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7AFE ENGINE FAILING TO START NO POWER ONFUEL PUMP AND WINDOWSI HAVE A TOYOTA PREMIO WITH 7AFE ENGINE IT HAD WIRING PROBLEMS BUT IT WAS ABLE TO RUN THOUGH CHARGING SYSTEM WAS NOT THERE AND WINDOWS WERE

Preview Area. Problem with TOYOTA PREMIO 7AFE ENGINE 7AFE ENGINE FAILING TO START NO POWER ONFUEL PUMP AND WINDOWSI HAVE A TOYOTA PREMIO WITH 7AFE ENGINE IT HAD WIRING PROBLEMS BUT IT WAS ABLE TO RUN THOUGH CHARGING SYSTEM WAS NOT THERE AND WINDOWS WERE NOT OPENING. I REWIRED IT AND IT IS NOT STARTING AND NO SUPPLY TO THE FUEL PUMP BUT EVERY ON THE DASH BOARD IS NOW SHOWINKG OK BUT CANT START COULD IT BE THE COMPUTER BOX WHICH IS DAMAGED..PLEASE

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  • Cars & Trucks Master
  • 22,219 Answers

No you have got your wires crossed on this one ,boy what a pun ? Anyway i cannot help with a good look to see what you have done wrong so i would suggest that you ask a local mechanic to have a look for you

Posted on Dec 06, 2012

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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AutoDoc
  • 169 Answers

SOURCE: wiring diagram

Do you still need help with this?

Posted on Aug 31, 2008

stormbrewin
  • 426 Answers

SOURCE: 1996 mazda mx6 ls cranks but won't start

you may need to run a wire from a keyed ignition source that has power while cranking and running to the fuel pump relay and bypass the pcm to test wether it will run, if it runs put a more permanent wire in place.Not too sure what tests youve done but it seems that fuel is what your focusing on so a quick test is too spray engine start up the intake tube to see if the engine trys to run if it does it eliminates a lot of other potential reasons for a no start condition.Also try squeezing the fuel return line to see if the added pressure will try to make engine run.Could be time to replace fuel pump etc anyway let me know how it goes good luck with it

Posted on Dec 12, 2008

  • 84 Answers

SOURCE: electric fuel pump wiring harness diagram

Your best bet is to type it in to autozone.com and got to the repair section. it will tell you there.

Posted on Apr 23, 2009

  • 125 Answers

SOURCE: 88 Toy, 22R Carb, hard cold start

in your carburetor there is a priming passage. look in there with the air cleaner out and pump the butterfly it should squirt gas. if it doesn't then you need to open the top part of the carb and clean the hole with a hair clip. if this is not the problem it will be the choke but I'm 70 percent that this is the problem.

Posted on May 25, 2009

shocktroop40
  • 155 Answers

SOURCE: fuel pump wiring diagram for 1998 chevy express

Well if theres power going to the relay but not out, then you need a new relay. If theres power in and out of the relay, you might need a new fuel pump. The electric fuel pumps inside the tank are actually lubricated by the fuel as it pumps it, and if it runs dry long enough, it can burn out the pump

Posted on Aug 03, 2009

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I change a battery on a 2007 Toyota Premio and have this engine code p01589


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95 geo prizm wont start


wont crank or will not start.? 2 unique things. no crank always results in , no start (unless you push start the car)
hot wiring the fuel pump relay or any relay in the EFI system , invites
blowing the ECU to kingdom come, bad to the bone that.
I fixed them for 50 years. (electronics controls, so know it !)
you do know its really a toyota right?
what ENGINE? each works different.
my prizm text dump.
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http://www.ebay.com/sch/i.html;jsessionid=D19D723C2EDB4A9FE12E7C01C0677129?_sacat=0&_nkw=geo+prizm+shop+manual&_nkwusc=geo+prizm+shop+manaul&_rdc=1


does car start with test fuel and run, until the fuel runs out.
do you have fuel pressure, while reading the FSM , way of doing it.
some cars only make fuel pressure, cranking and runing.
other make pressure, for 3 seconds key on, and cranking and running only, and all cars drop pump and injections when ECU sees spark die.
that is why stating which Toyota engine YOU HAVE, helps with diagnosis. and please stop hot wiring your car and learn to use a voltmeter. Ive seen $3000 ECU blown up do to bad mechanics.

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Engine startup for Toyota Premio


The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

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1 Answer

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.



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3 Answers

No power going to the fuel pump... 1994 toyota corolla


4afe or 7aFE engine?
as always for ever and ever, check all fuses.
check it cranking some ECU dont power pump until cranked.
the ones that key on power are 3second, can you run that fast?
no. so crank.
if the fuel pump relay closing and sending full 12vdc to pump wire.?
no?
then fuse is blown
if cel lamp is not on key on fuses, are blown or lamp or ecu bad.
fix lamp first it must glow, that glowing means ECU passes, basic self tests. (like a pc doing P.O.S.T) (i rebuild and tune ECU's)
do you need a schematic,(alldata.com has it)

books are amazing things, no? im looking here, seen it many times.
the magic fuel pump relay on the 4AFE.
it is really a 2 coil relay forming what is called logic "AND"gate
7a works same,.... just looked
the ECU enables coil A with LC command line (software) 0v here.
the main relay must close and 12vdc out to pump relay
then the driver cranks, and relay coil B is activated. and pump spins.
always crank and test. see why?
if you need bigger photo ask, .....
if the relay fails to close cranked, check that the crank
signal makes it to (12v) to top left coil below.
if not there will NEVER be fuel. see crank sig below in red.



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