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low power at low revs?? 

 

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XGsteve
 Post subject: low power at low revs??
Posted: Tue Jul 31, 2007 6:16 pm 
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Hi all, ive just finished putting an AU 4.0l in my XG ute, but it seems to rev slow and realy lack power untill about 2-3 grand then it takes off and revs fine, any ideas on what the hell is goin on?
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Havoc19
Posted: Tue Jul 31, 2007 6:31 pm 
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leads and plugs f**k maybe
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XGsteve
Posted: Tue Jul 31, 2007 6:35 pm 
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replaced them both
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ebfairmont3.9
Posted: Tue Jul 31, 2007 6:48 pm 
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Timing.... Sounds like it could be retarded...

Maybe cam timing unlikely though...
Is it a Log style manifold????

 

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1994 ED Fairmont Champaign Gold - AU Series II Intech 4.0L - EL EFI - Thermo Fans - 4.11 LSD - Pacemaker 4480 Into Custom 3" Exhaust - Shift Kit
In Progress: EL 4 Speed Auto- 3000 STALL - To be fitted
EF Tickford Race Spec Head Port- In the shop
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XGsteve
Posted: Tue Jul 31, 2007 6:50 pm 
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Nah its the bbm manifold
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joshannon.7
Posted: Tue Jul 31, 2007 6:52 pm 
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what ecu are you running? dunno if it matters just a thought.

 

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XGsteve
Posted: Tue Jul 31, 2007 6:57 pm 
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its an EL ECU, i was told i had to run it with the bbm
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ebfairmont3.9
Posted: Tue Jul 31, 2007 6:59 pm 
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Ahhhh have you plummed the BBM correctly??? If the Manifold is on HIGH rpm mode it will be a bloody pig off the mark. and normal up high.

 

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1994 ED Fairmont Champaign Gold - AU Series II Intech 4.0L - EL EFI - Thermo Fans - 4.11 LSD - Pacemaker 4480 Into Custom 3" Exhaust - Shift Kit
In Progress: EL 4 Speed Auto- 3000 STALL - To be fitted
EF Tickford Race Spec Head Port- In the shop
Custom SureCam - Chiptorque
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XGsteve
Posted: Tue Jul 31, 2007 7:11 pm 
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ill give that a try when i get home and let you know how it goes
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ebfairmont3.9
Posted: Tue Jul 31, 2007 7:23 pm 
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you need to run wires to the ECU to setup the manifold switching...

you will need the solenoid from an EL its behind the wiper washer bottle and you need all the piping to go with.

 

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1994 ED Fairmont Champaign Gold - AU Series II Intech 4.0L - EL EFI - Thermo Fans - 4.11 LSD - Pacemaker 4480 Into Custom 3" Exhaust - Shift Kit
In Progress: EL 4 Speed Auto- 3000 STALL - To be fitted
EF Tickford Race Spec Head Port- In the shop
Custom SureCam - Chiptorque
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XGsteve
Posted: Wed Aug 01, 2007 5:10 pm 
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yeah i got the solenoide there and it seems to be switching the manifold open fine
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XGsteve
Posted: Fri Aug 03, 2007 5:06 pm 
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hey guys my utes still playin up anybody got any ideas?
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XGsteve
Posted: Fri Aug 24, 2007 8:26 pm 
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any ideas???? ive tryd disconecting bbm but still does the same, ived tryd running the old xg ecu but still the same, any suggestions would be great
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