3F-E Help (1 Viewer)

Joined
Jan 9, 2018
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.
 
Joined
Dec 5, 2010
Messages
644
Location
Northeast PA
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.
 
Joined
Jan 9, 2018
Messages
3
Location
The Woodlands TX
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.
 
Joined
Jul 22, 2012
Messages
2,011
Location
Ann Arbor, MI
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
 

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