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Car Forum / Alfa Romeo Cars / December 2005156 cold start splutters
My 1998 156 1.8 ts takes a while to run smoothly on starting. I have to feather the throttle for a few minutes and even then the power surges until it warms up. Anyone had a similar experience? > My 1998 156 1.8 ts takes a while to run smoothly on starting. I have to > feather the throttle for a few minutes and even then the power surges > until it warms up. Anyone had a similar experience? No, but it sounds like your cold start enrichment system is fubar. Either lambda or temp sensor would be first port.  SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk I think that fist thing to look is MAF and then variator.... more info on www.alfa156.net/forum McG >> My 1998 156 1.8 ts takes a while to run smoothly on starting. I have to >> feather the throttle for a few minutes and even then the power surges >> until it warms up. Anyone had a similar experience? > > No, but it sounds like your cold start enrichment system is fubar. Either > lambda or temp sensor would be first port. >I think that fist thing to look is MAF and then variator.... more info on >www.alfa156.net/forum As this link doesn't work (for me) try http://forum.alfa156.net/forum/ SignatureZ Scotland Alfa Romeo 156 2.4JTD Veloce Leather 'Oil' be seeing you.. (Email without 'Alfa' in subject are auto-deleted..sorry!) > I think that fist thing to look is MAF and then variator.... more info on > www.alfa156.net/forum Well, IME the variator won't make the engine splutter, though it will make it rattle. If teh MAF was faulty I'd expect it to cause problems at all temperatures and at most rev ranges. YMMV of course. > McG > [quoted text clipped - 10 lines] >> Triumph Speed Triple: Black with extra black bits >> www.cuore-sportivo.co.uk SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk "" wrote: > My 1998 156 1.8 ts takes a while to run smoothly on starting. > I have to > feather the throttle for a few minutes and even then the power > surges until > it warms up. Anyone had a similar experience? Yep. My 2001 Selespeed has always been tempermental in the cold, not too dissimilar to your experiences. I had it looked at by a specialist Alfa garage in its first winter and they said there was there was nothing wrong with it (’It’s an Alfa’ was their summary!). Since then I’ve got used to it’s foibles and adjusted my driving to suit. Not ideal I know, but I love this car and am willing to live with it. > "" wrote: > > My 1998 156 1.8 ts takes a while to run smoothly on starting. [quoted text clipped - 9 lines] > I've got used to it's foibles and adjusted my driving to suit. Not > ideal I know, but I love this car and am willing to live with it. You've been fobbed off - mine's super smooth when cold ('99 2.0 TS). There's an almost imperceptible transition after about half a mile when (presumably) the engine goes from cold start to normal running mode. Mark >> "" wrote: >> > My 1998 156 1.8 ts takes a while to run smoothly on starting. [quoted text clipped - 13 lines] > There's an almost imperceptible transition after about half a mile when > (presumably) the engine goes from cold start to normal running mode. Ditto SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk I have had the same problem with my 2001 2.0 JTS and I didn't know what to do till a friend of mine told me that I should push the throttle paddle till to the full down position before I turning the ignition key, this procedure activates the automatic chock. From that day my problems terminated and I can once again enjoy my 156. Tal > >> "" wrote: > >> > My 1998 156 1.8 ts takes a while to run smoothly on starting. [quoted text clipped - 21 lines] > Triumph Speed Triple: Black with extra black bits > www.cuore-sportivo.co.uk > I have had the same problem with my 2001 2.0 JTS and I didn't know what > to do till a friend of mine told me that I should push the throttle > paddle till to the full down position before I turning the ignition > key, this procedure activates the automatic chock. From that day my > problems terminated and I can once again enjoy my 156. You know, I could be wrong, but that sounds like a *really* bad thing. Pretty sure it's not what the manual says either. ISTBC of course. C > Tal >> [quoted text clipped - 23 lines] >> Triumph Speed Triple: Black with extra black bits >> www.cuore-sportivo.co.uk SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk > > I have had the same problem with my 2001 2.0 JTS and I didn't know what > > to do till a friend of mine told me that I should push the throttle [quoted text clipped - 4 lines] > You know, I could be wrong, but that sounds like a *really* bad thing. > Pretty sure it's not what the manual says either. ISTBC of course. I doubt it'll do anything - harm or good. The 156 has a fly-by-wire throttle and of course has no automatic choke - those things went out with carburettors! So depressing the pedal with the ignition off will do precisely that, and no more. Maybe it's a good foot exercise :-) If there is anything at all behind this it'll be down to a slightly faulty throttle potentiometer that benefits from a daily full travel "sweep". If the problems recur when you don't do this try replacing the throttle potentiometer. Mark Mark >> > I have had the same problem with my 2001 2.0 JTS and I didn't know what >> > to do till a friend of mine told me that I should push the throttle [quoted text clipped - 9 lines] > carburettors! So depressing the pedal with the ignition off will do > precisely that, and no more. Maybe it's a good foot exercise :-) Yes, of course. I was trying to think why this would be bad. Just knee jerk reaction on my part. > If there is anything at all behind this it'll be down to a slightly faulty > throttle potentiometer that benefits from a daily full travel "sweep". If > the problems recur when you don't do this try replacing the throttle > potentiometer. Sounds plausible. SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk >I doubt it'll do anything - harm or good. The 156 has a fly-by-wire throttle You sure? IIRC, only the 2 litre had the electronic accelerator pedal (thus allowing the optional Selespeed box to control the throttle during shifting). IIRC, the smaller engines used a more conventional direct link between the throttle valve and the accelerator pedal. It's a fine point in this case as all cars have been 'fuelled by wire' for years but IIRC, Alfa made a thing of the 2 litre's electronically linked accelerator pedal when it came out. I don't even think the 2.5 had an electronic accelerator, again, IIRC. <snip> >If there is anything at all behind this it'll be down to a slightly faulty >throttle potentiometer that benefits from a daily full travel "sweep". If >the problems recur when you don't do this try replacing the throttle >potentiometer. If the 1.8 doesn't have an electronic throttle then it won't have this particular potentiometer. SignatureZ Scotland Alfa Romeo 156 2.4JTD Veloce Leather 'Oil' be seeing you.. (Email without 'Alfa' in subject are auto-deleted..sorry!) >You sure? IIRC, only the 2 litre had the electronic accelerator pedal >(thus allowing the optional Selespeed box to control the throttle [quoted text clipped - 4 lines] >linked accelerator pedal when it came out. I don't even think the 2.5 >had an electronic accelerator, again, IIRC. That is what I thought too. Pete Signature<iowna156@rustclubalfa.com> 156 2.0 TS (2001) - Proteo Rosso > >You sure? IIRC, only the 2 litre had the electronic accelerator pedal > >(thus allowing the optional Selespeed box to control the throttle [quoted text clipped - 6 lines] > > That is what I thought too. Hmm - my main point was that the chap with the 156 2.0JTS wasn't activating his non-existent automatic choke... Not 100% sure that all 156s have drive-by-wire throttles. A bit of Googling suggests that the 2.0TS & JTS and 2.5V6 have it, but I've found nothing conclusive/exhaustive. Looks like all 147s & 166s have it as it's used as part of the cruise control system. On that basis the GTA has it too. ISTBC. Mark On Fri, 16 Dec 2005 19:36:23 GMT, Zathras <webnewsgroup@nospamthanks.hotmail.com> selected combat throttle and flew into a dogfight with: >If the 1.8 doesn't have an electronic throttle then it won't have this >particular potentiometer. Engines that use an engine mangement system require a throttle potentiometer to detect the throttle position. So that'll be most modern petrol engine cars then (and even some diesels). This will include the 155, for example. All 156s have a drive-by-wire throttle from 2002/06, not just the Selespeed. ISTBC. -- Max Reheat (:o) - deselect Part Throttle Reheat to reply. Alfa 156 2.0 JTS Selespeed Veloce Lancia Dedra 1.8i.e.SE Max Reheat wrote: > On Fri, 16 Dec 2005 19:36:23 GMT, Zathras > <webnewsgroup@nospamthanks.hotmail.com> selected combat throttle and [quoted text clipped - 5 lines] > Engines that use an engine mangement system require a throttle > potentiometer to detect the throttle position. Not true at all. Perfectly reasonable to detect the position of the throttle butterfly, or just measure the amount of air entering the engine. cf. V6 12 valve if memory serves. > So that'll be most > modern petrol engine cars then (and even some diesels). Same logic applies. > This will > include the 155, for example. Moderatley sure that that didn't have fly by wire > All 156s have a drive-by-wire throttle from 2002/06, not just the > Selespeed. > > ISTBC. I'm not going there, don't know enough about 156 SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk You can do what ever you want but I can tell you that from my experience with my 156 the problem never ever came back so you can go on with you theories. What I would like to know if Catman tried what I did and it helped him or not > You can do what ever you want but I can tell you that from my > experience with my 156 the problem never ever came back so you can go > on with you theories. What I would like to know if Catman tried what I > did and it helped him or not I never had the problem, so it's not really an issue SignatureCatman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3 OMF#22 Tyger, Tyger Burning Bright (Remove rust to reply) Alfa 116 Giulietta 3.0l (Really) Sprint 1.7 156 TS S2 Triumph Speed Triple: Black with extra black bits www.cuore-sportivo.co.uk |
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