05-23-2022, 06:07 PM | #1 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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RPM Drop slowing
Installed LT2 intake manifold and Roto Fab now getting CEL p0106 and when I come to a stop and slow down the RPMs drop quickly to 500 and then go right back up to 1k. What is going on? Torqued to 89in/lbs and looks as if all my intake tubes are sealed. Seems to drive fine but almost tries to stall at the slow down.
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05-23-2022, 06:18 PM | #2 |
Drives: like an old lady Join Date: Jun 2012
Location: indiana
Posts: 2,396
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sounds like you need to check the wiring and connections on the map sensor. disconnect everything, inspect it thoroughly, reconnect. if everything is good, perhaps you have a faulty extension. which one are you using?
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2016+ camaro: everyone’s first car
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05-23-2022, 06:34 PM | #3 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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GPI is the extension I’m using. Came with the intake manifold
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05-23-2022, 07:37 PM | #4 |
Drives: 2018 2ss m6 Join Date: Aug 2021
Location: Clemson SC
Posts: 35
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Did you disconnect power when you installed the intake? I didn’t, and I had goofy problems until I disconnected and let it rest for 30 minutes or so. After that all codes cleared and runs good. Same setup here, LT2 and Rotofab
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05-23-2022, 07:51 PM | #5 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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I had it disconnected. Maybe it is just relearning the air flow? Just the RPM drop when slowing down confused me. Drops to under 500 then jumps right back to 750-1k in a split second after.
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05-24-2022, 06:29 AM | #6 |
Drives: 2017 Camaro SS 50th Anniversary Join Date: Apr 2021
Location: Missouri
Posts: 929
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Do you need to get the tune adjusted for manifold volume and MAF characteristics?
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05-24-2022, 10:39 AM | #7 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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Shouldn't many owners do it without a tune so im just not sure if I have a vacuum leak or what could have happened it hard to find a leak specifically. Might take the foam out from under the IM and try it that way.
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05-24-2022, 11:12 AM | #8 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,183
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Is your hood compressing that PCV line? Others have installed a 45 deg fitting to prevent hose crush. If PCV is getting pinched it could alter manifold pressure. the P0106 code is unexpected change in manifold pressure.
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05-24-2022, 01:00 PM | #9 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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Just ordered a 90 degree to see if it is that but still not sure where else vacuum leaks could be. I'll remove foam from under IM and check the brake booster fitting with some brake cleaner and see if engine revs.
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05-24-2022, 01:03 PM | #10 | |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,183
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Quote:
Do you have a scan tool which lets you monitor the MAP reading? Would be nice to know if it is going up or down to throw the code and/or vehicle coming to a stop. |
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05-24-2022, 01:19 PM | #11 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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That I do not only OBD scanner nothing MAP specific
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05-25-2022, 11:44 AM | #12 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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took foam out still did not help. When i get on the gas real hard it shuts off the power to reduced engine power and shuts the car off....anything i should check now
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05-25-2022, 01:50 PM | #13 | |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
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Quote:
I'm sure you know your stuff, but here's MSD's install instructs- https://documents.holley.com/2700.pdf |
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05-25-2022, 02:27 PM | #14 |
Drives: 2019 2SS/1LE Shadow Grey Join Date: Nov 2015
Location: DE
Posts: 156
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yeah I torqued them in order
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