bholmes

Just completed the serpentine belt conversion! Car runs at 220 all the time with fan running all the time. Hose from heater core are hot, vs hoses from.radiator are cool to touch and as if no pressure on top hose! Any idea what could be my problem? Thermostat, water pump, or possibly belt routed wrong? Thermo and water were.bought new when I did the conversion! I k ow even though parts are new, can still be bad parts! My car is an 87 305, carb!!!
TIA

sofakingdom

iTrader: (1)

Sounds like maybe the wrong water pump. What WP is on it?

bholmes

I ordered one for a 1988! I'll have to chk the partnumber and let you all know

bholmes

The part number I ordered is: GATES 43114

sofakingdom

iTrader: (1)

What applications is it listed for?

bholmes

I double chk and it states "this part fits your car"! I'm gonna buy one from local parts store along with a thermostat

bholmes

Should I run the heater hose to the radiator instead of the waterpump like most serpentine set up are done! Just curious if that'd make a difference!

sofakingdom

iTrader: (1)

.

TransamGTA350

iTrader: (2)

Looking up the part number on RockAuto, Gates 43114 is listed for a 1988. 1987 has a different part number. So, the water pump you have should be correct for a serpentine setup.

Are you running the backside (smooth side) of the belt over the water pump pulley?

bholmes

I've chk the routing multiple times, and it's right! Maybe an air pocket. Imma get a new pump from parts store and a thermo!

Tom 400 CFI

An air pocket seems pretty unlikely....unless you simply didn't fill the system properly.

bholmes

Could someone send me the correct belt routing diagram. My car is an 87 305/carbed car. I converted to serpentine belts. I've found 2.different routing diagrams. Any help would.be greatly appreciated

TransamGTA350

iTrader: (2)

bholmes

That's exactly how I have it routed! Imma change pump, thermostat and radiator/cap and see if that solves my problem

bholmes

What yr is that motor? According to diagrams I found , 88,89, 90 is different from 91,92

TransamGTA350

iTrader: (2)

That is an 89’

Here’s a good thread discussing the different routings.

https://www.thirdgen.org/forums/tpi/...er-1992-a.html

Doesnt sound like that’s your issue though. Maybe the wrong water pump was in the package, or thermostat not working. Change both and go from there.

bholmes

I've got new parts ordered! Gonna try those and route belt different and go from there!