Make & model that used 3 bar MAP?

[Dan_Austin]

Just had an 8 month old 3 bar MAP fail. I was only a mile from home, and being a pack rat, I was sure I knew where I had saved the original. After walking home and back to to the truck a quick swap confirmed it was the MAP that failed. Ordering a replacement while the truck is in the garage is easy enough, but it got me thinking it would be good to be able to go to the parts counter and ask for one based on a known donor vehicle. I could just order 2 and keep a spare in the truck, but I am hoping I do not need to go that far...

 

[Slyclone]

I bought a Delphi brand one it seems ok. Had inaccurate reading on my gauge, replaced it.

I don't have the part number on hand but I saved the box like a pack rat.

 

[Dan_Austin]

The dead one was from SportsMachine, Racetronix which I assume is just a rebadge. Electronics sometimes just die, so I am not upset or thinking I got a dud. I have ordered a couple off Amazon, mostly for the speed of shipping. But I realized that if I had been 150 miles from home and not a mile, Amazon would do me no good...

 

[Slyclone]

Wow I'm surprised.

When I sourced mine- when I had inaccurate readings on my gauge I pulled the part number from racetronix. That's where I got the Delphi number. It was 70 or 80 dollars through them, plus a bit of a wait for it to arrive. I think I landed mine for around 30.. hasn't been a issue yet.

 

[powercat6]

As far as I know the only GM vehicle that ever used a 3 Bar MAP was the 1989 Pontiac Trans Am Turbo 20th Anniversary with the Turbo 3.8.

From: https://internationalsytyregistry.com/syty-part-numbers/#1461182945316-d3f6a6f7-c847

Old 3 Bar: GM #16040749
New 3 Bar: GM #12223861

AC Delco 213-1562 If you check one of the pictures you will see 12223861 on the part.
https://www.autozone.com/engine-management/map-sensor/p/acdelco-map-sensor-213-1562/7205_0_0

 

[gmemony2]

My old Delphi has this part # I wrote on it.

#12223861

 

[DaveP's Ghost]

But I realized that if I had been 150 miles from home and not a mile, .............

The engine stays running with the MAP disconnected. The ECM uses a fixed calibration from the CALPACK. The engine should run and be driveable with the MAP disconnected. It won't drive well, but it will move. Beats walking.

I just went out and confirmed this on my stock calibration 93.

 

[Dan_Austin]

I have a MS3 based stand-alone, and it may be able to be programmed into a limp mode, need to check that. I had most of the part numbers, I just wanted to be ready for the parts counter 'tech' that can only find parts based on year/make/model...

 

[MotoCam360]

The engine stays running with the MAP disconnected. The ECM uses a fixed calibration from the CALPACK. The engine should run and be driveable with the MAP disconnected. It won't drive well, but it will move. Beats walking.

I just went out and confirmed this on my stock calibration 93.

He runs our plug n play ecu in his truck

 

[Dan_Austin]

And there is a limp mode in the Motocam. I have validated that the MAP failed and is now reading a consistent 270 kPA. I have adjusted the limp mode to detect this and allows the truck to run using a guestimated MAP table (RPMvTPS). I do not want to depend on a failure being 90% of max reading, so I am testing some other options to spot a failed MAP and will likely adjust the VE table to have super low values in the high kPA/low RPM cells to allow the truck to start and stay running long enough to go into limp mode...