winded, just change it it cant do it any harm imo

kind regards lee

[welshpug 1,627]

I wouldn't buy a £7 one, I don't see what's so long winded about throwing a multimeter across the terminals and seeing what the resistance is?

 

Spend 2 minutes doing that and save wasting your £7

[dcc 855]

my GTI 6 engine passed emmissions with flying colours without a cat (even for a cat test) so dont know why your's would be so bad...

 

Make sure you got the cam sensor plugged in, the injectors running at correct fuel pressure?

[ljenkins22 0]

I wouldn't buy a £7 one, I don't see what's so long winded about throwing a multimeter across the terminals and seeing what the resistance is?

 

Spend 2 minutes doing that and save wasting your £7

its not the putting of the multimeter across the terminals thats long winded its getting the correct temp to resistance variation if you look at the testing procedure.

 

10 degrees =3530-4100 Ω

20 degrees= 2350-2670Ω

and so on

[welshpug 1,627]

ECT sensor may be checked in situ if engine temperature and resistance readings are compared.

 

 

 

 

no need to go through the whole process in my experience, they are either spot on or wildly out.

[dodsworth_gti 11]

which sensor is the ect??

 

im doing the rest of the work for the mot tomorrow so while the car is up and getting worked on im going to check all the wiring,as you just never know lol

 

ive heard of a few gti 6 engine passing with no cats,which was making me think that it isnt the cat

 

 

it does go through fuel like there is no tomorrow

[dodsworth_gti 11]

also how do i test a lamba sensor?? cant find that anywhere

[welshpug 1,627]

ect is the green one, lambda is in the downpipe/cat.

[dodsworth_gti 11]

i know where the lamdba is lol,i meant how do you test it

 

ect is it one of the three near the thermostat???

 

is it listed under a different name on the gti6 forum

 

 

 

god damn it i cant wait to get shot and get another 205!!!!

[welshpug 1,627]

read what was posted above.