Have you checked google?..
Just looked and there's loads if you get stuck and nobody on here can help.
http://www.preludepower.com/forums/show ... p?t=227198
https://www.google.com/search?q=prelude ... =firefox-b
Congratulations to vtecmec for winning May/June's Lude Of The Month, with his DIY Turbo BB1 build.
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Lude won't rev over 3k
Engine/Gearbox questions and discussion
crxdriver
- vanzep
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Post by vanzep » Sun May 27, 2018 8:27 am
Only similar problem i had like that before was when the timing belt slipped due to faulty autotensioner - car would only rev to 3k.
I hope thats not the problem you have but you could check the timing by removing the rocker cover and upper belt cover.
I hope thats not the problem you have but you could check the timing by removing the rocker cover and upper belt cover.
1996-2000 1993 EG9 Blue Civic 1.6 Vti - Traded in against the BB4
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD
2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC
vanzep
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Post by wurlycorner » Sun May 27, 2018 3:04 pm
No chance to look at it last night, hopefully this evening.
Broke the spare (used) knock sensor on attempted removal (think that's common - they go brittle)
Have two spare ecu's on hand, no idea what they came off and whether auto or manual (forgotten how you tell - is it the "MT" bit? !)


Broke the spare (used) knock sensor on attempted removal (think that's common - they go brittle)
Have two spare ecu's on hand, no idea what they came off and whether auto or manual (forgotten how you tell - is it the "MT" bit? !)


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Iain.
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wurlycorner
Vtecmec
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Post by wurlycorner » Mon Jul 09, 2018 2:33 pm
Right, sorry I didn't update this thread... It was all a rush at the time!
Problem was sorted.
Fixing the exhaust (getting the holes welded up) and changing the Lambda sensor made no difference - same problem.
So basically I had ruled out all the service items on the ignition system by that point (plugs/leads/cap/rotor) plus the lambda sensor and the VTEC controller, but not;
- Coil
- Knock Sensor
- ECU
I swapped in a spare ECU and... It was immediately fine and hasn't re-ocurred since (now nearly 2 months later).
I'm frankly, amazed - really find it hard to believe that the ECU has failed (but no doubting that's what it was) and, more worryingly... if it has, I'm wondering what caused it to fail!
I have had the knackered ECU apart since and can't see any obvious problems with it at all.
Anyway, am now rocking a standard/non-chipped ECU again...
woo!
Problem was sorted.
Fixing the exhaust (getting the holes welded up) and changing the Lambda sensor made no difference - same problem.
So basically I had ruled out all the service items on the ignition system by that point (plugs/leads/cap/rotor) plus the lambda sensor and the VTEC controller, but not;
- Coil
- Knock Sensor
- ECU
I swapped in a spare ECU and... It was immediately fine and hasn't re-ocurred since (now nearly 2 months later).
I'm frankly, amazed - really find it hard to believe that the ECU has failed (but no doubting that's what it was) and, more worryingly... if it has, I'm wondering what caused it to fail!
I have had the knackered ECU apart since and can't see any obvious problems with it at all.
Anyway, am now rocking a standard/non-chipped ECU again...

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Iain.
Iain.
Super Secret 1G (not really super secret!)
wurlycorner
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Post by Free Ranj Egg » Mon Jul 09, 2018 3:35 pm
lol.. it can be pain cant it.
I have decided to leave work at 4 and call the AA guys over and see what they have to say. Considering I pay them I may as well make use of them.
Your car however seems to be a bit of a mind maze bud.
I have decided to leave work at 4 and call the AA guys over and see what they have to say. Considering I pay them I may as well make use of them.
Your car however seems to be a bit of a mind maze bud.
I came before the chicken.. The argument is now settled!!
H22A8 197 motor with 190k on the clock
Tanabe lowering springs.
Skunk 2 megapower exhaust with a decat
M2B4 LSD Gearbox
Lightened flywheel
S2000 Steering Wheel
Type S Door inserts in Red
H22A8 197 motor with 190k on the clock
Tanabe lowering springs.
Skunk 2 megapower exhaust with a decat
M2B4 LSD Gearbox
Lightened flywheel
S2000 Steering Wheel
Type S Door inserts in Red
Free Ranj Egg
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