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Vacuum Pump Install

Big T

Big T

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Alright, putting all the stock stuff back on for my biennial California Smog check on the '99 Suburban. I'm lost at putting the vacuum pump back on. Trying to line up how it would go on and I'm pulling a blank.

Do I need to pull the Alternator to install this?

Can someone post a picture of one installed?
 
WarWagon said:
Click to expand...

WarWagon, thank you for the effort to find this. Now I have to take a dramamine because I got seasick watching it. That has to be the worst video I've ever seen. I think the shot at 6:05 shows me what I need.

Went out and tried again. Hate to say it, but that video was worthless. I need a photo of the pump installed on the front of the engine.
 
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Some pics of the bracket on the pump. Also, found a diagram for install on the computer from the last go around. Wrapped up for the day as I was losing light. Possible rain tomorrow. Could screw me.
 

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Because it sucks up space and they do wear out.

I found an install diagram in PDF file. Could not upload it. Will revisit tomorrow. Last time this was easy, but the memory was fresh. Actually, we had the '95 wreck out back. I just went to look at the museum display and then did the install. So there were benefits to having that wreck lurking out back.
 
Yes, some people need to be doing other things aside of posting how to videos...

:vomit:Yeah that was B A D! :vomit:

I had hoped it would show you what you needed.
 
A Vaccuum Pump is 3 Bolts and it can't be installed any other way. Hook back up the VAC line you plugged and install the stock length belt.

VAC pump wouldn't wear out if there is no belt attached to it.
 
foreverfalcon40 said:
A Vaccuum Pump is 3 Bolts and it can't be installed any other way. Hook back up the VAC line you plugged and install the stock length belt.

VAC pump wouldn't wear out if there is no belt attached to it.
Click to expand...

The issues is installing the bracket that the vac pump mounts to. Looks like two studs on the engine plus 3 long bolts, two the same length, one a bit longer. Can't figure out where they go.
 
Seeing as the last smog test did not have the brightest bulbs performing the test, why not glue some vacuum hoses to the alternator, let them think it is a new fangled dual purpose device, and be done with it?
 
JayTheCPA said:
Seeing as the last smog test did not have the brightest bulbs performing the test, why not glue some vacuum hoses to the alternator, let them think it is a new fangled dual purpose device, and be done with it?
Click to expand...

The problem is, when in doubt, they send you to the Refereee. Once you're dealing with the referee, it's Napoleonic law where you're presumed guilty until proven otherwise. They got you and they make your life miserable. So I'm not taking any chances this time. I'm going to a different smog check place where the guy is more amenable and I'm not giving him any overt reasons to fail me. Remember, I still belch black on the snap test owing to my marine injectors and Heath tune.

I will take a closer look, but wondering if there's a difference between brackets for the "95 and the '99? The '95 has the a/c compressor over there on the passenger side, where as the '99 has the alternator over there.
 
Get with Leroy for a current ATT tune by KOJO that has fuel data curves from Slim. Only time I get smoke is briefly when I need to stomp on it (and had not hit it hard in a while). Smoke quickly clears up. When pulling hard up a grade, I have to look very closely to see any smoke, so it is likely in the 10% particulate range. Only reason I could see any smoke during the hard pull up a grade was that I sat in the passengers seat for a few climbs and had to look closely. From the driver's seat, I honestly thought it was smoke free.
 
JayTheCPA said:
Get with Leroy for a current ATT tune by KOJO that has fuel data curves from Slim. Only time I get smoke is briefly when I need to stomp on it (and had not hit it hard in a while). Smoke quickly clears up. When pulling hard up a grade, I have to look very closely to see any smoke, so it is likely in the 10% particulate range. Only reason I could see any smoke during the hard pull up a grade was that I sat in the passengers seat for a few climbs and had to look closely. From the driver's seat, I honestly thought it was smoke free.
Click to expand...

Jay, you're getting ahead of yourself. A new tune does not solve my current problem of how to reinstall the vacuum pump. The diagram was not helpful. Yes the pump only goes onto the bracket one way. The diagram I have shows the pump with bolts going into holes on the AC bracket. On mine the bolts come from the back of the bracket into threaded holes on the pump. I've tried to find a position for just the bracket to bolt onto and that was futile. I must be completely missing something here.
 
Big T said:
Jay, you're getting ahead of yourself. A new tune does not solve my current problem of how to reinstall the vacuum pump.
Click to expand...

Agree that a tune does not solve the question of the bracket. ;)

And at the same time am still seeing where this is related. If the end goal is to pass the smog test coming up on a month or so, consider going with a fuel curve that was developed from a motor that had an ATT. Am not aware that Heath did this (not bashing, just saying). I know with 100% confidence that KOJO's tune did. Point was to pass along the experience with KOJO's tune toward the goal of helping with the smog test.

Naturally, if the plan is to pull the ATT and put on a GM-X for the smog test, then nevermind. If the plan is to keep the ATT on the manifold, consider a tune that actually matches it. :)
 
JayTheCPA said:
Agree that a tune does not solve the question of the bracket. ;)

And at the same time am still seeing where this is related. If the end goal is to pass the smog test coming up on a month or so, consider going with a fuel curve that was developed from a motor that had an ATT. Am not aware that Heath did this (not bashing, just saying). I know with 100% confidence that KOJO's tune did. Point was to pass along the experience with KOJO's tune toward the goal of helping with the smog test.

Naturally, if the plan is to pull the ATT and put on a GM-X for the smog test, then nevermind. If the plan is to keep the ATT on the manifold, consider a tune that actually matches it. :)
Click to expand...

The KOJO ATT tune has been on the list. I'm dealing with a triage and passing smog is first. Then I need a set of German Bosch Injectors with standard nozzles built (currently has Bosch Marine Injectors). The Marine injectors definitely add to the smoke. Then I do the KOJO tune.

I got it back together. Vac pump goes on without the bracket. The vac line from the wastegate solenoid to the wastegate actuator melted and broke, so I'm not developing boost and rolling coal. Colby says he might have his vac lines still. If not, then O'Reilly carries them.
 
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