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ef power surge 

 

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 Post subject: ef power surge
Posted: Fri Jan 11, 2013 7:18 pm 
Smokin em up
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Age: 23

Posts: 201

Joined: 24th Aug 2012

Ride: 1987 telstar/2004 BA XR6 5spd

Location: Newcastle
NSW, Australia

hey guys, after putting my new motor in and driving it for a while iv noticed when im just crusing along ( very little if any throttle ) the car will jolt every now and then...kinda like a took a small stab at the accelerator...it's not bad enough to cause any discomfort but am worried that it might be the start of somthing worse...spart seems to be fine...there is no fuel leaking out of the injectors..has a brand new throttle body and all associated bolt on's...the idle dose seem to be rough..but not all the time...it kinda comes and goes..iv sprayed carbi/throttle body cleaner on all the vacume joins and hoses in the engine bay and there dosnt seem to be a vacume leak ether...the fuel filter is less then a year old too...when the motor was out i pulled the came angle sensor out to get to the welch plug behind it..it put it back the same way i took it out...could that be part of the issue...there is plenty of power...im stumped :S
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 Post subject: Re: ef power surge
Posted: Sat Jan 12, 2013 8:24 am 
Moderator
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Age: 40

Posts: 2327

Joined: 6th Oct 2005

Ride: 93EB Fairmont / BA Falcon XR6T

Location: Western Sydney
NSW, Australia

Check and clean the ISC for a start is what i would do.

 

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93 EB II Fairmon8 with 17' EL GT's / Clear indicators / H.I.Ds / Sports exhaust / Lowered 2' / K&N / XR6 ECU.
2004 BA MKI XR6T in Lightning Strike paint / K&N / XR8 bonnet / BF lights and a few tweaks.

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 Post subject: Re: ef power surge
Posted: Sat Jan 12, 2013 11:44 am 
Smokin em up
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Age: 23

Posts: 201

Joined: 24th Aug 2012

Ride: 1987 telstar/2004 BA XR6 5spd

Location: Newcastle
NSW, Australia

i cleaned it before the motor went in...
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 Post subject: Re: ef power surge
Posted: Sat Jan 12, 2013 6:22 pm 
Parts Gopher
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Age: 45

Posts: 86

Joined: 6th Feb 2011

Ride: AUII wagon 4.0L, BA 4.0L hack

Location: Flinders View
QLD, Australia

silly question but did you reset the ECU properly?

 

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 Post subject: Re: ef power surge
Posted: Sun Jan 13, 2013 3:23 pm 
Smokin em up
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Age: 23

Posts: 201

Joined: 24th Aug 2012

Ride: 1987 telstar/2004 BA XR6 5spd

Location: Newcastle
NSW, Australia

seems the issue was some where in the drive line. i got the gearbox oil topped up and tailshaft bolts tightend and now it's fine
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 Post subject: Re: ef power surge
Posted: Mon Jan 21, 2013 7:49 pm 
Smokin em up
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Age: 23

Posts: 201

Joined: 24th Aug 2012

Ride: 1987 telstar/2004 BA XR6 5spd

Location: Newcastle
NSW, Australia

i have worked out that the motor seems to miss when it's warmed up and on light load...any ideas??
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 Post subject: Re: ef power surge
Posted: Tue Jan 22, 2013 10:42 am 
Getting Side Ways
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Posts: 836

Joined: 1st Apr 2005

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Ride: EF XR6 Wagon, AU2 XR6 VCT

Power: 148 rwkw

Location: Auckland
New Zealand

If all else fails, check for vacuum leaks. This can produce some odd, hard-to-diagnose problems. Spray parts cleaner or brake cleaner spray along all vacuum hoses and all gaskets on the intake side. If there is a leak, the spray gets sucked in and the revs jump. Don't use start spray - it's not flammable enough, so sometimes it doesn't find the leak (as I found out the hard way after replacing a couple hundred bucks worth of perfectly good parts).

 

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