Stepper Motor

[cornish pasty]

Hi Guys car failed MOT on emmisions!!! have already replaced air flow meter, was cleaning stepper motor and snaped the tt plastic thread off. Anyone know where best place to get new one seen on net for £100.00 plus tt hell. How come this prog blanks out tt but has no spell check. P.S have looked on ebay one for £10.00 and another for £20.00. Both from London area.Only slight use,or bought for spare, even still got box. Humm not some Dodgy Mechanic selling old parts just taken off someones car????????

[peteA]

try http://www.racetechdirect.co.uk/

As you say they are about £90 ish.

Doubt this would be the cause of an emissions failure though...? All the stepper motor does is control the idle speed, as far as I am aware, it has nothing to do with the fuel/air mixture...?

If you have changed the air mass meter then fair enough but assume from this thread that this hasnt worked..?

Other candidates could be the lambda seneors - they are also about £100 and there are two, one in each exhaust header. Whats the year/mileage of the car? Is it burning oil, etc,etc

May be better to get someone to check the car over and see if there are any fault codes?

good luck

[GreenV8S]

cornish pasty said:

Hi Guys car failed MOT on emmisions!!! have already replaced air flow meter

Why? They're blinking expensive things and don't often seem to go wrong. What emissions values did you get and which standard were they testing you against? That would tell you whether it's just a matter of clean plugs and a new filter, or something more drastic needed. Does it drive OK?

[piston-broke]

Even a hole in the exhaust can knock emissions out, as I found on my last car, the flow of exhaust gas can apparently pull excessive air into the system through the hole and mess up the mixture. I suppose if its leaking before the Hego sensor, this is entirely plausible.

Let us know what the readings were and we'll go from there.

[cornish pasty]

Hi Guys , car done 180,000 ish miles. but dont burn oil,and still good oil pressure. have stripped car appart again today. have replaced HT leads, distributor cap,spark plugs rotor arm,air flow meter, engine temp sensor, and stepper motor. Have noticed that the spark plugs on the drivers side have excessive soot deposit,yet car has only been driven approx 20 miles and used a quater of a tank.I am now thinking that it is possibly the drivers side Lamba sensor!. surely they are the only engine management sensors that control either one or the other side of the engine?( polease tell me if I have got this wrong) Have managed to track some down approx £85.00 each will pick these up tommorow and try that. Taking car to get fault codes read is not really an option, have rung Lucas in St Austel and they dont have fault code reader????Have left MOT faliure docs in car will put readings on site tommorow if Lamba's dont work

[S7Paul]

I bought a Stepper Motor about 3 months ago from Paddock Motors. Total cost inc. VAT & delivery was £72.86. You could also try Famous Four, who are also pretty competitive.

Edited by S7Paul on Tuesday 9th September 20:27

[dickbastardly]

hi
Just a warning, i followed the advive for stepper motors from here
http://www.chimaerapages.com/resources_partslist.p...
and the Landrover part no ERR5199 didnt fit! i managed to get it to fit but the wiring was all wrong!
Regards
Andy

[MADMAX2]

Theres one on fleabay for sale off a chim

[V8 Animal]

dickbdly said:

hi
Just a warning, i followed the advive for stepper motors from here
http://www.chimaerapages.com/resources_partslist.p...
and the Landrover part no ERR5199 didnt fit! i managed to get it to fit but the wiring was all wrong!
Regards
Andy

Funny but i bought the stepper from a LR indie with that code and it's perfect.
V8 Animal

[peteA]

180,000 ish miles.....good effort!

[cornish pasty]

Have Fitted new Lamba sensors today,fitted cable ties as was on old ones (How many cables ties are there on a TVR) And took car for quick spin. Roads bit wet spinning wheels in second (with same old getting tired now, clutch,origional clutch 180,000 miles )
When coming home noticed couldnt turn left?now what ) Drove back home right turns only, took a while. Get under car yet again brand new Lambe sensor plug caught in between universal steering joint and chassis thand God no damage done, just glad didnt do left hand doughnut on test drive. Anyway good news car now working well, booking in for 4th MOT in about six weeks

[V8 Animal]

original clutch 180,000 miles
You're kidding right

[piston-broke]

haha, so the clutch lasted longer than your outriggers did. Brilliant.