Adding Guages
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Elder User
Joined: Aug 2005
Posts: 572
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Adding Guages
I have a 94 f150 with the 300 and a 5 speed I was thinking of adding some after market guages like vac and air/fuel ratio, any thing else i should consider? also any recomdations on hooking up the air/ fuel ratio guage? thanks
Fleet Mechanic
Joined: Aug 2004
Posts: 1,276
Likes: 7
From: NE Tennessee
You get what you pay for with the a/f ratio guages. Most aren't very acurate. You want them about where the factory o2 sensor sits for decent readings.
Any particular reason your wanting the a/f guage? Not much use to em unless you do alot of changes to your rig. Such as supercharges or turbos.
Any particular reason your wanting the a/f guage? Not much use to em unless you do alot of changes to your rig. Such as supercharges or turbos.
Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
I wouldn't bother with an A/F gauge as it is more of a novelty than anything else. I think if I went to the trouble of aftermarket gauges, I would start with at least an oil pressure gauge and water temperature if you want two. These two things are more important things to monitor than A/F or vacuum. Vaccum is nice for monitoring relative throttle position for maximizing fuel economy, but it wouldn't be the first gauge I installed.
Senior User
Joined: Oct 2005
Posts: 285
Likes: 0
From: Sioux City, Iowa
The only air/fuel gauges that are any good are wideband ones, they tend to cost more. Also, mechanical gauges are always more accurate then electrical gauges.
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Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
Why spend money on an A/F gauge when you can't do anything to change the actual ratio? In my opinion is is kinda pointless on a stock engine with the stock computer.
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Postmaster
Joined: Aug 2004
Posts: 2,908
Likes: 2
From: West Mansfield, Ohio
Yea I agree with EPNSCU, theres not much you're going to do with an A/F Gauge. You already have one, its called your O2 Sensor. You're better off stickin with an oil pressure and or temp gauge, water temp, and maybe a tranny temp gauge. I have a water and tranny temp gauge in my truck i think once or twice I have been able to save the engine and tranny both from overheating. Thats what happens when you're pullin a 23 foot boat in 90 degree weather.
