Gunzy
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« on: March 31, 2014, 03:36:28 PM »
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So I've gone through like 4 MAP sensors in 6 months. Always after a high RPM 3-4 gear pull. Replaces the connector and it blew the next day again. What gives, the harness appears good, grounds are solid, every time it has blown its been a WOT pull above 7k, one time it blew immediately after my TBB boot blew off.
Car is running 30psi on gt28's for reference. Thanks for any ideas.
Codes:
Manifold/barometric sensor (g71)/(f96): implausible signal
Manifold pressure/boost sensor (g31): signal too low
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ddillenger
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« Reply #1 on: March 31, 2014, 03:52:12 PM »
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Do you have the N249 still?
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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DDillenger84(at)gmail(dot)com
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Gunzy
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« Reply #2 on: March 31, 2014, 04:01:03 PM »
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Yea I do.
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Gunzy
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« Reply #3 on: March 31, 2014, 04:01:46 PM »
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Also, I'm running a MBC if that changes anything.
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phila_dot
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« Reply #4 on: March 31, 2014, 04:24:25 PM »
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Didn't you say that the N249 was deleted in your thread on AZ?
Post the P-codes
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ddillenger
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« Reply #5 on: March 31, 2014, 04:33:25 PM »
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Sounds like the N249 isn't working to me. Massive boost spikes far in excess of the rating.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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nyet
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« Reply #6 on: March 31, 2014, 04:40:08 PM »
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Sounds like the N249 isn't working to me. Massive boost spikes far in excess of the rating.
2nd. I can't imagine the turbo is going to last long if he's been blowing MAPs. |
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Gunzy
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« Reply #7 on: March 31, 2014, 04:47:33 PM »
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I thought that it had been deleted but that was my old car, it is hooked up, I went ouT to the car and double checked. Those codes were:
16621 - Manifold Pressure / Boost Sensor (G31): signal too low
P0237 - 35-00--
16490 - Manifold / Barometric Pressure Sensor (G71) / (F96): implausible signal
P0106 - 35-00--
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Gunzy
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« Reply #8 on: March 31, 2014, 04:48:10 PM »
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Boost guage and zeitronix shows 30psi constant
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Gunzy
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« Reply #9 on: March 31, 2014, 04:49:11 PM »
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Also, sorry meant if I didn't say, built motor/heads twin gt2863x b5 s4.
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nyet
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« Reply #10 on: March 31, 2014, 04:55:07 PM »
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Also, sorry meant if I didn't say, built motor/heads twin gt2863x b5 s4.
I'd consider running a different MAP at this point. You don't have to do the whole 5120 hack, you'd only have to fix the MAP transfer function. |
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Gunzy
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« Reply #11 on: March 31, 2014, 05:04:35 PM »
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TDI map or something?
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phila_dot
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« Reply #12 on: March 31, 2014, 06:11:17 PM »
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I'd consider running a different MAP at this point.
You don't have to do the whole 5120 hack, you'd only have to fix the MAP transfer function.
I've never heard of a sensor just dying from too much pressure. Shock from the TBB flying off or maybe even 30 PSI and N249 delete makes sense, but not almost a MAP a month just from relatively high boost pressure. IMO it's either a wiring issue with his Zeitronix controller or engine harness or it's his ECU (barometric pressure sensor G91). OP, anyway you can test one of your blown MAP's in another S4? |
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Gunzy
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« Reply #13 on: March 31, 2014, 06:38:31 PM »
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Not really, I can maybe send one out to someone but I don't know anyone around with a B5 unfortunately.
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Gunzy
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« Reply #14 on: March 31, 2014, 06:42:14 PM »
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Another thing is, it only happens in a hard 3-4th gear run, high pressure and I haven't monitored the 4th gear spike. I'm on 710n's too, maybe they can't handle the hit?
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