3F-E Help (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Jan 9, 2018
Threads
1
Messages
3
Location
The Woodlands TX
This weekend I replaced the temperature sending unit in my 1992 FJ80 and to make it easier I removed the belt that runs the smog pump and power steering. After putting everything back together and tightening the belt down I went to start it and it created an extremely loud hissing noise that seems to come from the driver side of the engine compartment. At first I thought it was the smog pump with a bad connection to a line since I did move it but I didn't feel or see any leaks coming from it and I'm now lost as to what it is.
 
Does it do it every time you start it?

If it's a once and done issue, and the truck is running ok I would ignore it.

I've become accustomed to unusual one time occurrences with my 3fe.
 
Does it do it every time you start it?

If it's a once and done issue, and the truck is running ok I would ignore it.

I've become accustomed to unusual one time occurrences with my 3fe.
Yes it happens every time it starts and runs and doesn't stop until the engine is off, also the pitch of the sound seems to be based on RPM. The engine still runs perfectly fine but the noise is nearly deafening from outside the truck.
 
Look for a cracked or broken vacuum line in the area you were working on it.
 
You might have a leak in the hose from the smog pump. or something like that. I'd go through all the hoses and make sure they are connected
 

Users who are viewing this thread

Back
Top Bottom