265 Hemi to efi

[Charlescrown]

It tells me the MAP is fine. A 3 bar MAP sensor whould be putting out 1/3rd of the 5 volts KOEO @ atmospheric pressure which is around 1.6 volts (a std MAP sensor would put out the 5 volts). The supply voltage and earth's are good. Now you need to see what voltage you get at terminal C11 of the ECU under the same conditions backprobe C11. Everything connected with the key turned on and it should be the 1.6 volts. A small variation is OK.
Why the MAP reading stays static is strange. Perhaps before getting too involved with electricals if you have a hand vacuum/pressure pump make a log with KOEO and apply and release vacuum then pressure up to 2bar above atmospheric pressure to the map sensor. If all is OK it should show in the log.

[heff0018]

It tells me the MAP is fine. A 3 bar MAP sensor whould be putting out 1/3rd of the 5 volts KOEO @ atmospheric pressure which is around 1.6 volts (a std MAP sensor would put out the 5 volts). The supply voltage and earth's are good. Now you need to see what voltage you get at terminal C11 of the ECU under the same conditions backprobe C11. Everything connected with the key turned on and it should be the 1.6 volts. A small variation is OK.
Why the MAP reading stays static is strange. Perhaps before getting too involved with electricals if you have a hand vacuum/pressure pump make a log with KOEO and apply and release vacuum then pressure up to 2bar above atmospheric pressure to the map sensor. If all is OK it should show in the log.

Great thanks Charles, I know I have a vacuum pump with gauge so should be able to do that. WIll check C11 also.

[Holden202T]

the map voltage in the list view shows it at 4.67v almost the whole time

[heff0018]

the map voltage in the list view shows it at 4.67v almost the whole time

Thanks definitely need to get that sorted.

[heff0018]

Just on viewing the log files, is there a plug in or something I would need to setup on my spare laptop tunerpro setup to view them. Thanks

[Holden202T]

all you need to do is in the aquisition menu, goto load definition file, this is the OSE $12P adx file to suit your version etc

then in the same menu further down is the option to load log file, this will be where you'd load a saved log.

alstermatively if you have all the com port settings right you can click the two blue arrows on the menu bar to connect to the car, and then down the bottom it should say its connected and then you can use the gauge screen, or the list view / histogram views to see all the different data.

[Charlescrown]

Hey Holden202T can you plese tell me if I'm using the correct ADX. It's the lowest one on this list. The reason is I can't see mAP voltage but can only see MAP which is stuck on 9.52 which if that's supposed to be the MAP reading insanely low (impossible) and scaled MAP which is stuck on 98.18 which by the ADX is supposed to be volts another insane figure. I'm not sure just what that really is. Also if I scroll down the data list it shows a code 34 MAP voltage low which would correspond with the MAP reding of 9.52 but when heff put it into diagnostic mode got code 12. Just wan't to clear up any incorrect info I might be passing on to heff.

[heff0018]

all you need to do is in the aquisition menu, goto load definition file, this is the OSE $12P adx file to suit your version etc

then in the same menu further down is the option to load log file, this will be where you'd load a saved log.

alternatively if you have all the com port settings right you can click the two blue arrows on the menu bar to connect to the car, and then down the bottom it should say its connected and then you can use the gauge screen, or the list view / histogram views to see all the different data.

Thanks mate, got it working and what a difference that info makes.

[heff0018]

Hey Holden202T can you plese tell me if I'm using the correct ADX. It's the lowest one on this list. The reason is I can't see mAP voltage but can only see MAP which is stuck on 9.52 which if that's supposed to be the MAP reading insanely low (impossible) and scaled MAP which is stuck on 98.18 which by the ADX is supposed to be volts another insane figure. I'm not sure just what that really is. Also if I scroll down the data list it shows a code 34 MAP voltage low which would correspond with the MAP reding of 9.52 but when heff put it into diagnostic mode got code 12. Just wan't to clear up any incorrect info I might be passing on to heff.

I'm getting the same results on that same ADX.

[heff0018]

I checked the log when it was running on the NVRAM back on 27/1 and can see that the MAP doesn't move from 9.52.

Also see that 4cyl Memcal is detected and MAP Signal Low set.

Screenshot 2025-02-04 193816.png (14.35 KiB) Viewed 1520 times

Screenshot 2025-02-04 194201.png (13.76 KiB) Viewed 1520 times

Lots of problems to deal with.