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How to set vac regulator

Customer Question
How to set vac regulator
Submitted: 6 months ago.Category: Toyota
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Customer reply replied 6 months ago
Been working to resolve this problem for a month or so , fixed , tested so many things , broke down at least 12 times , frustrating .
Did find info on how to test ign con mod , doing that now , did find one in town 250$ !!! Yikes
That vac regulator not sure what if maladjusted would affect?
Answered in 23 minutes by:
12/23/2017
Toyota Mechanic: Eric, Automotive Repair Shop Manager replied 6 months ago
Eric
Eric, Automotive Repair Shop Manager
Category: Toyota
Satisfied Customers: 34,902
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

What is the year, model and engine size of your Toyota?

Do you mean the fuel pressure regulator?

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Customer reply replied 6 months ago
Ok , so back to original problem , new ignitor in , new coolant temp sensor , battery full charge , started right up , took a few seconds for cold start injector to bring up idle , 2000 rpm smooth run , then some misses , engine light came on for a second , throttle tap , as rpm comes down more misses and same eng light 2 seconds , smoothed out , warmed up , idle dropped to 1100 , little rough w 1/2 second misses , idle drop to 900 erratic, sputtered out , started back up , norm for 10 sec or so , died , nostart now , fuel pump comes on and stays on w key on when I manually trigger circuit opening relay , still no start
Customer reply replied 6 months ago
When eng light comes on for a moment when running , does an error code get stored for retrieving?
Further info for you , new fuel filter ( 7000 mi ago) . New distributor , wires , plugs .
The only thing I've noticed that black plastic hex knob I was asking about does is fuel tank pressure when removing gas cap , knob turned in increases tank pressure , unused fuel return from injection sys. ?
Please help , this is all making me nuts & its 18 degrees out ��
Customer reply replied 6 months ago
Sorry forgot info for you : 93 Toyota previa le 2tzfe eng 2.4 l.*****, man trans
Customer reply replied 6 months ago
Going to try sending a video of start/ run
Toyota Mechanic: Eric, Automotive Repair Shop Manager replied 6 months ago

HI,

It may store a code, so you need to check for stored fault codes - see attached pdf file on how to do so

The data link connector referred to in directions is located in the engine compartment area under the drivers seat.

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Satisfied Customers: 34,902
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