Question about 1990 Toyota Corolla

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Toyota corolla AE91 EFI Year of manufacturing is 1990 cranking but not picking. Confirmed that the fuel pump is pumping. Checked all fuses are ok. Stopped on its own when it was idling. What could be the problem? Samuel Wachiori - Kenya

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The most common reason for the symptom you describe is one of two things. First of all change the fuel filter, then add a couple of bottles of dry gas to the fuel tank. This should solve your problem.

Posted on Mar 18, 2009

  • Joe Hogan Mar 19, 2009

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The fuse for my 2005 Toyota Corrola keeps blowing. I changed he fuel pump. If I disconnect the fuel pump plug going to the tanking and crank the engine it does not blow the fuse. Could it be the sendi

You have to inspect the fuel pump again if the fuel pump ok there is a short circuit between the relay to fuel pump the most you have to inspect is the wire inside the tank

Dec 04, 2013 | Cars & Trucks

1 Answer

Which is the fuel pump fuse?

what country, ? and what engine option? ????????????
the pump may not have 12v power until cranked, is engine dead/?
post the systoms so we can understand the context ....
or just curious. has the drawings.

here, ill look for you. USA, and take wild guess on engine.
ok, the toy has a test port conn.
key on, check pressure after.....doing....
Using a jumper wire, short both terminals of the fuel pump check connector. The check connector is located near the air cleaner. Connect the terminals labeled FP and +B.

reasons for pump failure.
  1. If the fuel pump failed to function, it may indicate a faulty pump, but before removing the fuel pump, check the following items within the pump system:
    1. All fusible links
    2. All fuses (EFI-15amp and IGN-10.0amp) "names"
    3. H- fuse (AM2 30A)
    4. EFI main relay
    5. Fuel pump
    6. Circuit opening relay
    7. All wiring connections and grounds related.

i just check pressure cranking, (rubbers meets rode, logic)
if fail, to have 12v at pump i work backwards.
if 12v at pump, then pump is dead if pump is dead.
simple logic, here, and 100% effective.....!

toy spec on pressure is.
The fuel pressure should read 38-44 psi (265-304 kPa).
and running. with MPI engine the pressure will drop 10psi
due to vacuum reg. rules.......etc....

Nov 30, 2013 | 1991 Toyota Corolla

1 Answer

Replaced the fuel pump in my 1990 toyota corrola and it still won't work. Is there a safety switch or something that I need to flip? All the fuses work.

There is a fuse it is listed as EFI.Also check the main fuse. And the fuel pump relay. Make sure its not open have someone cycle the ignition switch when you are near the fuel tank do you hear the fuel pump come on? If this method check out and still no fuel pump action,let get you a tool.get a paper clip.find the DLC it in the engine compartment (You are a OBD 1) on the cover match up the mark to the DLC pins there are 2 row a single row and a 3 row. Where is says FP is fuel pump where it says B+ is battery voltage jump the FP and B+ together the fuel pump should turn on while you are jumping those 2 terminal together have someone crank the engine.Tip on you tool with key on as you jump FP and B+ and you see little spark voltage that a good sign the fuel pump has power if you dont your power is somehow disconnected

Feb 29, 2012 | 1990 Toyota Corolla

1 Answer

The fuel pump relay is the EFI relay in trhe fuse box under the hood right fender. I replaced it and the pump is working I can smell the gas. The truck still will not start. any sugestions?

Have you checked to see if it has spark at the spark plugs, let me know. Actually there are two relays for the fuel pump, the EFI relay and the circuit opening relay, the circuit opening relay gets voltage from the EFI relay. If the computer doesn't get a spark confirmation signal while cranking then the injectors are shut off.

Oct 22, 2011 | 1990 Toyota Pickup

1 Answer

1993 Corrolla fuel pump does not make noise. put in new pump checked realays according to manual, still no noise at fuel pump I am at a loss. Any ideas

So you replaced the fuel pump because it didn't make noise? did you check for power at the Blue/Black wire? The Circuit Opening Relay powers the pump. Make sure to check ALL the fuses. Ignition and EFI fuses? does the Check Engine ligth come on with key on? it should, did you check the EFI MAIN relay

Nov 18, 2010 | 1993 Toyota Corolla

1 Answer

90 corolla efi problem?

Classic fuel pump failure, Efi fuse runs the fuel pump now its open and it won't start. With it cranking and not starting add a little fuel to the air inlet and if it (flashes off ) ( runs a few seconds ) there's no fuel and the fuel pump is the most common cause. The pump is in the tank and unles s you feel that you as good as any pro mechanic and have the experience then let a pro do the work as the danger is high even for a pro.

Aug 19, 2009 | 2004 Toyota Corolla

1 Answer

Keeps blowing 15a efi fuse 1991 toyota pickup 2.2 re

there's a short somewhere causing that amperage to go up

Dec 12, 2008 | 2004 Toyota Corolla

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