power problem

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THE DON
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power problem

Post by THE DON »

Hey all,

I have a problem with my 'W' plate Mr2 Rev 5 (n/a)

I have noticed that when I get to 5,000 rpm in 4th/5th gear it doesn't seem to want to give any more power - there is no engine management lights or any funny noises/smells, it just seems to not want to go past that point. Basically when it gets to 100mph there is nothing left.


Up until then she pulls strong (most of the time - i think acis may be intermittent as sometimes its a more noticeable change when that kicks in, other times hardly noticeable at all)

but it just feels like there is not a lot left - now I do know that it used to pull fine past that point

Im aware there is no MAF sensor to clean/replace on my model - anything else worth looking at. There are no leaks, no strange noises, nothing that points at anything untowards, so that is why I have approached this fountain of knowledge! Please help :)

thanks in advance

Don


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peteV6R5
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Re: power problem

Post by peteV6R5 »

THE DON wrote: I have noticed that when I get to 5,000 rpm in 4th/5th gear it doesn't seem to want to give any more power - there is no engine management lights or any funny noises/smells, it just seems to not want to go past that point.
Up until then she pulls strong (most of the time - i think acis may be intermittent as sometimes its a more noticeable change when that kicks in, other times hardly noticeable at all
is it the same in any gear? you say that ASICs is not always prominent?

Check your VAC pipes and actuators - sounds like you have sluggish ASIC's.

There was a thread not that long ago that detailed how to check and clean asics fully.
Check in KY2 also.
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Topic author
THE DON
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Re: power problem

Post by THE DON »

it is intermittent (asics) sometimes is it prominent when it kicks in, other times, its less. It only seems to hold back in 4th and 5th

what is KY2?
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peteV6R5
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Re: power problem

Post by peteV6R5 »

THE DON wrote:it is intermittent (asics) sometimes is it prominent when it kicks in, other times, its less. It only seems to hold back in 4th and 5th

what is KY2?
sorry ---- our know your 2 knowledge base

other thing do you still have standard exhaust. Had standard on mine and when I went to Mongoose it opened up so many more horses.
with old exhaust 144bhp my 1st ever RR day - with mongoose 165bhp and much more responsive.
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Topic author
THE DON
Posts: 16
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Location: North Wales
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Re: power problem

Post by THE DON »

my exhaust is a custom made decat, and have had that for about 4 months with no issues and it did open the power up quite a bit!
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chris
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Re: power problem

Post by chris »

butterfly valve on the ACIS chamber may be sticking
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chris
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Re: power problem

Post by chris »

peteV6R5 wrote:sounds like you have sluggish ASIC's
an example of sluggish ASICs for you... ;) :D
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peteV6R5
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Re: power problem

Post by peteV6R5 »

chris wrote:
peteV6R5 wrote:sounds like you have sluggish ASIC's
an example of sluggish ASICs for you... ;) :D
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:rofl: :clapping: teach me not to double check
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