1996 Volvo 850 T5Ok, not sure what I can do about this, but my second ECU (which has always been suspect) has a problem, I took out the fuel rail to see why it over fuels, and there is a constant spray out of injector three, as soon as you unplug the injector the flow stops, plug it back in and the flow starts, even with the ignition off as long as there is pressure in the rail it injects, any thoughts from the ECU Gurus?
No wonder we couldn't get the afr's right on Paul's car.
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Thread: TT USB Problem
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Tuesday 19th August 2014, 16:42 #1Whiny Old Git
Aching bones :(
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Tuesday 19th August 2014, 16:58 #2Senior Member
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is it worth trying your other ecu just to make sure its not a wiring issue? and plug the harness onto another injector just to rule everything else out? sorry you may have done all this but I always start with the basics back to the bigger more expensive possibilities
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Tuesday 19th August 2014, 17:12 #3Senior Member
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T35, 556Nm/410lbft & 361BHP/317WHP
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Tuesday 19th August 2014, 17:49 #4Senior Member
a 19t just isn't laggy enough
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Originally Posted by Jamest5r
Call Adam
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Tuesday 19th August 2014, 18:17 #5Whiny Old Git
Aching bones :(
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Thanked 4,999 Times in 3,015 PostsYep, runs fine on the front engine ecu, and yes I tried another injector and it does the same.
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Tuesday 19th August 2014, 18:20 #6Senior Member
VPCUK Car of the Year 2013
Jim
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Thanked 5,282 Times in 3,549 PostsHe has to the Yank distributor, but im sure he hasn't forgotten everything he developed lol Originally Posted by p fandango
T35, 556Nm/410lbft & 361BHP/317WHP
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Tuesday 19th August 2014, 18:25 #7Whiny Old Git
Aching bones :(
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Tuesday 19th August 2014, 20:07 #8Senior Member
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Thanked 1,313 Times in 877 Postsmy spare TT needs flashing evertime I try to use it
stupid question, but you have flashed it??
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Tuesday 19th August 2014, 20:15 #9Whiny Old Git
Aching bones :(
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Thanked 4,999 Times in 3,015 PostsNo, how do you do that?
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Tuesday 19th August 2014, 20:23 #10Senior Member
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Thanked 5,282 Times in 3,549 PostsIm sure he means just uploading the map each time Originally Posted by claymore
T35, 556Nm/410lbft & 361BHP/317WHP
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Tuesday 19th August 2014, 20:25 #11Senior Member
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Thanked 1,313 Times in 877 Postsyea, upload 1 of the standard maps
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Tuesday 19th August 2014, 20:35 #12Whiny Old Git
Aching bones :(
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Thanked 4,999 Times in 3,015 PostsYep tried all that in the past. Originally Posted by JT
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Tuesday 19th August 2014, 20:55 #13Ghost Rider
If I want your opinion, I'll
ask you to fill out the
necessary forms
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Thanked 1,921 Times in 1,186 PostsIf the fault follows the ECU it couldn`t be a wiring fault and if you have uploaded new files it`s not a software fault.
It looks more and likely the fault is inside the ecu with the PCB
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
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Tuesday 19th August 2014, 20:58 #14Senior Member
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Thanked 1,313 Times in 877 Postsand if youve tried your other TT and thats fine, must be a software issue,
which is way over my head lol
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Tuesday 19th August 2014, 21:09 #15Senior Member
Blah Blah Blah!
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It didn't work in my car, but, it 'apparently' worked in the car of the person I bought it off.
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claymore (Tuesday 19th August 2014)
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Tuesday 19th August 2014, 21:13 #16Whiny Old Git
Aching bones :(
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Thanked 4,999 Times in 3,015 PostsExactly my thoughts. Originally Posted by oblark
If the fault follows the ECU it couldn`t be a wiring fault and if you have uploaded new files it`s not a software fault.
It looks more and likely the fault is inside the ecu with the PCBPIC][/SIGPIC]
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Wednesday 20th August 2014, 06:45 #17Senior Member
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Thanked 1,313 Times in 877 Postsyea, what rob said!
told you it was over my head
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Wednesday 20th August 2014, 21:08 #18New Identity
Back in an AWD....Oh the grip!
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Thanked 2,582 Times in 2,051 PostsI'd try and trace it back through the ecu, possibly one of the injector transistors... I'll have to get my broken ecu out to see if I can identify which one it is. From the wiring diagram injector 3 goes to pin A24 on the ecu. I'll see what I can find.
1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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