Possible turbo issue
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
I scanned through quickly and didn't see what you were using to read your parameters with......
Another test is to use some air and pressure up the sensors (MAP and EBP) to see if they respond.
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I guess I don't understand how you're supposed to get 14PSI +\- KOEO, how does it build back pressure without running?
But anyways, what do I need to do to get this thing within spec? Replace the connector?
But anyways, what do I need to do to get this thing within spec? Replace the connector?
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
Basically the MAP, EBP, and BARO are calibrated to read atmospheric pressure at KOEO which is ~ 14.4 at sea level. All 3 sensors should read within 1.5 psi of each other at KOEO. That's an easy test to see if you have a bad sensor, wire, connector, etc. Since your EBP is reading 0 at KOEO there is a problem there somewhere.
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Once the engine is running, EBP might show up to 16 psi, Map = Baro+ boost so you could see MAP up to 1 psi over Baro at idle.
Josh
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From: SW Florida
What if you remove the EBP sensor, hook up the wire harness to it and see what you get at KOEO?
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Josh
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Yesterday before I replaced the sensor I unplugged the sensor then started it to see what happened, and it was reading like 37 psi at idle, the turbo also sounded really weird I didn't dare drive it. I'm using the Edge Insight CTS to monitor.
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
And you're not getting any codes for EBP??
Cargo Master
Joined: May 2006
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From: Florida
Basically the MAP, EBP, and BARO are calibrated to read atmospheric pressure at KOEO which is ~ 14.4 at sea level. All 3 sensors should read within 1.5 psi of each other at KOEO. That's an easy test to see if you have a bad sensor, wire, connector, etc. Since your EBP is reading 0 at KOEO there is a problem there somewhere.
I thought it was 14.7 at sea level? Which is correlating with pure octanes stoichiometric ratio .
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
14.summtin--LOL. Regardless they should read within 1.5 psi of each other at KOEO
Posting Guru
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From: Francestown, NH
I have an Insight CTS too. I just went outside to my 2003. I live at about 950ft elevation in NH.
It has been plugged in but it's still a cold engine (104*) .... and I don't believe I have any driveability issues so here's what I got off my truck ...
KO/EO:
Boost - 0
Baro - 14.0
EBP - 0
Map PSI - 13 (no decimal place)
Crank the engine and let her low idle:
Boost - 0
Baro - 14.0
EBP - 2
Map PSI - 13/14 (bounces around between 14 and 13)
Run the rpm's up to 2,000 and try to hold for 3 - 4 seconds:
Boost - 2
Baro - 14.0
EBP - 4
Map PSI - 16
It has been plugged in but it's still a cold engine (104*) .... and I don't believe I have any driveability issues so here's what I got off my truck ...
KO/EO:
Boost - 0
Baro - 14.0
EBP - 0
Map PSI - 13 (no decimal place)
Crank the engine and let her low idle:
Boost - 0
Baro - 14.0
EBP - 2
Map PSI - 13/14 (bounces around between 14 and 13)
Run the rpm's up to 2,000 and try to hold for 3 - 4 seconds:
Boost - 2
Baro - 14.0
EBP - 4
Map PSI - 16