For YEARS my van would squeal upon startup, hot or cold, always.... I even upgraded the alternator to the aux capacity version, and put new premium belts on every time I took them off to fix something, including replacing the alternator once thinking that was the problem.

Come to find out (on another thread on here) that the higher capacity alternators have a heavy load even at low RPMs, so upon start up they are working super hard. The single belt (even though it's a new pulley and new belt...and sometimes even dual belt set ups) often isn't enough to keep the load from causing the belt squealing.

Once I read the thread on this, I went out and unplugged my alternator, and for the first time in 5+ years my van started without even a chirp.

Below is the plug (only two wires) going into the alternator, is there a simple solution to interrupting the alternator use? I was thinking to put a toggle switch on a long wire into the cab, so I could interrupt the wires to the alternator when I started up the van, and once I was on the highway I could flip the switch and the alternator would be "on" again... and the load on the alternator would be at higher RPM's and not slip, and even if it did a little, wouldn't wake my neighbors every time I started up the van.




oes this sound like a solution that would work, provided I don't mind dealing with the toggle switch?

 

I know I just read something about this problem and the solution had to do with something which delayed the alternator trying to charge at full capacity.
I just can't remember where. Most likely on one of the forums covering bumps, dents or slicks.

 

Do yourself a bigger favor and get rid of the 2g flamethrower. Those alternators do catch fire and are terrible units. Convert it to a 3g.

 

Really? I want the best most reliable altenator.... what should I get and from where, would you suggest? Here's a photo of the tag on the one I have now... it was an upgraded output from Napa. At this point I'm willing to go back to the original size one, but if there is a better one, please let me know...

Money is not an issue in this instance. Thanks!

 

Here this is the parts list, only thing you would source local is some 6ga wire and terminal ends. Some people use premade battery cables. Very easy swap, its a direct bolt in. Just need to make a few wiring connections. You also get a higher amp and way more stable alternator.

 

Painless also makes a kit but it's about 80.00 over priced. However their install guide is good.

 

I converted to a 130 amp 3g alternator. I used a Ford Taurus alternator. It bolted right in the oem bracket. I have a 75 f250. With a single V belt the squealing was terrible. I had to put on a 2 belt pulley. That resolved the issue. Other guys have converted to a serpentine belt system to fix the problem.

 

Unfortunately for the OP a Taurus alternator won't work. That's why I posted the special 3g that fits the 300. The offset ear is what makes it application specific.