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#1
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my 156 2.5 cannot go beyond 5000 rpm
Hi,
In the past few months, I read from this ng a thread about this question I have, but I unfortunately lost the answer. Here it is: My 2000 156 2.5 engine cannot go beyond 5000 rpm (or so), no matter how hard I press the gas pedal, or no matter the gear I am in. Although I need this extra boost very seldom, I think this is very ennoying in some cases where I need a bit of extra kick. I assume this is a problem in my own car since I tried the new 156 at the retailer and it happily gave me the boost I needed. Do you have any idea where this relates to and what should I ask my dear dealer to do on my car, before he decides to charge me for his own investigation time? -- Claude |
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#2
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Could be a lot of things.
- How old? - How many km's/miles? - Is the car maintained well (every 20000km's)? - When was your airfilter changed last? - How does the engine start? - Have you ever checked the compression? - Is the engine running on the emergency CPU setting? - etc etc etc. It certainly is not normal! -- Ciao from Holland AlfistaGJ (Gert-Jan) Alfa red 156 SW 1.8 Madeno tuned (2000) Golden Montreal 1428700 (1973/4) "Claude" > schreef in bericht ... > Hi, > > In the past few months, I read from this ng a thread about this > question I have, but I unfortunately lost the answer. Here it is: > > My 2000 156 2.5 engine cannot go beyond 5000 rpm (or so), no matter > how hard I press the gas pedal, or no matter the gear I am in. > Although I need this extra boost very seldom, I think this is very > ennoying in some cases where I need a bit of extra kick. > > I assume this is a problem in my own car since I tried the new 156 at > the retailer and it happily gave me the boost I needed. > > Do you have any idea where this relates to and what should I ask my > dear dealer to do on my car, before he decides to charge me for his > own investigation time? > -- > Claude |
#3
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> Hi,
> >In the past few months, I read from this ng a thread about this >question I have, but I unfortunately lost the answer. Here it is: > >My 2000 156 2.5 engine cannot go beyond 5000 rpm (or so), no matter >how hard I press the gas pedal, or no matter the gear I am in. >Although I need this extra boost very seldom, I think this is very >ennoying in some cases where I need a bit of extra kick. > >I assume this is a problem in my own car since I tried the new 156 at >the retailer and it happily gave me the boost I needed. > >Do you have any idea where this relates to and what should I ask my >dear dealer to do on my car, before he decides to charge me for his >own investigation time? >-- > Claude > How does the engine feel when you try to exceed 5000RPM? If it feels like the rev limiter is cutting in you may well have a faulty air flow meter (MAF). It's quite a common fault and I had it on my 156 V6. I found that the engine would lose almost all power at 5000 rpm in any gear and the car would absolutely refuse to go over 5000 rpm. I took it to the Alfa dealer and I told him that according to this newsgroup it was most likely the MAF. He looked amused and told me that a cat fault was more common, especially if the engine hesitated while braking (which mine didn't). Anyway, after £80 of electronic diagnostics he determined that it was a faulty MAF at £150 IIRC. Rumour has it that the cheaper MAF from the 1.8 156 works in the V6 if you fit it to the plastic housing in the V6 engine. I can't comment on this, but I will say the Alfa dealer hotly denied it. Hope this info helps you :-) Phil 156 V6 1998 |
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