Engine/Transmission (1994 - 1998) Boost gauge never reads zero

[ikoch]

I installed a boost gauge the other day, and it never reads zero, even with the truck shut off. It always reads at least 2. 5 lbs of boost. As boost climbs it reads fine, just never goes to zero. I'm thinking that the hose could be kinked somewhere, but before I waste time checking it out I know someone on here will have the answer. I tried searching old posts, because that usually gives me an answer to every question, but I couldn't find it. Anyway, has anyone had this problem before? Could the gauge be bad? I don't remember if it zero'd before installation. I would probably go check it out right now, but it is raining.

 

[illflem]

Unless you're running an electronic gauge if it doesn't go to zero with the engine off the only thing it could be is a bad gauge

 

[ikoch]

Nope, Not electronic.

 

[24V-DSL]

My guage wouldn't settle at the pin, either... . read ~4psi.



Called mfg. , they sent a new one, no questions.

 

[Blakers]

My Isspro gauge started doing just what yours does. It would not rest on the peg and it measured about 4 psi higher than it should. I ordered another since it is still under warrantee (2 years) and was putting the new gauge in when the first gauge instantly went down to zero when I started working on it.



After some timkering, I found that the light bulb inside was hitting the boden tube (or whatever is in them) and was throwing the reading off. With a little manipulation of the wires, I was able to get the bulb to not interfere with the gauge and it works fine now.



Now I have a brand new gauge on the shelf.



Blake