97 MAP sensor
Thread Starter
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
97 MAP sensor
I've been seeing some intermittent strange behavior (bogging to <400 rpm, and is basically unsurvivable) accompanied sometimes by the a MAF code (I think 102) and P0106 (although both are quite "rare" -- maybe once a day). Tonight went out to do some work on my VE table, so I disabled the MAF -- the car keeps switching into limp mode, despite maxing the anticipated airflow table.
Finally, with that table maxed, it limped again, but this time threw P0106 again. I'm starting to think my MAP sensor might have a short or something.
The engine is hot, so I can't pull the map and look. Does anyone know if I can use this:
It's a GM 1 bar map from my 03 truck (which is now 2 bar SD). The part number in that wonderful picture is 09359409
Finally, with that table maxed, it limped again, but this time threw P0106 again. I'm starting to think my MAP sensor might have a short or something.
The engine is hot, so I can't pull the map and look. Does anyone know if I can use this:
It's a GM 1 bar map from my 03 truck (which is now 2 bar SD). The part number in that wonderful picture is 09359409
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
1. Maxing the predicted airflow table rarely works in regards to throwing the P1514 when in SD.
If it's n/a, I may be able to send you a table that will work.
If it's for boost, you may have to scale down both VE and IFR tables (by an equal %) to keep it happy.
2. As best I can tell, P0106 does not exist on the 97 PCM OS. Have you upgraded to a newer PCM or OS?
3. List all your engine (and PCM) mods, and what tuning software you are using.
If it's n/a, I may be able to send you a table that will work.
If it's for boost, you may have to scale down both VE and IFR tables (by an equal %) to keep it happy.
2. As best I can tell, P0106 does not exist on the 97 PCM OS. Have you upgraded to a newer PCM or OS?
3. List all your engine (and PCM) mods, and what tuning software you are using.
Thread Starter
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
Oops 
Yeah, I'm running an 02 PCM. It's an LSX 427 with: ARH 1 7/8 LTs, LS6 intake and TB, Edelbrock 245cc heads -- and is completely NA.
I'm using EFI Live, but I believe the MAP sensor is the culprit since it is intermittently tripping even with the MAF (and then trips the maf code). I initially started with a 40% bump to the PAT (instant 1514), then went 20% more, then went to a global 1400 (which is what I run in my TT truck for SD), and then just maxed it. With it maxed it ran until it tripped the MAP code.
Yeah, I'm running an 02 PCM. It's an LSX 427 with: ARH 1 7/8 LTs, LS6 intake and TB, Edelbrock 245cc heads -- and is completely NA.
I'm using EFI Live, but I believe the MAP sensor is the culprit since it is intermittently tripping even with the MAF (and then trips the maf code). I initially started with a 40% bump to the PAT (instant 1514), then went 20% more, then went to a global 1400 (which is what I run in my TT truck for SD), and then just maxed it. With it maxed it ran until it tripped the MAP code.
Thread Starter
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
I should also mention that my tune started with an 02 base vet tune, and then I swapped in all the relevant stock 02 Z06 tables (maf, spark, throttle, idle, ve) and have been tuning idle from there.
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
I think both are symptoms of the bogging, not causes of the bogging.
The P0106 is a common code for 02/newer owners who install a sizable cam, where exceeding predicted Kpa at idle is rather common.
Look at table C3003 "Predicted MAP max" , highlight the whole table, up it 30%. This should cure the P01016. It won't make the car run any better, but it should cure the MAP code. (this is just a diagnostic "sanity check" table).
_________
As for the P1514, and REP mode....give this table a try. Highlight everything in the code box below, rt click, copy, then highlight your entire C6101 ETC Predicted Airflow table, and paste with labels.
It's an odd looking table that doesn't exceed 900 mg/cylinder anywhere, but it's worked for me and others where maxing the 4095 mg/cyl table limit did not.
Don't ask me WHY it works...it just tells me there is more to this table than what we are led to believe as far as simply exceeding some value..
Report back how it goes.
The P0106 is a common code for 02/newer owners who install a sizable cam, where exceeding predicted Kpa at idle is rather common.
Look at table C3003 "Predicted MAP max" , highlight the whole table, up it 30%. This should cure the P01016. It won't make the car run any better, but it should cure the MAP code. (this is just a diagnostic "sanity check" table).
_________
As for the P1514, and REP mode....give this table a try. Highlight everything in the code box below, rt click, copy, then highlight your entire C6101 ETC Predicted Airflow table, and paste with labels.
Code:
LABELS RPM {link: SAE.RPM}
Throttle Opening % {link: SAE.TP} 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000
0.0 600.000000 132.000000 75.000000 54.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000 45.000000
6.3 600.000000 282.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000 180.000000
12.5 600.000000 450.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 350.000000 200.000000 200.000000
18.8 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 400.000000 400.000000
25.0 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
31.3 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
37.5 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
43.8 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
50.0 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
56.3 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
62.5 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
68.8 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
75.0 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
81.3 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
87.5 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
93.8 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
100.0 600.000000 600.000000 600.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 900.000000 450.000000 400.000000
Don't ask me WHY it works...it just tells me there is more to this table than what we are led to believe as far as simply exceeding some value..
Report back how it goes.
Last edited by Y2Kvert4me; Sep 3, 2009 at 09:29 PM.
Thread Starter
Burning Brakes
Joined: Apr 2009
Posts: 946
Likes: 2
C3003 is a winner -- I ended up somehow leaving this table totally stock (base 2002 vette tune) rather than my normal "big cam" bumps. This has cured (so far at least) the intermittent idle bogs while not moving and has so far erased P0106 from my trouble list.
I used your C6101, but still got the 1514 code. Then, since a lot of your table at idle was lower than the table I was using (stock Z06) I bumped your table by 40% and no more code
AutoVE'd my idle cells up to between 500 and 2000rpm Yes, the car idles at 500rpm lol -- just sounds like doo.
I used your C6101, but still got the 1514 code. Then, since a lot of your table at idle was lower than the table I was using (stock Z06) I bumped your table by 40% and no more code
AutoVE'd my idle cells up to between 500 and 2000rpm
Yes, the car idles at 500rpm lol -- just sounds like doo.
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Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Cool deal.
I was not sure if the C6101 would work for your 427, but that table did the trick for both mine, and a friends heads/cammed 346.
At least it sounds like you got it fixed...REP is the most annoying thing, and much worse when you have a huge cam that barely idles when firing on all 8 cyls.
I was not sure if the C6101 would work for your 427, but that table did the trick for both mine, and a friends heads/cammed 346.
At least it sounds like you got it fixed...REP is the most annoying thing, and much worse when you have a huge cam that barely idles when firing on all 8 cyls.
