Well, lately every Delco part I've bought either through the dealer or authorized Delco Distributor has gone bad within a few months. A Delco EVAP, a Delco Powersteering Pump that whinned immediatly, and now my Delco Water Pump has a very subtle droaning noise to it. Only 1.5 yrs old with 10k miles on that pump
I noticed a slight change in the engine sound/harmonics the other day(something no-one else could pickup) so I checked all accessories with a mechanics stethoscope and the water pump/bolts definitely are transmitting some harmonic noise. Not so much the pump housing because its probably isolated by the internal pump seal or somethng, and the block is silent where the bolts attach.
Someone once told me to see if the GM parts were still available when replacing any part as they are better than Delco like when my P.S. Pump failed. I think Delco P.S. Pumps are remaned anyway from Delco.
I'll have to check to see if they still make GM replacement pumps.
Does anyone remember seeing a post/thread about a guy who was discussing a different brand of a better quality water pump for a 4.9?
I thought it was here or maybe on the Fiero Forums. Can't remember but I think it was someone doing a 4.9 buidup and he named a water pump in his build/mod list and I had the the feeling that he was making a point that this other pump was better for some reason or rational.........................
So to add insult to injury, when the injectors were replaced, I decided to get a new Delco P.S. Pump to replace the original pump, and while everything was appart, why not replace the original GM Waterpump Too as the car has 89k ml.!
I also purchased a new Gates tensioner at that time but I didn't like the looks of it so it never was installed, but the original tensioner spring sprung this summer so the Gates went on after I called to inquier about the narrower body. Gate's confirmed that the tensioner has a better designed tension spring which is why its narrower. I'm now wondering if the original tensioner cause any stress on this pump which I also put on a new pump pulley due to an old issue.
I hate going by the old saying "if it ain't broke don't fix it" but it was the logical thing to do............
Anyone else having problems with AC Delco Water Pumps?