Efisource 3 bar map (denmah) users
Efisource 3 bar map (denmah) users Hey guys just trying to fire my car up, it starts for 2-3 seconds and then dies..
I wired in the efisource 3 bar sensor and when I'm hooked up to hptuners scanner it reads 105kpa with engine off key on..
I tried deleting the stock map pid in scanner and using the 3 bar reading with the engine off and it's at 0kpa?
My tuner says it should read 99-101kpa before starting the engine and thinks this is why my car won't start up..
That and the scaling information is hard to find for it, I know it's similar to the gm 3 bar sensor from the 89 turbo trans am..
Also this is my first turbo car, I cut the pigtail off the stock map sensor and soldered in the pigtail that came with the 3 bar sensor.. Just want to make sure it's supposed to be ran off the same wires as the stocker
I've been calling my tuner multiple times today and don't want to keep bugging him with a million questions, I'm using a break in sd 3 bar tune by the way..
Anymore insight or other areas of concern as to why the car won't start?
I wired in the efisource 3 bar sensor and when I'm hooked up to hptuners scanner it reads 105kpa with engine off key on..
I tried deleting the stock map pid in scanner and using the 3 bar reading with the engine off and it's at 0kpa?
My tuner says it should read 99-101kpa before starting the engine and thinks this is why my car won't start up..
That and the scaling information is hard to find for it, I know it's similar to the gm 3 bar sensor from the 89 turbo trans am..
Also this is my first turbo car, I cut the pigtail off the stock map sensor and soldered in the pigtail that came with the 3 bar sensor.. Just want to make sure it's supposed to be ran off the same wires as the stocker
I've been calling my tuner multiple times today and don't want to keep bugging him with a million questions, I'm using a break in sd 3 bar tune by the way..
Anymore insight or other areas of concern as to why the car won't start?
Do you have an android phone? An app I like to use is "SyPressure". It's a free barometer app that provides current atmospheric pressure. This reading should be the same as what your getting with the KOEO. Here's a screen shot of the atmospheric pressure in Colorado right now.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
Do you have an android phone? An app I like to use is "SyPressure". It's a free barometer app that provides current atmospheric pressure. This reading should be the same as what your getting with the KOEO. Here's a screen shot of the atmospheric pressure in Colorado right now.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
I tried starting after disabling vats and it idled for a split second longer, also I checked DTC's on the last start up and it was the first time the maf codes were thrown.. All the other times I tried starting I never had a maf code...
It could possibly not be going into SD, I'm still learning. Forced learning curve right now lol
I tried data logging the very last start up since I've never done one and wanted to give it a shot..
I have a lc1 wideband plugged up to the hp interface and when I started the car it shot up to 11.2 afr before cutting off
But I don't know how accurate that is since the car didn't start?
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Should the mafs be failing and popping up in DTC's because out of the 6-7 times I tried to start it, the p0102,p0103 codes only popped up on the last try
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Does it seem like the fuel pump is running?
P0101, p0102, p0103 are all set to 1- mil on second error
Should they be 3- no error reported?
When i switched to 2bar SD my car did this exact thing on startup. Tuner put a base tune together so i could just idle the car but it would fire and die pretty quickly. I finally got the car to him and we could never get it figured out until we loaded a 100% stock file/OS for a 99. After we started working off that, things were fine. Really strange problem.
When i switched to 2bar SD my car did this exact thing on startup. Tuner put a base tune together so i could just idle the car but it would fire and die pretty quickly. I finally got the car to him and we could never get it figured out until we loaded a 100% stock file/OS for a 99. After we started working off that, things were fine. Really strange problem.
Oh also only one DTC is showing during startup,
P1637 - generator L terminal
I googled it and it shows maybe the alternator exciter wire? Would that cause this problem
P1637 - generator L terminal
I googled it and it shows maybe the alternator exciter wire? Would that cause this problem
Do you have an android phone? An app I like to use is "SyPressure". It's a free barometer app that provides current atmospheric pressure. This reading should be the same as what your getting with the KOEO. Here's a screen shot of the atmospheric pressure in Colorado right now.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
1 or 2 kpa difference won't hurt. If it's really off, adjust the map sensor scaling. Might have to use the offsets for the GM 3.3 map. But it sounds like the car isn't entering SD mode. How was the maf failed? It's normal for the Gen III pcm's to read 0 kpa with either the 2 or 3 bar pid. Only the 1 bar pid will read KOEO kpa.
Yes, although might not fix the problem. Car should run with no maf
See this makes me nervous that its same problem i had. Back when i first got the car, someone flashed a stock 01 OS onto my 99 saying it was faster/better (i just wanted my O2's turned off). Ever since we did that, the thing was a bitch to tune and it really showed its face when i went SD. When i remembered that and mentioned it to my current tuner, he reflashed everything back to the way it came from the factory and started clean. No problems since.
The alternator/generator code will not keep the car from running. I had that code as well after repinning mine. If you want to fix that, run a wire from RED connector, PIN 15 to the B pin on the alternator plug. Until I did this, my alternator wasn't even working.
Have you ran the car SINCE doing the re-pin? Like before you did all the turbo stuff?
Have you ran the car SINCE doing the re-pin? Like before you did all the turbo stuff?