3vze EFi fues blows every 5 minutes and the engine wont start now.. Help !! :(

[hjalti_gto]

Hi guys. I have a major problem with my 1990 4runner with the 3.0 v6 engine. It started to bog and lose power when I was pulling a heavy trailer today . And soon after it blew the EFi fuse under the hood and the engine died. I put new 30amp fuse in and drove 5 miles then it blow agin.. and again and again , i let the trailer go and drove it under no pressure and it started again to bog and loose power.. ( like it was running out of gas.. ) and then no power = fuse gone. , I repeated this 10 times ( 10 new fuses ) to bring the car home.

But now last time it started boging and looseing power and then dying the fuse did not blow... It is still intact but the truck will not start , first when i turn the key it did cough alittle but now it has no life at all

Has anyone had this problem before ??

 

[hjalti_gto]

Why does this site even exist ?
What is the point of this site if no one is interested in helping af fellow user here?

I have allready got 20 replies at yotatec. about this question ...

 

[ChildrenOfBodom]

Why does this site even exist ?
What is the point of this site if no one is interested in helping af fellow user here?

I have allready got 20 replies at yotatec. about this question ...

Not that we don't want to help you, but I don't believe there are many here with 2nd gens.

Lets face it man, when you need a real question answered, Yotatech is the place. Not saying I am any better than anyone here, but sometimes the folks here are useless.

 

[Rix]

O2 sensor wiring melting onto the exhaust will do this.
so will a bad coil, bad igniter, etc.
there is no one answer.

 

[hjalti_gto]

What about the fuel pump ??

 

[gsweetz]

What about the fuel pump ??

thats would have been my first guess.. considering that it took a couple EFI fuses before the pump died... pump on its way out probably was drawing tons of current just before the fuse blew..replace the fuse, pump heats up again... fails again, blows the fuse... now the pump is dead.... no blown fuse or it has melted somewhere else..

 

[hjalti_gto]

I get spark.. that is not the problem ,

When i switch the key position to on or start i dont hear the fuel pump..

can the pump it self just die like this , blowing fuses or is it some wires ?

I dont think the ECU is fried becorse the check engine light goes on when i put the key to on position..

I will check out the wires for the fuel pump tomorow.. Thank god for my 4" body lift

I dont neet to drop the tank to replace the pump :hungry:

 

[JohnsD90]

If it was Carb this would be easy cause you could splash some fuel in the Carb and see if it starts, sometime EFI sucks. Good luck with the issue.

 

[hjalti_gto]

Okey i did the "cheap trick" fuel pump jumper in the Timing and Diagnostic Check Connector location in the hood.

Toyota 4Runner and Pickup: Cheap Tricks

And the fuel pump didnt start.

That tells me the problem is in those things

*First off fuel pump
*The wiring to the fuel pump
*The circuit opening (CO) relay is NOT functioning to some degree

 

[hjalti_gto]

I found out what was wrong.
The wires for the fuel pump had been rubbing side the exhaust and melted.

the truck runs just fine now.

Thanks for your Help guys

 

[Rix]

Well, I was close.
:guitar3: