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XR8 with no power?????? 

 

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 Post subject: XR8 with no power??????
Posted: Thu Sep 27, 2007 11:25 pm 
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Age: 36

Posts: 197

Joined: 5th Jun 2007

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Ride: AUIII XR6 HP

Power: 137 rwkw

Location: sydney
NSW, Australia

Got a call from a mate tonight who said he was racing someone earlier and when he let off the accellorator, the car choked, engine light came on for a bit then went off. Now when you drive it normally it goes ok until you put your foot down it makes no power. The revs still build gradually like you had 1/4 throttle only? But no kick back surge of power. Checked the intake thinking it was blocked but its fine, it starts and idles fine. Could it be a fuel pressure problem?

 

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Posted: Fri Sep 28, 2007 12:51 am 
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Ride: EF Ghia 5.0

Location: Adelaide
SA, Australia

Very likely. I've had constant fuel pressure probs in my 5.0 for years.

Does it backfire through the airbox under load?

Mike

 

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Posted: Fri Sep 28, 2007 9:46 am 
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Age: 36

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Gallery: 12 images

Ride: AUIII XR6 HP

Power: 137 rwkw

Location: sydney
NSW, Australia

No runs perfect just no go when you floor it

 

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Posted: Fri Sep 28, 2007 9:55 am 
Getting Side Ways
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Power: 482 rwkw

Location: Penrith
NSW, Australia

Check maf or clean..
Check for air leaks between maf and engine?
Check all fuel delivery.. Pump, filter etc..
Ignition as in leads, cap and plugs..
If in doubt? Replace...
Check cats ?? They may have broken and restricting exhaust??

 

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Posted: Fri Sep 28, 2007 3:17 pm 
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Ride: BA XR8

Location: wollongong
NSW, Australia

Might be totally wrong, but do xr8 have 'limp mode' where it suspects something is wrong with the engine and the computer won't let you drive it hard...?
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Posted: Fri Sep 28, 2007 6:58 pm 
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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Run a diagnostic check. If it's sensors or anything like that, it'll tell you

 

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Posted: Sat Sep 29, 2007 10:32 pm 
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Age: 36

Posts: 197

Joined: 5th Jun 2007

Gallery: 12 images

Ride: AUIII XR6 HP

Power: 137 rwkw

Location: sydney
NSW, Australia

Problem solved, the exhaust split open at the front. No backpressure. Who would have thought?

 

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