Technical My stilo

[Deckchair5]

Don't thrash it. Just reset the ecu afterwards (or clear fault codes which will do the same thing)and then just drive normally -whatever that is -taking it up and down through the rev range and a bit of time on tickover as it needs to learn what normal is

Don't expect miracles to start with and it may make a mistake or two at idle whilst it's learning but hopefully it's now getting the data it needs in order for it to have a dog's chance of a tickover

You said in your post that the plugs "Are good and new" so I would guess they won't have aged much since 3 weeks ago

But yes - bad plugs -if they are- aren't good

 

[stilosporting]

i think he is referring to the gap set on the plugs.

 

[Seraph]

i think he is referring to the gap set on the plugs.

yea, exactly that.
i set the gap at the same as the plugs i took out.

 

[Deckchair5]

Even single pole plugs will take 10,000 miles before needing a gap readjustment

Best gap for single pole spark plugs I've found is 0.9mm on the 1.6

 

[Seraph]

Yes.
Even single pole plugs will take 10,000 miles before needing a gap readjustment

wait, that means it should be ok? or not? the plugs that came out I think had only been in while i was experiencing the problems with it... so it could be they were gapped incorrectly...therefore. could too large/too small a gap cause these sorts of problems?

 

[stilosporting]

i thought they would cause more missfire issues than anything?

 

[Rich]

Plugs come pre-gapped these days.

I recommend Bosch Super 4's - £12 on ebay, £20 at halfords (£12 with a trade account), fantastic plugs and pre-gapped.

 

[Deckchair5]

" i set the gap at the same as the plugs i took out".

Well setting them to the same as the maybe clapped plugs you take out is an odd thing to do but check them for 0.9mm gap and you'll know then they're gapped ok

 

[Deckchair5]

"Plugs come pregapped these days"
I thought so too Rich but they don't
My first set of new single point plugs were set at 0.8mm instead of 0.9mm. Made a surprisingly huge difference too for 0.1mm. I wondered what the heck was going on, new plugs and the car runs worse? Gap corrected then just fine

They're set for the plug and not for the car. Should always be checked as they may have been knocked

Multi point plugs you can't and shouldn't do anything much with the gaps

 

[Seraph]

oh, i forgot to mention, that gendan software still says that my o2 sensor heater circuit is boned... well it still brings the code up when I press "refresh" but when I clear it disappears completely.

 

[Deckchair5]

Well, as i mentioned before, i think your NO.2 O2 sensor heater is gone too but that's not so vital as the NO.1 O2 sensor. You can check it with a multi meter to be sure but make sure you don't do a resistance check on the O2 sensor wires itself

Is it saying Bank 1 O2 sensor heater or Bank 2?

Have you allowed 3 clear starts?

How is the tickover now?

You could send your psv files if you'd like me to have a look through. Send to this email [email protected]

 

[Rich]

Try downloading Scantool - this always worked fine on our 1.6. However, from what I recall, it won't reset the codes with the engine running, only on ignition.

Did you try disconnecting the coolant sensor? Not only will it eliminate that component, but it will throw the Stilo into safe mode, and it may be worth seeing how it does then. Won't cost you anything afterall.

 

[Seraph]

Tickover is still rubbish. it's still stalling occasionally.

it's bank 1 heater circuit that's the one, and it might just be cos i have to have the engine off to wipe the code.

Rich: i have no idea how to do that...

 

[Deckchair5]

I think Rich is assuming you're having trouble clearing your fault code but Gendan software that you have will clear your fault codes as you know but you need the ignition on but engine not running.

Do a longer test drive scan with some one minute tickover points and send me your file by email and i can have a look at it over the weekend

Usual stuff O2 No 1 and O2 No.2 on top and rpm and car speed on bottom would be useful

You have got good plugs now set at the correct gap yes?

 

[Seraph]

I've not re-gapped the plugs yet.

i'm off to Budapest tomorrow, so I wont be in a position to post anything. i'll have a week away and get back to you then.

thanks for your help in this by the way... if we can sort it..i'd be chuffed...

 

[Deckchair5]

Have a great flight!
See if they have any cheap Stilo throttle bodies going over there

 

[Seraph]

right then guys n girls.

been back a bit, not had much time to do anything, however, tonight, my car was going up a gentle incline at 70 in 5th and engine fault.

the following codes being reported p0201 p0203 p0204
this says the injector circuits for cylinder 1 3 and 4 respectively.

wtf??

 

[Deckchair5]

Ha! Do you park your car near a river while you're away?
I would check out and use contact cleaner on the D81 injector multi connector as it's likely a poor contact there
How to check your injector circuits is all explained in the Stilo guides
https://www.fiatforum.com/stilo-guides/112113-checking-injectors-electrical-circuits.html

 

[Seraph]

ok, so continuity on the injectors is fine.

THe connector has just been reaffixed. I still haven't checked the gap on my plugs.
but I think now is the time to get some proffessional help with this car.
There's a fiat specialist/enthusiasts garage near me, so I'm gonna drop it off there and see what they can find.

 

[stilosporting]

what garage is that? could give them mine to look at if theyre not too expensive.