hooking up a vacuum gage

Has anyone hooked up a vacuum gage to their Tacoma for observing while driving? If so where do you plug it into? Is there a map sensor to plug it to like other vehicles? The vacuum gage I hooked up on my Geo Metro really helped me get better mpgs while driving.

 

Back in the carbureted days, I used a vacuum gauge on a Ford Pinto I owned. Had an elaborate how-to diagnostic sheet...telling me how to tell what was going on by the gauge. If the needle wobbled at idle, more than it had...a valve spring was going. If the needle fluctuated at highway speeds with a steady foot...there was obstruction in the exhaust. And of course, feathering the throttle gave better gas mileage. And since a small car like the Pinto in those days used about as much gas as a 2wd Tacoma...you needed all the help you could get, when you were out of work and broke and having to beg a few bucks for every fill-up.

Today, I don't know what a vacuum gauge would tell you. Between the VVT valves and fuel injection...I don't know that keeping manifold vacuum high would even affect gas mileage. But...every car owner goes through that phase, of wanting all those gauges, useful or not.

 

a vacuum gauge works by simple rules,less vacuum the more gas your using

its a poor mans A/F ratio gauge

it would fine on our trucks,just Tee it of a vacuum line and your fine

or a ultraguage works better as its digital and more accurate.

 

Actually, not true.

The HIGHER the vacuum, at least on carburetors, the better the fuel mileage. Because the throttle plate was closed - the engine was sucking against the throttle plate; that's what created manifold vacuum.

Open the throttle wide and fuel would just pour in...sometimes enriched by an accelerator pump.

The trick was to keep the vacuum reading as high as possible while still staying up with traffic.

 

your right ,fixed it

 

Anyone know what the vacuum should be for a 96 2.4