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Thread: What is this?
08-09-2010, 01:22 AM #1
What is this?
I'd appreciate anyone identifying this for me and telling me what it does. I was going to Seafoam the manifold by introducing it via the vacuum hose of the brake booster but saw this between the hard line from the TBI base and the port on the booster. I figured that I probably shouldn't pour the Seafoam thru it; at least until I knew what it was, what it did and whether the additive would harm it. This is an '89 R1500 5.7L disc/drum.
I looked at the vacuum routing sticker on the 'burb and at the routing schematic in the Chilton #28624 manual but didn't see anything or these old eyes missed it.
It's the small split case cylinder between the booster and the air cleaner.
Appreciate the help, Thanks.
Last edited by BluBurb89; 08-09-2010 at 02:05 AM.
1989 R1500 Silverado Suburban
5.7L, TBI w/ Dual remote oil filters,
16" 2010 CFM E-fan, K&N filter
TH700R w/ Aluminum pan, remote trans fluid filter and aux trans fluid cooler
Air shocks rear,
7x16 dual axle cargo trailer; 10K Reese HD trunnion bar WDS, dual friction sway dampeners
Cuz....I like to move it, move it....
08-09-2010, 01:35 AM #2
DUDE...that's your Flux Capacitor...Ensure that it's Fluxing...Ha Ha Ha...I wish I could help.."You underestimate my willingness to resort to violence to resolve this conflict" :fighting0037:
2006 Chevy Silverado 2500 HD LT
(8" Fabtech Suspension Lift, 3" Performance Accessories Body Lift, 37x13.50 Toyo MT's, 20" KMC Rockstar, K&N FIPK, Edelbrock Headers, Edelbrock Extreme Travel Shocks with Reservoir, MagnaFlow Dual Exhaust, Black Bear Performance Tune)
08-09-2010, 06:48 AM #3
- Join Date
- Aug 2010
- Whitehall, MI
looks like a pressure regulator/check valve of some sort. But I could be wrong.
08-09-2010, 08:58 AM #4
It's a check valve. It's what allows you to still have a couple pumps of power brakes even after your engine is off and drawing no vac.Patrick
08-09-2010, 09:34 AM #5
Thanks for the info; it is appreciated.