Question about 1992 Toyota 4Runner

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My 1993 4runner blows the efi fuse whenever the key is turned to start it. just replaced the ignition control module.

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Well since the EFI fuse, #1 15A is only powered when the key is turned on or in the start position you have a short to ground in any/all of the following circuits...
cruise control circuit

different methods to diagnose, but I'd start by inspecting the little wires that run from the alternator

Posted on Jul 28, 2010


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1 Answer

15amp efi fuse blows

It is not related to car being cool down , I think you are having ignition switch on . The EFI fuse goes directly to the contact switchin the EFI relay. Maybe try removing the EFI relay, turn the ignition to ON, and see if the fuse blows.
Doing this, the car won't start, but it might give you a clue as to where the short circuit is located. ... Check the fuse/relay box next to the driver side fender in the engine compartment.

Apr 03, 2015 | 2003 Pontiac Vibe

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There is no reaction when turning the key to start the car

Turn key to On.
Turn on headlights manually... Do they come on?
Are there any lights on the dash?
If yes to these, battery is possibly not the sole problem.
Check for good, tight and clean connections at battery terminal posts!
If yes to above, continue on & get a helper... Turn key past on, to Start position.
Do you hear a click sound at time key is turned to Start?
If yes, then ignition switch is not problem, starter relay is getting power, and is now sending power to starter, but starter is not working.
Pic any No's... Then look there.
Good luck.

Mar 29, 2015 | 2005 Ford Focus 1.6

1 Answer

Solution to efi fuse blowing repeatedly

wiring problem.
try to increase the fuse
for example: from 15amp to 20 amp

Oct 04, 2014 | 2005 Toyota Corolla

2 Answers

No spark

PLEASE, up date your posts and not post 5 posts.
update it and tell the full story 1 time. THEN ADD TO IT, and please not start a new post. for 1 problem.

first off , i answered in details how to test the nostarts for just that.
but in another post its a blown fuse. then you fail to say which it is
or if it RE BLOWS> that is a big problem , posting

first off here are the no start rules. (you lost spark , got that)
1: check fuses, if the fuse blows again, this is JOB 1. spark is later. much later, the ECU can no process data, if there is no 12vdc POWER , it cant,
nor can it glow the CEL /SES lamp in the dash, IT cant.
The ECU in this car makes spark and fuel happen.
there are 3 fuses to blow that can kill the ECU dead.
so the first JOB on all modern EFI cars, is to get the CEL TO GLOW.

your problem on car is not NOSTART
its NO power
no 12vdc power to the EFI system parts.
is the battery charged?
12.6vdc rested, or at 11v. ?
this is first.
then does that fuse keep blowing. i bet does, my gut feeling.
and which fuse?
if the fuse blows, we must to short testing
we have great videos to cover that, very detailed,....

the honda, has free operators guides
and full FSM , for free... ask.

Jul 09, 2014 | 1991 Honda Accord

2 Answers

I have a 1993 Celica that ran fine, cut it off and when I tried to start it again it would crank but wouldnt start?

Your ignition module or wires to it are fried. If you keep putting fuses in, you will melt the wiring. Remove the module and using the guidelines of the manufacturer test it. If it is bad, or it is old and you haven't changed it in a while, go ahead and replace it. Before you do, when you remove it turn the key on and see if the fuse still blows. If it does, it is the wiring or something else. My bet is the module.

Nov 02, 2013 | Toyota Celica Cars & Trucks

1 Answer

Why does my efi fuse keeps popping 1999 chevy prizm

Pull the EFI relay, replace the fuse, and see if it blows when you turn the key on. If it does not turn the key off, reinstall the EFI relay and remove the circuit opening relay/fuel pump relay. Turn the key on. If the fuse blows than we know the problem is One of the O2 sensors, the IAC, the purge solenoid, or the ECM You can unplug the O2 sensors, iac, and purge solenoid. Replace the fuse, turn the key on, and plug them in one at a time until the fuse blows. Replace that component. If the fuse blows with those unplugged than its probaly the wiring and possibly the ECM. let me know what you find and I'll help you more if needed.

I’m happy to assist further over the phone at

Aug 05, 2012 | 1999 Chevrolet Prizm

1 Answer

I have a 91 olds supreme 3.1 v6 it shut off and won't start back .... It starts but won't turn over.... And when turn the key back off it's blows the dis fuse wich mean direct ignition system...

Check the coils that have been replace for bent or broken prongs that plug into the ignition control module and if nothing looks damaged then i would think the ignition control module is faulty.Replace ignition control module.

Jan 21, 2012 | 1991 Oldsmobile Cutlass Supreme

1 Answer

Engine wont start,efi 15amp fuse keeps blowing

EFI (electronic fuel injection) is a nasty fuse to blow. Unplug EFI module for 5 minutes. Plug it back in and try to start it immediately to confirm a heating short or possible bad module.

Apr 23, 2011 | 1994 Toyota Pickup

1 Answer

I have been having issues with my 1996 Jimmy. When I turn the Key to accessory, the #10 ecm ignition fuse blowes. It will not start. Any suggestions? Thank you.

Unplug the injectors, coil, crankshaft position sensor, and the ignition module. Check to see if the fuse blows with these unplugged. If it doesn't than plug these back in one at a time until the fuse blows and replace that component.

If it still blows. than the pink wire that supplies power to all of the above components is shorted. A careful inspection of the wiring will be necessarry to find the problem.

One other note that fuse also feeds the Vehicle Control Module on vehicle equipped with a VCM (4.3 liter)

I’m happy to assist further over the phone at

Oct 22, 2010 | GMC Jimmy Cars & Trucks

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