New issue, and now aboute Q45 MAF no signal.

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Meguiars
Helpful MS/Extra'er
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Joined: Tue Jul 22, 2014 11:32 am

New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

Hi again, i have a problem to get signal to my added Q45 MAF, the V-return is connected to JS5. i have connected them right according to drawins and pictures. but nothing comes up in tunerstudio, if i try to switch from Map to Maf the car dies, just to be clear, the options on the menu lines are greyed out.

here is the .msq
Matt Cramer
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Re: New issue, and now aboute Q45 MAF no signal.

Post by Matt Cramer »

Looks like the MSQ didn't post, but what voltage are you seeing on the MAF's output?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Meguiars
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Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

Hi i trying to add the .msq and some log files i took yesterday.

The MAF voltage output is .403
today.48.msq
2014-07-26_16.49.51.csv
2014-07-26_17.34.08.csv
Meguiars
Helpful MS/Extra'er
Posts: 88
Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

here is some more logs

2014-07-26_17.20.16.csv
2014-07-26_17.19.48.csv
Matt Cramer
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Re: New issue, and now aboute Q45 MAF no signal.

Post by Matt Cramer »

Is the MAF voltage stuck at 0.403 volts, or does it go up when you rev the engine.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Meguiars
Helpful MS/Extra'er
Posts: 88
Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

Thanx for the reply, is the ms2extra v.3.57 ready for MAF? Or do i have to solder in 1K resistor and the uF22 ceramic capasitor. i have the uf22 but only 10k and 330ohm resistor laying around.

Im wondering because i was told that i had to buy boost mod-kit, but that wasnt really nescessary since it already was on the unit.

Stupid is stupid does, thats me.

Thanx.
jsmcortina
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Re: New issue, and now aboute Q45 MAF no signal.

Post by jsmcortina »

Have you read the MAF wiring section in the MS2V357 hardware manual ?

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
Meguiars
Helpful MS/Extra'er
Posts: 88
Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

Hi, yes i have. im going to fix it tomorrow, but now i got a new issue. i went out to my garage today to start up the car but it didnt wont to start. I checked the fuses and the one to the coil was blown. i replaced it and it blew right up when i put the ignition ON. I disconnected the IGN-6 from DIY and it didnt blow up. So i checked the wires and its all ok (i think) will check more tomorrow, but i opened the ms-case and when i put on the ignition without coilpack connected only D15 and D16 LED was lighted up but not D14 thats Spark A if i dont remember wrong. should all of the leds be red when ign is on? Or will it only go on when cranking the engine.

I brought the whole box to work and asked a college of mine to check it, he is an electrician, im not and he couldn find anything wrong. Another thing is that i cant connect to to tunerstudio after this either.

Any ideas, i will try to see if i connect the computer with JimSteam tommorrow also.

Any good ideas how to check the coilpack for short circuit? The car was running fine yesterday.

Thanx
jsmcortina
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Re: New issue, and now aboute Q45 MAF no signal.

Post by jsmcortina »

Meguiars wrote: i cant connect to to tunerstudio after this either.
You need to sort that out as a first step.

James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
Meguiars
Helpful MS/Extra'er
Posts: 88
Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

you guys are really fast on the replyes, i like it ALOT.

Can it be a shortcut in the box that makes it impossebly to connect?

I will give it a try again tomorrow, if not. where can i send the box for repair, or should i buy a new ms3pro, im getting tired of this now takes to much energy and time.

Sorry for my lack of confidence and fed-up attitude.

:roll:
Matt Cramer
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Posts: 17499
Joined: Thu Apr 16, 2009 8:08 pm

Re: New issue, and now aboute Q45 MAF no signal.

Post by Matt Cramer »

There are several things to check with the connection.

First, check to be sure you have voltage on VREF. No voltage there can be either an internal or external short, but it will kill the connection.

If you have VREF but no connection, try running the Port Check program:

http://www.diyautotune.com/downloads/tu ... tCheck.zip

Then post a screen shot of the results you get.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Meguiars
Helpful MS/Extra'er
Posts: 88
Joined: Tue Jul 22, 2014 11:32 am

Re: New issue, and now aboute Q45 MAF no signal.

Post by Meguiars »

Hi Matt, ive just sent you an email on websales@diy......
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