What's this ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Nvbowtie · 08-26-2003, 02:37 AM

What & Where does it go,

I am assuming its part of the A/C or Cruise control ???

gchemist · 08-26-2003, 02:54 AM

It's not part of the cruise control unless GM changed the wiring in the newer trucks. My 83 cruise should go back to the late 70's. I'm not sure on the A/C. The compressor should have a different connection unless the older compressors used a different type. Where does the wire lead from? Is it live? How many volts going through it? Looks more like a washer bottle connection.

Nvbowtie · 08-26-2003, 05:15 AM

I dont have a wire on my washer bottle, at least that I know of ?

gldevall · 08-26-2003, 08:22 AM

It looks like it may have gone into the stock carburator.

Nvbowtie · 08-26-2003, 09:38 PM

then whats the thing with the small vacuum port (large arrow is pointing at) it appears to be split from that same green wire ??

phantom dually · 08-26-2003, 09:40 PM

The thing you are pointing to is a MAP sensor. Pull it out a chuck it!!!

Nvbowtie · 08-26-2003, 09:44 PM

Oh Yeah !!

I like doing that !!, I was gonna say what ever it is, I didn't need it to run the other day !!

Where does the map sensor end up going to ? Cab/firewall ?

>>>>>>>>>>>> Edit:

I don't see any listing for a MAP sensor for my year model truck ?????????

phantom dually · 08-26-2003, 10:51 PM

My 83 had a computer of some sort in the pass floor panel or maybe in the dash. I took it all out. Trace it down and cut it out. You wont need it with a carb that you are runnning.

phantom dually · 08-26-2003, 10:53 PM

Btw the way the nipple left over had a hose on it that went to the carb to sense WOT. MAP stands for M______ A- absolute P-pressue. Forgot what M is sorry!!!

**swervin ervin** · 08-26-2003, 11:29 PM

The thing the yellow arrow is pointing to is not a MAP sensor. It's the low vac switch for converter lockup.

Nvbowtie · 08-27-2003, 03:23 AM

Swervin -

Mike

I have a vac line running from the manifold to the tranny modulator/

Is this low vac switch for converter lockup -

- a seperate source that is needed also ?

**swervin ervin** · 08-27-2003, 06:35 AM

If your tranny is a TH350C, yes, it's needed in order for the converter to lockup. If it's just the plain TH350, then no, it's not needed.

87 STEPPER · 08-27-2003, 09:55 AM

Quote:

Originally posted by phantom dually
MAP stands for M______ A- absolute P-pressue. Forgot what M is sorry!!!

M= Manifold as in the (Intake Manifold).

Nvbowtie · 08-27-2003, 09:23 PM

Quote:

Originally posted by swervin ervin
If your tranny is a TH350C, yes, it's needed in order for the converter to lockup. If it's just the plain TH350, then no, it's not needed.

I'ts the C model, Why do I always get the weird stuff....

08-26-2003, 02:37 AM	#1
Nvbowtie Registered User Join Date: Jul 2001 Location: Laughlin, Nv. USA Posts: 700	What's this ?? What & Where does it go, I am assuming its part of the A/C or Cruise control ??? Attached Images __________________ www.unlimited2u.com/chevy Bill 1980 Chevy C-10 Silverado 1988 Chevy Blazer Tahoe

08-26-2003, 02:54 AM	#2
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	It's not part of the cruise control unless GM changed the wiring in the newer trucks. My 83 cruise should go back to the late 70's. I'm not sure on the A/C. The compressor should have a different connection unless the older compressors used a different type. Where does the wire lead from? Is it live? How many volts going through it? Looks more like a washer bottle connection. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

08-26-2003, 05:15 AM	#3
Nvbowtie Registered User Join Date: Jul 2001 Location: Laughlin, Nv. USA Posts: 700	I dont have a wire on my washer bottle, at least that I know of ? Attached Images __________________ www.unlimited2u.com/chevy Bill 1980 Chevy C-10 Silverado 1988 Chevy Blazer Tahoe

08-26-2003, 08:22 AM	#4
gldevall Registered User Join Date: Mar 2003 Location: Walker, LA Posts: 2,925	It looks like it may have gone into the stock carburator. __________________ Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels

08-26-2003, 09:38 PM	#5
Nvbowtie Registered User Join Date: Jul 2001 Location: Laughlin, Nv. USA Posts: 700	then whats the thing with the small vacuum port (large arrow is pointing at) it appears to be split from that same green wire ?? __________________ www.unlimited2u.com/chevy Bill 1980 Chevy C-10 Silverado 1988 Chevy Blazer Tahoe

08-26-2003, 09:40 PM	#6
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,792	The thing you are pointing to is a MAP sensor. Pull it out a chuck it!!! __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

08-26-2003, 09:44 PM	#7
Nvbowtie Registered User Join Date: Jul 2001 Location: Laughlin, Nv. USA Posts: 700	Oh Yeah !! I like doing that !!, I was gonna say what ever it is, I didn't need it to run the other day !! Where does the map sensor end up going to ? Cab/firewall ? >>>>>>>>>>>> Edit: I don't see any listing for a MAP sensor for my year model truck ????????? __________________ www.unlimited2u.com/chevy Bill 1980 Chevy C-10 Silverado 1988 Chevy Blazer Tahoe Last edited by Nvbowtie; 08-26-2003 at 09:52 PM.

08-26-2003, 10:51 PM	#8
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,792	My 83 had a computer of some sort in the pass floor panel or maybe in the dash. I took it all out. Trace it down and cut it out. You wont need it with a carb that you are runnning. __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

08-26-2003, 10:53 PM	#9
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,792	Btw the way the nipple left over had a hose on it that went to the carb to sense WOT. MAP stands for M______ A- absolute P-pressue. Forgot what M is sorry!!! __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

08-26-2003, 11:29 PM	#10
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	The thing the yellow arrow is pointing to is not a MAP sensor. It's the low vac switch for converter lockup. __________________ Mike 1985 Chevy C-10

08-27-2003, 03:23 AM	#11
Nvbowtie Registered User Join Date: Jul 2001 Location: Laughlin, Nv. USA Posts: 700	Swervin - Mike I have a vac line running from the manifold to the tranny modulator/ Is this low vac switch for converter lockup - - a seperate source that is needed also ? __________________ www.unlimited2u.com/chevy Bill 1980 Chevy C-10 Silverado 1988 Chevy Blazer Tahoe

08-27-2003, 06:35 AM	#12
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	If your tranny is a TH350C, yes, it's needed in order for the converter to lockup. If it's just the plain TH350, then no, it's not needed.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.