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« Reply #15 on: July 18, 2014, 12:43:01 PM »
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Yes, changed and still same  I have ordered one more, do you think is MAF issue? Here is nowhere can be leak, we tried bypass N75 and N249, brake booster, fpr, press gauge, no other is here. |
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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cam
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« Reply #16 on: August 12, 2014, 06:36:17 AM »
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New MAF - genuine Bosch - third and still same - when i will connect MAF i get error torque monitoring. When is disconnected idle is good.
Lambda control still not active - this can be source of issue but why is still not active?
Any ideas please?
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« Last Edit: August 12, 2014, 08:17:46 AM by cam »
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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TCSTigersClaw
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« Reply #17 on: August 12, 2014, 10:40:46 AM »
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New MAF - genuine Bosch - third and still same - when i will connect MAF i get error torque monitoring. When is disconnected idle is good.
Lambda control still not active - this can be source of issue but why is still not active?
Any ideas please?
If you have the same results with a 3rd new Maf you are going to search for wiring/Maf plug problems. Before you do that I would recommend flashing a basicaly stock file (Injector`s offset etc only ) leave the MAF table alone and see if there are the same results with a basically stock file. |
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VAG cars newbie tuner  |
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cam
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« Reply #18 on: August 12, 2014, 12:27:06 PM »
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Tried with stock injectors, stock file and same results. Wiring is ok. One idea is BOV - open type TIAL. I have open type over year and never been any problem.
Today test result:
idle (with gas pedal playing to stabilize) - MAF reading about 3-5g/s -> engine revs up to about 3000 rpm and leave go back to idle (MAF reading good while) -> at about 1200 will open BOV (open type TIAL) -> MAF reading is about 22g/s -> engine stops much rich
I cant set bov that will not open, anybody knows what to correctly set? N249 valve is good.
Thanks all
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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nyet
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« Reply #19 on: August 12, 2014, 12:37:53 PM »
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Ditch the BOV already. Whether or not it "used" to work, ME7 is not designed to lose air post MAF. Period.
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cam
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« Reply #20 on: August 12, 2014, 01:30:17 PM »
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Ditch the BOV already. Whether or not it "used" to work, ME7 is not designed to lose air post MAF. Period.
Thank you for answer. Understand but i have many engines with open loop BOV without issues but ME7.5 with wb lambdas. This engine ran good last 2 years with open type BOV but now is problem with same setup - this is strange. Wrong is only that is not any reaction for lambda - disconnected, connected - no lambda corrections, no adaptations. |
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« Last Edit: August 12, 2014, 01:32:56 PM by cam »
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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nyet
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« Reply #21 on: August 12, 2014, 01:36:51 PM »
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Understand but i have many engines with open loop BOV without issues but ME7.5 with wb lambdas.
Got it. Agree that with WB a lot of the issues with MAF readings being inaccurate go away. This engine ran good last 2 years with open type BOV but now is problem with same setup - this is strange. Wrong is only that is not any reaction for lambda - disconnected, connected - no lambda corrections, no adaptations.
Sorry, i can't think of anything else to try. Maybe heads? leakdown? |
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cam
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« Reply #22 on: August 12, 2014, 01:46:52 PM »
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Head and crankcase is vented to air from begin.
No leak, one result is opened bov - when bov will be closed, engine will not stops - is not needed to have bov opened.
Anybody have tested some solution for bov closing? Tried some with emulator but result still same, bov is opened above idle.
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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cam
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« Reply #23 on: August 12, 2014, 01:48:01 PM »
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CAN PAY if anybody knows how to fix ... will be a little something ...
And new dtc from now with third MAF now 17743 - Torque monitoring ...
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« Last Edit: August 12, 2014, 02:03:41 PM by cam »
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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TCSTigersClaw
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« Reply #24 on: August 12, 2014, 03:42:23 PM »
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Torque monitoring without MAF/leak problems ? Something is wrong either with your new maf or with the wiring/plug have you ever checked you electric wirings ? Also , take another ME7.5 Ecu and check again . I can`t think of anything else you say you changed everything twice ,did a leak test ,coolant sensor (Important! ) ? ,checked the wiring (?!?) etc. Either you missed something or you didn`t check them well  |
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« Last Edit: August 12, 2014, 03:44:23 PM by TCSTigersClaw »
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VAG cars newbie tuner |
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cam
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« Reply #25 on: August 13, 2014, 01:29:25 AM »
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Torque monitoring without MAF/leak problems ? Something is wrong either with your new maf or with the wiring/plug have you ever checked you electric wirings ? Also , take another ME7.5 Ecu and check again . I can`t think of anything else you say you changed everything twice ,did a leak test ,coolant sensor (Important! ) ? ,checked the wiring (?!?) etc. Either you missed something or you didn`t check them well Strange ... with previous MAF isn't this dtc. I have second ecu - tested. Coolant sensor changed - both are new. Will check wiring again |
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Logged
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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cam
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« Reply #26 on: August 14, 2014, 10:53:05 AM »
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I hate old ME7.5 512kB Solved with new N249 connected in plug and BOV connected directly to intake. Sometimes will stall but usable. Thanks all for suggestions. Tomorrow will buy and install race engine ecu and haldex racing controller. Spend much money to have half working car |
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« Last Edit: August 14, 2014, 02:17:14 PM by cam »
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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TCSTigersClaw
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« Reply #27 on: August 15, 2014, 02:43:03 AM »
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I find it hard to believe that your AFR was so much affected by a faulty N249... I would check again for leaks.
Also you didn`t mention any N249 related DTC`s , is it coded out completely or just the dtc ? if yes remove it completely...
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VAG cars newbie tuner |
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cam
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« Reply #28 on: August 15, 2014, 03:38:57 AM »
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I find it hard to believe that your AFR was so much affected by a faulty N249... I would check again for leaks.
Also you didn`t mention any N249 related DTC`s , is it coded out completely or just the dtc ? if yes remove it completely...
BOV will stay opened and MAF counting with this air so much rich I dont know how to set that i want bov closed as soon as possible. No dtc coded out. Maybe much vacuum - i have 10psi spring in bov and in manifold is about -0,7-1b ... |
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Cadillac Escalade Platinum ESV 6.2 V8
Audi S4 B5 2.7 BITURBO AZB
Audi TTQ 225HP APX (GTX3076R, 875cc, Integrated Engineering intake manifold, TIAL WG, TIAL BOV) sold
Audi Q7 4.2TDI V8 sold
Yamaha YZF-R1, KAWASAKI GTR1400
WinOLS, EVC OLS300 online emulator, EVC BDM, EVC BSL, Autotuner, CMD, Galletto official, Innovate LC-1, 2wd dyno, EVC dealer
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nyet
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« Reply #29 on: August 15, 2014, 09:40:45 AM »
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This is why BOVs are stupid.
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