BigErn

Right....I have been told to check the voltage on my TPS at pin 11 and 17 on the ECU with ignition on and it should read 0.2v.
I have done that and its reading 4.8v when closed and 0.7 when fully open.

Baiscially.......Is it fooked? What should it read when at full throttle? Does voltage increase/decrease as throttle is opened?

If it is fooked, then where can i get one asap?

Thanks peoples!

Rick

those voltages are within tolerance - i assume it's a 2wd car?

BigErn

It is mate, so does that mean its ok then?

Rick

It means the voltages are what they should be. But, without a scope, you can't say it's for certain, as there maybe a problem with transitions.

BigErn

Ok that makes no sense to me

Rather than tryin to explain what it means can you give me some advice as to what to do then please?

abdr500

iTrader: (1)

BigErn
i have a one its only 3 month old from new if you want to buy one

BigErn

You have PM mate

Rick

BigErn

That depends what your trying to do. It's very unlikely that your TPS is at fault. What's the problem?

DazC

iTrader: (1)

If it's a 2wd car, that sound about right (as long as it's running a PF01 TPS and an L1 or L6 ECU).

BigErn

This is whats goin on mate, its doin me fookin head in. I need the car back on the road cos its used daily.

If you or any one can help Ill be your bestest buddy in the whole wide world. lol

BigErn

It running PF01 with L6.

BigErn

Forgot to include link. My bad!
https://passionford.com/forum/viewtopic.php?t=240182

svony

iTrader: (3)

Not to thread jack but while we're on this topic... what should the reading be on a 4x4? Repair manual says 0.6 but a search on here says 0.25-0.30 at idle

Wardy257

The important thing is the resistance reading throughout the range of the TPS. The resistance should change in a nice linear maner as the throttle is opened. Any blips, non-linear readings are faults and will upset the ECU.

coswurv

iTrader: (8)

Remember bigern i have a spare throttle body with tps already fitted and i know it works fine all you need to fit to it is the iscv and i still have that standard chip and injectors etc if you wanted to go back to basics and fault find from there, as it could be your chip or map sensor playing up and all this set up works perfectly still cheeRS.

BigErn

So by the sound of this then my TPS is fine. Il put it back together and see if it will run now.

Rick

I'm no expert in the faults that marelli suffers from commonly. By all means try another TPS, as it could have problems that show only when the throttle is changing. Is your CPS aligned ok? Tried another MAP sensor?

BigErn

Whats the CPS then? Im guessing Crankshaft Position Sensor? I havent moved it or touched it so Im guessing its ok. Havent been able to get hold of a MAP sensor. Id have liked to know what was wrong before I start spending on sensors etc just as trial and error.

Rick

unfortuneltly, this is the usual way of doing things. If u have a mate close, then u can swap stuff. CPS is crank position sesnor, they do fail/get much in em etc.

BigErn

Dont know anyone willing to let me rob bits off theirs so it looks like it will be trial and error.

coswurv

iTrader: (8)

BigErn i can post the bits up to you so you can put it back to standard and try them but i do want them all back i also have a spare old but working order blue water sensor the brown act sensor and a cps and the throttle body so its up to you its all there and will elliminate everything cheeRS paul.

BigErn

I got a brand new coolant temp sensor and crank sensor for it, Ill probably fit them tomorrow while all the leeches are at our house. Cheers Paul, Ill keep you informed.

Rick

be sure to check the condition of the plug/wire to the CPS, as they critical.

BigErn

Thanks guys, I have ruled out the TPS switch now. See thread "Update".