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Posted: Mon Nov 10, 2008 11:15 pm 
Getting Side Ways
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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

This problem is only new Jeff. I didn't have any of these dramas when I got it done. Cos of work, I've not driven the car much lately. But it first went to s**t while I was cruising down the freeway a few months back, but only 300 - 400km ago.

I've got it booked in to Ford for a diagnostic check on Wednesday. Can anyone tell me how long this should take? The bird on the phone reckons 2 - 3 hours, it al depends on how long the computer takes. I'm sure it only takes a few minutes... But I'd better check before I start accusing them of trying to stooge me!

 

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Posted: Mon Nov 10, 2008 11:27 pm 
Getting Side Ways
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Ride: ef xr8

Power: 229 rwkw

Location: Perth
WA, Australia

Ford wouldnt know what they would be looking at. They'd scan for codes but probably when they see what you are running, it'll more than likely become a stalemate.

If the Tune is the problem, see a tuner about it.

 

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'95 EF XR8 auto, Advance headers, 3" exhaust, Cobra manifold, BBK 75mm throttle body , 80MM Marauder MAF, Vortech V2 T Trim , 307 rwhp, 405 ft/lb 13.2 @ 105 MPH

Now N/A (permanent Lag) - AFR 165's, Comp XE270 cam, 1.6 RR - 269 rwhp 14.1 @ 102mph.

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Posted: Tue Nov 11, 2008 12:10 am 
Getting Side Ways
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Age: 39

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Joined: 26th Nov 2006

Gallery: 7 images

Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

Yeah, but if it was just the tune then it wouldn't be intermittent. The way I see it, it is something that effects the tune, such as a sensor or something. I'm not interested in getting ford to fix it for me, I just want the codes and I'll replace what I need to if anything. Otherwise, I'll have to come up with another plan. It could be something like a loose wire in a plug somewhere for all I know. I hope not though.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Tue Nov 11, 2008 7:01 am 
Smokin em up
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Have you ruled out your TFI module? There known to cause cause some of the problems your having when there on there way out or have a bad connection etc.
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Posted: Tue Nov 11, 2008 7:52 am 
Getting Side Ways
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Sounds like the fuel side as in accelerator pump needs increasing in ECU settings.. If it can be done..

 

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Posted: Tue Nov 11, 2008 8:45 am 
Getting Side Ways
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Age: 39

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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

EBXR8380 wrote:
Sounds like the fuel side as in accelerator pump needs increasing in ECU settings.. If it can be done..


If I'm unable to work out what the reason is for it switching between good and bad every now and then, I will attempt to fix it through the tune. I'm worried that if I adjust the tune for the lean condition now, then it decides to go back to the way it was, before this problem when it was already running rich, it will be even richer still.

Swine - No, I haven't yet ruled the tfi out. I need to find one to change out and see. I'll have a dig through all my old stuff and see if my old one is in there.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Tue Nov 11, 2008 5:55 pm 
Getting Side Ways
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Age: 39

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Joined: 26th Nov 2006

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Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

10 points goes to s-tranzor!

I pulled the hegos today and the passenger side one was smashed. Whatever is inside it was rattling around. Replaced it and now she's back to her old self. I learnt a couple of lessons going through all this.

1. Don't disregard something just because you've replaced it recently.

2. If you have a series 1 EL xr8, your ect & iat sensors are different to those out of a series 2 EL xr8, but the same as the EF.

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Tue Nov 11, 2008 7:58 pm 
Getting Side Ways
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Ride: EFII 5.8 NOS TerroristGhia

Power: 274 rwkw

Location: Sydney Australia
NSW, Australia

^^^ Sensores are different due to manifolds. S1 has HO, S2 has Explorer. Well done on the fix
Brett

 

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Posted: Fri Nov 14, 2008 3:19 pm 
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s-tranzor wrote:
out of curiosity Scaffy, what conditions are you planting it under? IE, what gear, speed before plant and RPM... Also, does it ping during hill climbs when/or if it's running a bit hot?


reason I ask is mine used to do same thing. After I replaced O2 sensors and took it back to BPT for a dynotune (last tuesday) it was fine. Apparently it was running too lean due to bad sensors. He was able to richen the AFR which gave more torque and better idle when hot... runs cooler now too.

Yes he was right :D
How the hell did you manage to break an o2 sensor?

 

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Posted: Sat Nov 15, 2008 4:01 pm 
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Ride: XC GXL

Location: perth
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Ifyou cycle the key( turn it off then start it again) and it drives sweet for say 30 seconds then it maybe an issue with closed/open loop mode, suggesting an electronic issue, like you suspect. The o2 sensors are an input to the ECU, allowing it to adjust the AFR(air fuel ratio) accordingly. A backfire indicates a lean mixture and can be caused by a vacuum leak,(EGR diaphragm) or fuel pressure(you checked it). If the ignition system is sweet Id be looking at the EGR, but the IAT (intake air temp) sensors fail also. (bloody hell is there any more) :roll: Never changed an ECT.

 

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Posted: Sat Nov 15, 2008 4:04 pm 
Parts Gopher
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Ride: XC GXL

Location: perth
WA, Australia

Sweet ya fixed it. Disregard last waffle.

 

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XC GXL 5.8: 14.1 @ 99MPH. Thank you to Jimbos alchoholic uncle for the short motor. It goes alright now mate.

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Posted: Sun Nov 16, 2008 9:26 am 
Getting Side Ways
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Age: 39

Posts: 1886

Joined: 26th Nov 2006

Gallery: 7 images

Ride: EL XR8, '08 Mondeo XR5t

Power: 205 rwkw

Location: Perth
WA, Australia

green car wrote:
s-tranzor wrote:
out of curiosity Scaffy, what conditions are you planting it under? IE, what gear, speed before plant and RPM... Also, does it ping during hill climbs when/or if it's running a bit hot?


reason I ask is mine used to do same thing. After I replaced O2 sensors and took it back to BPT for a dynotune (last tuesday) it was fine. Apparently it was running too lean due to bad sensors. He was able to richen the AFR which gave more torque and better idle when hot... runs cooler now too.

Yes he was right :D
How the hell did you manage to break an o2 sensor?


I've got no idea Shannon, I thought maybe a rock could have flicked up, but that part is inside the exhaust, so who knows. Maybe half a valve hit it or something?! Haha

 

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Trickflow Street Heat top end kit, 70mm BBK TB & EGR, 24lb injectors, Underdrives & 3.73s: 275rwhp - 13.15@105mph NA / 12.37@116mph N20

When injustice becomes law, resistance becomes duty

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Posted: Sun Nov 16, 2008 11:13 am 
Getting Side Ways
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Ride: 1999 XHII XR8, 2002 AU Fairmont

Power: 236 rwkw

Location: Perth
WA, Australia

Scaffy wrote:
Maybe half a valve hit it or something?! Haha


Half a valve hit it??? I hope not :lol:

 

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Posted: Sun Nov 16, 2008 12:08 pm 
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Ride: EF XR8 347

Power: 232 rwkw

Location: Perth
WA, Australia

YaY!

 

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