Zeus-of-Boost

i have seen on many threads and post that the partnumber for a ss cobalt 2 bar map sensor is GM 12615136 . So that's the one i bought and installed on my car. Now my car will barley stay idled up and when i give it gas it cuts off.

REMEMBER this is a new build and today was the first time its been cranked ever.

The tuner said that i might have gotten the wrong map sensor. Can anybody CONFIRM ( from your own experience) that i have the right one.

I have done some research and found that GM 12615136 replaced GM PN 12580698.

4DRUSH

Not sure about the numbers, but I read a simple way to tell is:

1 bar has 1 line of numbers

2 bar has 2 lines of numbers

3 bar has 3 lines of numbers

etc, etc

Chris Stewart

Absolutely yes 12615136 is 2 bar. I had that and ran it last year, maxed out at 207kpa. Here it is next to the stock 1 bar and also a 3.3bar I tried but ended up not using. (It's for sale) Now I use the old style 3bar.

Zeus-of-Boost

Thanks guys, guess I have the right map then. I have the one in the middle

4DRUSH

Well I guess that theory was fck'ed up.

Chris Stewart

lol

Zeus-of-Boost

Lol ya, wish it was that easy to difference. Thanks for the effort to help out tho.

DSteck

If your tuner doesn't change the calibration for the sensor, then it's going to run like crap. For C5s, you need a custom OS to use a 2 bar sensor.

madmatt9471

I was wondering:

(1)Did you just plug it in?
(2) Did you have the tune modified for the 2 BAR SD MAP sensor and now it still wont run?

It's not like it is plug-n-play for going from 1 BAR to 2 BAR or 3 BAR - must be tuned in the PCM by a tuner.

Thanks,Matt

Zeus-of-Boost

I gave tr tuner all my info. I have a lot of confidence jn my tunner. He tuneall the good shops around here. He's coming out this weekend to hook it up to his scanner and see what's going on

Zeus-of-Boost

Ya Matt, I plugged the 2bar map in and removed my PCM and took it to my tuner. Then he said he tuned it to a 2bar sd tune.

I noticed last night that I had some codes so I deleted them all out. I will try to crank I again tonight and see what codes reappear. That might give me some insight of what's not right. I'm also going to go though and double check all my vacuums for leaks.

Milan

Tuner probably has wrong injector data in there, or the airflow tables aren't set up properly. He knows what motor and cam you have right?

Zeus-of-Boost

Ya I sent him the cam card and a run down Of the motor. I think its the injectors that he has off.

DSteck

Get me a copy of the tune along with a breakdown of all the parts you have. I'll tell you if something is set up wrong.

Zeus-of-Boost

Thanks man i really appriciate it . My tuner is going to to come over and hook up a scanner to it and see what's up with it. Let me ask you this tho. Is it possible that my vortech mondo valve is set to tight. ? If it's not set right, it might be pushing air when it's not supposed to which in turn, would mess my idel up .

Milan

My A&A BOV got seized shut and I was able to make it from Denver all the way to Houston like that with no problems, it's not the BOV.

Zeus-of-Boost

Must be a tune issue then. Thanks Milan, Ur advice is always appreciated.