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Discussion Starter · #1 ·
I picked up a '00 model 156 2.0TS selespeed last wednesday and knew it was coming with gearbox gremlins. Runs fine except it beeps at me when i get into second and wont let me go into third for a bit ( It normally stops when i back off the accelerator). Could this be the selection sensor? it's also very juddery when driven cold for the first 200 metres and im not sure because it is the only selespeed i have driven but the gear changes seem to me to be a tad long, not nearly as sharp as i would imagine they should be.
I have been perusing the posts and it seems like smaky is the god of selespeeds but alas he is halfway around the world!
Any help would be MUCH appreciated.
 

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this is an Alfadiag job ! Check the log and see whats wrong
 

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Discussion Starter · #6 ·
I havent had time to get alfadiag up and running yet.... finding a cable to connect is seeming hard unless i wanna import one from portugal which is expensivo and a long time. You mention the crank sensor Smaky, do you think that that could be causing all the symptoms? im hoping that its all DIY stuff or else im gonna have to do some serious overtime for a while!
 

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I have the cable you need PM me for details
 

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Discussion Starter · #8 ·
Ok an update on the situation. I have a cable coming from Rarebear but the volcano means i wont see it for at least a week!
I had a new symptom where it skipped 4th whilst cold and driving mildly and went to 5th, i shifted down to get 4th and it went to neutral :/
I was reading a thread today that Iainfm was involved in where this happened and was caused by a broken casing but i dont know why that would have happened in this case. any ideas?
I also think the thermostat might be sticking as sometimes it doesnt seem to even register a temperature but sometimes it sits at 90, could this be the cause of anything?
Hopefully i'll be able to sort this out when i get the cable but any advice on what to look for would be great!
also is there a thread on using FiatECUscan/AlfaDiag as im new to 'modern' car techniques. :p
 

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I also think the thermostat might be sticking as sometimes it doesnt seem to even register a temperature but sometimes it sits at 90, could this be the cause of anything?
You'll find the thermostat will be stuck wide-open - that's how they fail. The cooling system is sufficient to over-cool the engine, so the gauge hardly registers during normal driving. Replace the thermostat before winter gets here, so you have decent heating and smooth running. It won't be the cheapest thermostat you've ever bought... and forget SuperCheap or Repco, you'll probably need an Alfa parts specialist.

This is unlikely to have much effect on your Selespeed operation except to make the engine idle a bit faster for a longer period of time, which doesn't help the moving off smoothly in first/reverse since your clutch pushrod probably needs adjustment. Unfortunately the skipping gears is not a good sign and there may be mechanical gearbox work ahead of you. :( But at least Alfadiag will help to show what is going on with regard to system pressure and gear selector position sensors. Have a look at Smaky's guide to adjusting the clutch pushrod at http://www.alfaowner.com/Forum/alfa...rod-adjustment-with-alfadiag.html#post2447708 to get a feel for how Alfadiag works. Note that Alfadiag provides a numerical readout of the sensor position, as well as the graph.

-Alex
 

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Hello there...

don't get yourself scared!

After you've got your diagnostics you may want to check this

Alfa Romeo Selespeed - car goes to idle on its own

and/or this

Alfa Romeo Selespeed - gears are not engaged

I'm new to my selespeed (own it only for half a year), but read as much information as is available and in the forums here (Germany) problems with the gearbox itself are rare (not more then on "normal" Alfas). So, from my point of view, broken gearbox or anything as expensive as that, is possible but unlikely...

Wish you luck :)
Findus
 

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Discussion Starter · #11 ·
tested the thermostat by feeling the top radiator hose, it got quite hot and the gauge was at 55, might have to source a new one. I'll try Bursons. Im hoping the cable arrives soon, im looking forward to toying with it! seems like its gonna be more fun than my PS3 :lol:
I noticed when i turn off the engine the gear display goes from 1 to 3 to 5 then back to 3, is that telling me something? (it might not be in that order all the time but i am wondering if thats normal)
 

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Discussion Starter · #12 ·
The cable arrived today, i looked high and low and everywhere and cant find where to plug it in! 2000 model 156 selespeed have the OBDII cable connection dont they? please? TELL ME THEY DO! It also went into neutral several times when downshifting, i was stuck at a roundabout for 2 minutes trying gears. i got reverse eventually and then it was able to get into 1st. I have a theory that my battery might be dying because when i get it to rev harder it seems to not play up AT ALL, so i figure im charging it enough to make it work the pump with enough power? just the ramblings of a delirious crazy man after a few close calls with corners and no gears :eek:
An answer on the cable would be appreciated pronto
 

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Discussion Starter · #13 ·
ok found it, FiatECUscan kept telling me i had the wrong ISO codes whatever that means, im off to work now so i'll tinker around some more tomorrow time permitting. I got confused with the whole 'passenger' footwell when here its the drivers. oh well, never mind. also as a note to people with dodgy thermostats i got quoted $210 for one from repco, is that reasonable? i'll wait and se what alfadiag says first before i go and splash all my cash away. might have to wait to sell my Pajero before i attempt the gearbox unless its all sensors. tally ho
 

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Discussion Starter · #14 ·
Ok, i have done some diagnostics, the error code i get is P1742-Selection Sensor.
My clutch plate is at 12.6mm
My battery is seeming to be fine (14.6V when charging)
With the clutch why would it be so low? Is it the sign of a work clutch?
anyway i guess i better browse for some selection sensor info.
 

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12.6 is definitively wrong.. if you mean the clutch pin, should be 38 39
adjust it accordingly and do an EOL routine
 

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Discussion Starter · #17 ·
Be careful if using the latest version of AlfaDiag. It *may* report the clutch rod length incorrectly. Get a 2nd opinion with FiatECUscan.

Correct length should be 28.0-28.5mm ;)

I was using FiatECUscan, the alfadiag demo didnt work so i downloaded it after i had run the diagnostics and put the car back together.
It said Clutch plate, is that the parameter i need? I'll open it up again when i have some time off, which after exposing the boss' affair might be alot :/
i saved a graph as a .csv but i dont know how to open it as a graph again, it thinks its an excel spreadsheet and i dont know what program to open it with to get a visual read out.
 

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28 28.5 is correct I made a typo sorry:rolleyes:
 

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Discussion Starter · #19 · (Edited)
I took the spanners out today to get the clutch adjustment done..... hooked up alfadiag and got 28.46mm, got the same with FiatECUscan. apparently i was looking at the wrong clutch sensor when i got my first reading. When i tested with the engine on i got a reading in the teens but i assume thats normal?
I had 3 error codes on the selespeed ECU, (i should have written the last 2 down i guess )
P1742 - Selection range sensor. 'Short circuit Vcat'
is there a thread on how to change/diagnose further the selection sensor? and will this be causing my problems?
P072? - Engine speed
and i think.... P1762, something CAN or CAM but in smakys fault code guide thats something to do with overdrive, i'll have to look again.
I have a thermostat arriving 2moro that i shall install time permitting. I'm contemplating handing it to the mechanic but thats gonna sting. Is there anyway i can test the crank sensor with alfadiag? If i do give it to the mechanic i wanna know exactly what needs to be done. *tears hair out* maybe i should have gone with an alfetta :lol:
 

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P1742 is the range sensor at the back of the actuator, aka the worst one to get at!

Thermostat is an easy job ;)

The 'engine speed' readout on AD should test the crank sensor. The usual test for a faulty one is that the car stops running though! Have a look at the output, and check it's making sense (nice and smooth, increases when you press the accelerator etc).
 
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