Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
Got an Ax.
1.0 tu engine 8v
Symptoms.
Will rev absolutely fine when stood, and happily bounce off the limiter
When driving and obviously under load, will cough and sputter after about 3000rpm and then when revs drop back down it almost cuts out.
Any ideas
Posts: 20,092
Threads: 591
Joined: Nov 2012
Reputation:
54
Location: Cotswolds
Car Model/Spec: Stage 13 16v HDi
Thanks: 22
Given 68 thank(s) in 68 post(s)
may be coil related.
wont show up if not under load.
or fuel...again, may rev happily without load...dont take much fuel to rev an engine to the limter when stationary
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
I've given carb a clean out, changed the fuel filter.
Only thing I can think is I've fitted a straight through exhaust and just cut all the wires going to the lambda in the old exhaust.
Could that cause it?
Posts: 20,092
Threads: 591
Joined: Nov 2012
Reputation:
54
Location: Cotswolds
Car Model/Spec: Stage 13 16v HDi
Thanks: 22
Given 68 thank(s) in 68 post(s)
so you have no lambda sensor working???....that would do it if thats the case!
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
I'm a noob with petrols, first I've had for a while.
There's no hole for lambda in new exhaust, if I just wire sensor back up and leave it tied somewhere will it still work?
Posts: 7,825
Threads: 465
Joined: Dec 2011
Reputation:
114
Location: Cullompton Devon
Car Model/Spec: Vauxhall
Thanks: 1
Given 98 thank(s) in 92 post(s)
no it measures the exhust gas and adjust the mixture
it needs to be in the exhust not the glovebox
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
Better stick it back in then!
Posts: 4,604
Threads: 90
Joined: Dec 2011
Reputation:
54
Location: Cornwall
Car Model/Spec: 1996 306 DT M-TDI/16
Thanks: 0
Given 20 thank(s) in 18 post(s)
Haha Sam epic fail!!!
| Dyno Power Runs & Steady State Facilities Available, Just Ask Anytime |
| #DervMafia |
![[Image: sigi-2.png]](http://i281.photobucket.com/albums/kk226/darrenjlobb/sigi-2.png)
Posts: 1,497
Threads: 177
Joined: Dec 2011
Reputation:
3
Location: Highlands, Scotland
Thanks: 0
Given 0 thank(s) in 0 post(s)
Its got a carb and lambda? Sure its not single point injection?
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
No it's injection.
At least my hydraulic handbrake is working well!
Posts: 20,092
Threads: 591
Joined: Nov 2012
Reputation:
54
Location: Cotswolds
Car Model/Spec: Stage 13 16v HDi
Thanks: 22
Given 68 thank(s) in 68 post(s)
SPI.
needs the lambda.
cut the little bit out of old exhaust with the lambda nut in it and cut a gap in new exhaust and weld the nut in. 
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
04-10-2013, 08:19 PM
(This post was last modified: 04-10-2013, 08:32 PM by Sambarker.)
(04-10-2013, 08:07 PM)Piggy Wrote: SPI.
needs the lambda.
cut the little bit out of old exhaust with the lambda nut in it and cut a gap in new exhaust and weld the nut in.
Not a bad idea
My dads just suggested making the wires really long and clamp the sensor inside the back box. Would this work?
It's a straight through exhaust to a cherry bomb
Posts: 1,497
Threads: 177
Joined: Dec 2011
Reputation:
3
Location: Highlands, Scotland
Thanks: 0
Given 0 thank(s) in 0 post(s)
It really needs to be in the down pipe
Posts: 20,092
Threads: 591
Joined: Nov 2012
Reputation:
54
Location: Cotswolds
Car Model/Spec: Stage 13 16v HDi
Thanks: 22
Given 68 thank(s) in 68 post(s)
wont work in back box.
needs to be in collector or just after.
Posts: 4,604
Threads: 90
Joined: Dec 2011
Reputation:
54
Location: Cornwall
Car Model/Spec: 1996 306 DT M-TDI/16
Thanks: 0
Given 20 thank(s) in 18 post(s)
Put it where its meant to be sam, it will have a pretty drastic effect on the fueling!
Lol at the hydro e-brake 
| Dyno Power Runs & Steady State Facilities Available, Just Ask Anytime |
| #DervMafia |
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
Lambda back in place now (the correct place)
Still seems to be limiting itself to 4000rpm
Sat waiting for ecu to hopefully reset
Now and again it will be fine and rev to 7000
But then you let off throttle and it will be limited at 4000
Tried another coil pack, it's got brand new spark plugs, just had service, temp sensor just changed.
Starting to really f*ck me off now
Posts: 648
Threads: 46
Joined: Jul 2013
Reputation:
6
Location: Bridlington
Car Model/Spec: Renault Scenic 2.0
Thanks: 0
Given 6 thank(s) in 6 post(s)
unplug the battery and wait overnight, if that doesn't work then get yourself a tu5jp4 imo
Project: Formula Peugeot
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
Yeah I've left it unplugged
That's the long term plan
Posts: 648
Threads: 46
Joined: Jul 2013
Reputation:
6
Location: Bridlington
Car Model/Spec: Renault Scenic 2.0
Thanks: 0
Given 6 thank(s) in 6 post(s)
you on the AXOC at all?
Project: Formula Peugeot
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
(05-10-2013, 06:36 PM)John1.4 Wrote: you on the AXOC at all?
Don't post on it much been on about 6 years
Posts: 648
Threads: 46
Joined: Jul 2013
Reputation:
6
Location: Bridlington
Car Model/Spec: Renault Scenic 2.0
Thanks: 0
Given 6 thank(s) in 6 post(s)
lol i've not been on for a while, still lurk in and out now and then though
Project: Formula Peugeot
Posts: 4,883
Threads: 198
Joined: Jan 2012
Reputation:
135
Location: Not near you
Thanks: 0
Given 0 thank(s) in 0 post(s)
7krpm? On a 1.0 TU?
Just fyi.. with no lambda connected it won't give you rev issues, it'll just overfuel like f*ck as the ECU defaults to a rich mixture to prevent detonation. Not sure what sensors are on a TU but with regards to XU's this can be caused mostly by lambda, TPS and coolant temp sensor.
My GTi was awesome when the TPS died, sounded like antilag with the Magnex fitted, a proper rapppappappappappaPOPpapapoPOPrapapapPOP POPrapraprapapap when doing like 30mph 
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
(05-10-2013, 09:35 PM)cwspellowe Wrote: 7krpm? On a 1.0 TU?
According to my mahoosive fake Autogauge tacho
Posts: 648
Threads: 46
Joined: Jul 2013
Reputation:
6
Location: Bridlington
Car Model/Spec: Renault Scenic 2.0
Thanks: 0
Given 6 thank(s) in 6 post(s)
regularly had 7k on all my 954cc ax's think they went up to 7250 (same as mk1 vtr rev limit iirc)
the tu9 engines are properly basic - water temp for ecu, lambda, crank and tps, then water temp warning light and an oil pressure warning light, 954cc ax's didn't even have a rev counter
Project: Formula Peugeot
Posts: 1,430
Threads: 132
Joined: Jan 2012
Reputation:
4
Location: Yorkshire
Car Model/Spec: 305 and 306 HDi's
Thanks: 1
Given 6 thank(s) in 6 post(s)
Been alright today after resetting ecu. However most of the exhaust fell off halfway through a stage and engine has developed a chronic wine.
Time to find a 1600 engine
Posts: 1,766
Threads: 252
Joined: Dec 2011
Reputation:
7
Location: Sheffield/Leeds
Car Model/Spec: Xud sedan/Xud estate
Thanks: 2
Given 2 thank(s) in 2 post(s)
Hope you didn't lose your cherry!
TD04 11mm Sedan, now 2.1 vnt
Sedan Project http://306oc.co.uk/forum/thread-5763.html
Provence Dturbo Dead
Blaze 1.6 Dead
China 5dr '6 Death by cambelt failure
Matt White HDI estate Death by wiring
Sedan Dturbo aka triggers broom
Diablo estate Dturbo Living dead
Posts: 7,347
Threads: 163
Joined: Dec 2011
Reputation:
53
Location: Leeds
Car Model/Spec: 406 HDI
Thanks: 0
Given 18 thank(s) in 15 post(s)
To be honest mate, TU engines are quite sensitive to back pressure. Did it do it with the original exhaust?
Posts: 1,766
Threads: 252
Joined: Dec 2011
Reputation:
7
Location: Sheffield/Leeds
Car Model/Spec: Xud sedan/Xud estate
Thanks: 2
Given 2 thank(s) in 2 post(s)
Don't think he drove it much with standard exhaust
TD04 11mm Sedan, now 2.1 vnt
Sedan Project http://306oc.co.uk/forum/thread-5763.html
Provence Dturbo Dead
Blaze 1.6 Dead
China 5dr '6 Death by cambelt failure
Matt White HDI estate Death by wiring
Sedan Dturbo aka triggers broom
Diablo estate Dturbo Living dead
Posts: 1,950
Threads: 55
Joined: Dec 2011
Reputation:
17
Location: Rotherham
Car Model/Spec: 406 V6
Thanks: 3
Given 10 thank(s) in 10 post(s)
Single point does quite a shitload of it's fine tuning from the lamda and the TPS, disconnecting it is a bit of a fail 
Custom roll cages/shiny suspension bits/general fabrication work undertaken, PM me.
Top engine mount repair/reinforcement/chocking for cracked chassis and high powered cars, drive in, drive out, 2 hour turnaround.
Posts: 8,749
Threads: 208
Joined: Jan 2012
Reputation:
60
Location: Wiltshire
Car Model/Spec: ph2 Gti6 / ph4 HDI Estate
Thanks: 1
Given 5 thank(s) in 5 post(s)
Facepalm
![[Image: DSC_0190-Copy_zpsf093f84d.jpg]](http://i1038.photobucket.com/albums/a468/167gti8/DSC_0190-Copy_zpsf093f84d.jpg)
Member of 99% warning or your nothing club!
|
![[Image: signature_zps1a02ba79.jpg]](http://s1128.photobucket.com/user/martypellowe/media/signature_zps1a02ba79.jpg.html)
![[Image: tapatalk_1427020983519_zpsnwvozlhb.jpeg]](http://s768.photobucket.com/user/annegg5511/media/Mobile%20Uploads/tapatalk_1427020983519_zpsnwvozlhb.jpeg.html)
![[Image: DSC_0190-Copy_zpsf093f84d.jpg]](http://s1038.photobucket.com/user/167gti8/media/DSC_0190-Copy_zpsf093f84d.jpg.html)