Highest boost ever in a C5 - Pic inside
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
Highest boost ever in a C5 - Pic inside
Actually the gauge is being really weird and even did a loop for no strange reason.
Now it's reading closer to normal, maybe 4# to high on vac and boost. The car feels just fine and still pulls like a train no matter what the gauge says.
So what's the deal? Could it be a connection under the hood or am I in the market for another gauge?
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
I'm assuming it's an electric with a sending unit. Could be ground or your reference wire. Check it with a meter and check wiring where it could be compromised then consider replacing the sending unit. If you can get it to act up while you have a meter on it, then you'll know whether or not it's the sending unit.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Sounds and looks to be a whacky sending unit!
I'd monitor it and contact the gauge company and see what they suggest too
!
Might just need a new sender and they just might send you one
Thanks,Matt
I'd monitor it and contact the gauge company and see what they suggest too
!Might just need a new sender and they just might send you one
Thanks,Matt
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
Ive had a few autometer boost guages go bad on me, they were all mechiacal. But I also had a autometer electric fuel pressure guage read way wrong, I checked the sending unit with another guage and the sending unit was still good.
Le Mans Master
Joined: Aug 2005
Posts: 7,890
Likes: 0
From: FL
I have the exact gauge configuration. Having the same problem as you with the boost gauge at the moment. Let me guess it lights up fine but wont read accurately? Mines stuck on 14 vacuum. If you can wait till the end of next week I'll know for sure but I'm pretty sure you'll have to send your gauge in to autometer to be fixed or replaced. There is no sending unit on this gauge as others suggested it's a MAP sensor. I repleced the map sensor with a new from autometer with no change and waiting to get the gauge back. Oh and my FP at idle is like yours with KB BAP, racetronix pump/harness, 60lb inj.
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Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
The gauge is electronic, but as previously mentioned it should read off the MAP. I'm not sure if there is a sending unit...
It's not stuck in one place either. It moves the correct directions for boost/vac, but in odd parts of the gauge.
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
Thread Starter
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
