Pelican Parts Forums

Pelican Parts Forums (http://forums.pelicanparts.com/)
-   Porsche 928 Technical Forum (http://forums.pelicanparts.com/porsche-928-technical-forum/)
-   -   Got it running with new timing belt.....but (http://forums.pelicanparts.com/porsche-928-technical-forum/528430-got-running-new-timing-belt-but.html)

harborman 02-26-2010 12:30 PM

Got it running with new timing belt.....but
 
I just fired it up and it started up fine but it threw off the airconditioner belt. Now I never had tried the air conditioner on this car. Also it appears I have no heat only cold outside air now. I did have to refill the anitfreeze because I replaced the water pump. The over flow is still a little over half full. It took quite awhile to fill. My main concern now is no heat inside the car. It usually kicks out heat pretty fast but it's 30 degrees here although the car was in my heated garage until I backed it out to run maybe 10 minutes. I had just cut the airconditioner belt off to run the car. The clutch turns free on the compressor however.

Well, I got the darn t-belt on and no leaks and it started up just fine.

Mrmerlin 02-26-2010 12:40 PM

with the coolant bottle cap off run the car with heater on full hot fan can be at position 2
and run the car till the radiator get hots and or the fan are cycling, replace the bottle cap and drive it for about 5 miles then let it cool off top up as necessary when the car is cold.
For the belt might you have bent the drive pulley?? or was the belt not tensioned correctly.
Make sure the vacuum line is connected to the HCV though it does fail open without vacuum

Landseer 02-26-2010 12:41 PM

Good job on the timing belt.

They'll idle a long time before heating up.

I'd be concerned about the AC belt. Are the pulleys all aligned when you eyeball it? The crank pulley is seated and has the right parts on it and behind it? They don't throw belts for no reason, you know that.

harborman 02-26-2010 03:16 PM

Quote:

Originally Posted by Landseer (Post 5207438)
Good job on the timing belt.

They'll idle a long time before heating up.

I'd be concerned about the AC belt. Are the pulleys all aligned when you eyeball it? The crank pulley is seated and has the right parts on it and behind it? They don't throw belts for no reason, you know that.

Thanks so much for your input. I will do as you say.

The AC was never run by me and maybe the system kicked it in and turned on the AC. Nothing was changed with respect to belts or pulleys. I tensioned them as per the manual, .4 inch play. I know I did not over tighten them. I figure the compressor might be frozen, but will investigate later. The pulleys went back on as came off, absolutely no change, I made sure of that.

harborman 02-26-2010 03:41 PM

Quote:

Originally Posted by Mrmerlin (Post 5207436)
with the coolant bottle cap off run the car with heater on full hot fan can be at position 2
and run the car till the radiator get hots and or the fan are cycling, replace the bottle cap and drive it for about 5 miles then let it cool off top up as necessary when the car is cold.
For the belt might you have bent the drive pulley?? or was the belt not tensioned correctly.
Make sure the vacuum line is connected to the HCV though it does fail open without vacuum

I will check this tomorrow. I think I had the belt tensioned correctly. I have a feeling the compressor might be frozen as I never turned on the air, winter here! I am not sure what happened, but controls were not moved. I did see the coolant went down some after my initial start up and run for maybe 7 or 8 minutes before I pulled it back in the garage. Nothing was changed with respect to pulleys and belts. The airconditioner on this car was not run for years from what I can tell, why it kicked in (my assumption) is a mystery at this time, as the pulley on the compressor turns free I did have the battery disconnected while doing the T-belt. I will top off coolant and see what happens. The car always brought up heat real fast. The heater hose did not appear too warm if that is the hose coming out of the manifold below radiator hose on the front. Maybe I am not having enough coolant in it yet.

Mrmerlin 02-26-2010 05:43 PM

following the directions i posted will result in filling the heater core.
Note drive the car with the heater on full hot
If there are other problems then you will have to investigate

Danglerb 02-26-2010 07:02 PM

When I bought my rebuilt AC compressor they told me to rotate the assembly a few times by hand before putting on a belt. I would see if it moves ok with the clutch engaged without a belt.

harborman 02-27-2010 03:56 AM

Quote:

Originally Posted by Mrmerlin (Post 5207884)
following the directions i posted will result in filling the heater core.
Note drive the car with the heater on full hot
If there are other problems then you will have to investigate

I am going to try this today, but maybe only have the car in the drive as we had more snow and there is salt and snow on the streets here. I did notice the coolant level went down in the fill bottle. It's at the half mark now.

I wonder if the car has an electric boost heater? Because it would put out heat very fast before the motor could get hot. I did smell something funny coming out of the vents yesterday, but no heat. I only ran it 7 or 8 minutes.

As to AC, I will check that out. I have a feeling the compressor is bad and froze up. The clutch is free and belt/pulley all the same as I took off. The AC pulley is right against the harmonic damper, last belt. I will have to energize the clutch and see if I can turn it by hand later. I never had the AC on, but it must have turned on by climate system or something.

harborman 02-27-2010 09:44 AM

Quote:

Originally Posted by Mrmerlin (Post 5207884)
following the directions i posted will result in filling the heater core.
Note drive the car with the heater on full hot
If there are other problems then you will have to investigate

Ok, the coolant seems to be fine and heating works as before. It really gives heat quickly.

I checked the AC compressor. It appears to be OK and I can turn it by hand with the clutch engaged, so I have some kind of belt issue with that AC compressor. The belt I cut off is worn on one side all along it's entire length at the top side of the belt like something was cutting into it. I am going to get another belt AVX13 x 1125 and relook at the situation.

MPDano 02-27-2010 10:11 AM

Quote:

Originally Posted by harborman (Post 5208786)
Ok, the coolant seems to be fine and heating works as before. It really gives heat quickly.

I checked the AC compressor. It appears to be OK and I can turn it by hand with the clutch engaged, so I have some kind of belt issue with that AC compressor. The belt I cut off is worn on one side all along it's entire length at the top side of the belt like something was cutting into it. I am going to get another belt AVX13 x 1125 and relook at the situation.

Sounds like it isn't aligned correctly. Did you eye your belts to make sure they looked straight before you started it up?

Mrmerlin 02-27-2010 10:17 AM

if the belts getting cut then you have to figure out why, its possible that you might have a wrong size belt on the airpump and this then puts it out of position so to cause the AC belt to touch or you have a ac belts either too big or small and then this causes the rubbing

harborman 02-27-2010 12:42 PM

Quote:

Originally Posted by Mrmerlin (Post 5208846)
if the belts getting cut then you have to figure out why, its possible that you might have a wrong size belt on the airpump and this then puts it out of position so to cause the AC belt to touch or you have a ac belts either too big or small and then this causes the rubbing

I bought a new belt and will unfortunately have to remove the first several to install the AC which is closest to the damper. Before I do, I will look over the situation and see what is causing the problem. That AC belt came off real fast when I first started the motor. Maybe I had it on wrong. It was working before and no belts were changed. I will give it a good eyeball like MPDano mentioned. At least for now, I have the major job done. I might try placing the old belt on just to see what might have happened. Since I cut the belt to get it off, I can try and place it back as nothing was changed. I obviously screwed up some where and need to really look very closely at this. Before I removed these the first time, I noticed the belt driving the air pump and fan was a little loose, I did make it tighter. Something got out of whack.

harborman 02-28-2010 12:54 PM

Update on the AC belt. I put a new one on and this time took a real hard look and made sure it was on correctly. What I might have done is test the tension on the lower part of the belt and with such a large pulley on the crank, the belt did not slip around and may have let it be slack on the top. This is all I can figure out, but it's fine now. The car is all back together, runs just great, now for some nice weather here.......well I have that new hood insulator to install next.......and then that $5,500 turbo boost kit.......just kidding.....don't need that......my hot rod, street racing days are long gone.....this car belongs at Road America, if I were to race that is, which I'm not!


All times are GMT -8. The time now is 01:21 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website


DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.