DID NOT WANT TO GO???????
07 March 2004, 05:15 PM
#1
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DID NOT WANT TO GO???????
Hi
I have a MY00 PPP which normally runs about 16psi boost.
Today I put my foot down to overtake expecting it to go.
It got to 8 psi and just would'nt go.
I eased off, and then put my foot down and this time it made full boost but started to drop off rapidly.
I tried a couple of times more and both times it made boost but kept dropping boost off as it went through the revs.
Anyone have any ideas???????????????????
please help
I have a MY00 PPP which normally runs about 16psi boost.
Today I put my foot down to overtake expecting it to go.
It got to 8 psi and just would'nt go.
I eased off, and then put my foot down and this time it made full boost but started to drop off rapidly.
I tried a couple of times more and both times it made boost but kept dropping boost off as it went through the revs.
Anyone have any ideas???????????????????
please help
07 March 2004, 07:01 PM
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Originally Posted by jtabraham
Hi
I have a MY00 PPP which normally runs about 16psi boost.
Today I put my foot down to overtake expecting it to go.
It got to 8 psi and just would'nt go.
I eased off, and then put my foot down and this time it made full boost but started to drop off rapidly.
I tried a couple of times more and both times it made boost but kept dropping boost off as it went through the revs.
Anyone have any ideas???????????????????
please help
I have a MY00 PPP which normally runs about 16psi boost.
Today I put my foot down to overtake expecting it to go.
It got to 8 psi and just would'nt go.
I eased off, and then put my foot down and this time it made full boost but started to drop off rapidly.
I tried a couple of times more and both times it made boost but kept dropping boost off as it went through the revs.
Anyone have any ideas???????????????????
please help
07 March 2004, 11:19 PM
#7
When you were waiting to overtake were you hoding in a low gear for very long?
There's some ECU feature (for emissions - as far as I can fathom) that cuts the boost if you hold the engine at highish revs and light throttle for longer than 15 or so seconds. Boost is about half of what you usually get when you floor it.
Way round it is to stay in a high gear and drop into 2nd or whatever gear you need just when you about to overtake. Irritating - I know
There's some ECU feature (for emissions - as far as I can fathom) that cuts the boost if you hold the engine at highish revs and light throttle for longer than 15 or so seconds. Boost is about half of what you usually get when you floor it.
Way round it is to stay in a high gear and drop into 2nd or whatever gear you need just when you about to overtake. Irritating - I know
Last edited by ALi-B; 07 March 2004 at 11:20 PM.
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08 March 2004, 12:53 AM
#8
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Hi
Cheers Ali
I think that could be the problem, I came off a round about in 2nd and had to wait a few seconds for a gap.
I hope this is the problem.
Its been no trouble at all tonight.
Cheers
JT
Cheers Ali
I think that could be the problem, I came off a round about in 2nd and had to wait a few seconds for a gap.
I hope this is the problem.
Its been no trouble at all tonight.
Cheers
JT
08 March 2004, 10:42 AM
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If your symptoms are only in 2nd gear, then yes, that's an unfortunate feature of the stock boost control of the AE802 ECU. Your only way round it is to fit a manual boost controller, like a Dawes, which bypasses the wastegate solenoid...
09 March 2004, 01:08 PM
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Hi
thanks
for all the advice.
I am pretty sure after a couple of days driving that it is the cut from the ECU.
I am fitting a GBE device and this will hopefully stop it happening again.
Cheers
JT
thanks
for all the advice.
I am pretty sure after a couple of days driving that it is the cut from the ECU.
I am fitting a GBE device and this will hopefully stop it happening again.
Cheers
JT
09 March 2004, 01:24 PM
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So you would be better finding why the ecu is cutting the boost than just stopping the ecu doing it..
Unless of course you like rebuilding engines??
JGM
Unless of course you like rebuilding engines??
JGM
09 March 2004, 01:29 PM
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This recent post may be of interest to you, seeing as you're using the GBE...
Edited to say, JGM I think he's referring to the AE802 hesitation problem...
Edited to say, JGM I think he's referring to the AE802 hesitation problem...
Last edited by The_Judge; 09 March 2004 at 01:31 PM.