RTH: Crank no start....grrrr

[FJBen]

Okay, drove the cruiser around running errands last night. Came home shut if off to run inside real quick and change clothes. Went back out to start and just cranked and sputtered for a few seconds and that was it.

Cranks and cranks, but no fire.

CEL is on like normal when you go to start.

Replaced EFI main fuse with the fuse from my wife's 80. Same thing, no start.

Checked all fuses, all fuses good.

Fuel filter is around 1.5 years old.


I sprayed a SMALL amount of starting fluid, then cranked. She fires and sputters on that. That leads me to believe it's fuel related.

How should I go about figuring if it's the pump or the filter? Or a relay for the pump?

TIA

 

[concretejungle]

if you have replaced the EFI fuse, i'm not sure what else... Other than the fuel pump taking a dump on you? How would you test that?

 

[FJBen]

I'm wondering if it's a fuel pump relay. I've been reading about those going flaky.

The only thing is that I wired up some new fog lights, and wired in my backup camera the other night. All was well and working fine, then not so much last night.

Is the fuel pump relay on the fender or under the dash?

 

[Beowulf]

if you have replaced the EFI fuse, i'm not sure what else... Other than the fuel pump taking a dump on you? How would you test that?

He would not get the MIL light at ignition on if the EFI fuse was blown.

Try full throttle start. If it will run then look at the Fuel Pump Relay. The FPR is under the bonnet inside the left fender, aft of ABS jungle. If it won't start then look at the wiring to the fuel pump (see NorCalDoug's great adventure in DV)

-B-

 

[FJBen]

He would not get the MIL light at ignition on if the EFI fuse was blown.

Try full throttle start. If it will run then look at the Fuel Pump Relay. The FPR is under the bonnet inside the left fender, aft of ABS jungle. If it won't start then look at the wiring to the fuel pump (see NorCalDoug's great adventure in DV)

-B-

No starting under full throttle. I hear the clicks on the relays, and can feel the two clicks ( I assumed that position was the FPR) Just like my wifes 80. but no start.

I think I'll pull open the Fuel pump and check for wires broken etc...I"m supposed to go wheeling tomorrow

 

[Beowulf]

I thought you said you checked your fusible links at the battery, but reading again, it does not look like you have checked those so start there before you tear into the fuel pump wiring. Doug's problem was a short which was blowing the EFI fuse and your EFI fuse is OK. (Could be an open though.)

Do you have the EWD?

-B-

 

[FJBen]

Only the crappy EWD from haynes.

My other thought is that I wired up lights and the backup camera a day before this happened. It did however drive just fine. I"m going to check that relay and also those fusable links. It's possible I could have messed one up/fried it.

The lights and backup camera however still work. Very useful for sitting in your driveway.

thanks for your help

 

[evanz80]

This may be totally off base, but could give you one more thing to check out. I was wheeling a couple weeks ago and my '93 80 stalled a few times while driving. It had never done that, so I knew I had a problem. It finally died and would not start at all. Exactly like you said above - "cranks and cranks, but no fire."

One of the guys I was with noticed that a wire was about to break. The wire was connected to the positive battery terminal and had been rubbing against the battery box where the wires go through the hole into the engine compartment. I'm not sure what the wire's function was, but it was connecting a fusible link to the battery. Looking back on it, it seems like it had to be something related to supplying fuel to the engine.

Anyway, we were able to splice in a new piece of wire between the fusible link and the battery and that was enough to get it running again.

Hope this helps!

 

[Beowulf]

Only the crappy EWD from haynes.

I have an electronic copy at the office. Let me know if you need a specific page. In the meantime, there was a RTH thread in mid-December with a similar problem we had with Rory's truck up in the Jemez mtns. We had several good responses in that thread and I am pretty sure the relevant EWD pages got posted in that thread. Dan started the thread.

-B-

 

[FJBen]

I have an electronic copy at the office. Let me know if you need a specific page. In the meantime, there was a RTH thread in mid-December with a similar problem we had with Rory's truck up in the Jemez mtns. We had several good responses in that thread and I am pretty sure the relevant EWD pages got posted in that thread. Dan started the thread.

-B-

Thanks guys....I'll check that thread

went home at lunch...messed around with it.

Checked the EFI main fuse, and the starting circuit relay (behind the kick panel) both checked/worked.

Stole my wifes Fuel Pump relay, same thing no start. My old one worked on hers.

Checked the fusible links...they looks a little dingy/dirty, but other than that...not bad. I could be wrong on that...I'll look a little better when I get home. I'll see if our Toyota dealer has them...I'm guessing not.

My battery is 7 years old and isn't the best. I don't think thats the problem, although I'm going to replace it anyways. I'll get that this afternoon.

I pulled the seats and carpet back. I"m getting 12v on one connection with key on, but no others. I don't hear anything from the pump when I key on. Should I be able to?

thanks again for the help...just a little bitter. Finally getting to wheel it first time this year...and this happens...hopefully I can fix it before tomorrow.

 

[fj80toyman]

Have you tried bypassing the relay at the diagnostic connector?

Jump +B and Fp at the connector with a small wire. You've already thrown a relay at it, but there may be something blowing the relay that bypassing it might indicate.

Sounds like a bad fuel pump to me, and if you put your ear right next to it when you jump it, you should be able to hear it. Maybe not just with the key on, but with it jumped.

Hate to see a guy miss a day of wheeling.

Good luck, Dan.

 

[FJBen]

I'm getting new fusible links and batter terminals after work.

I got the new battery. Will try jumpering the fuel pump.

Good times...

 

[Beowulf]

Keep us posted.
-B-

 

[medtro]

Do you have spark? My coil was toasted when I had crank and no start.

 

[FJBen]

YAY, all is well

After hours of testing relays, bypassing fusible links, wiring checks, fuse checks new battery, cables, pulling the fuel pump...we found the culprit.

Upon testing the fuel pump, I couldn't get it to run when I put power to the blue wire (power) in this photo. (Norcaldougs fuel pump in the pic) I was just looking to make sure I didn't have a cracked wire. But when I put power straight into the pump, she ran fine.

There is a little connector that plugs into the fuel pump. disconnected that to test for continuity. Wire checked fine...hmmm...one of the plugs in that connector was a little corroded. we plugged it back in, put power to her and she work. Wiggle the connector and it turned off The connector was loose and not seating in, we pulled the connector apart, cleaned the terminals, crimped them a little tighter and made sure it was a good/tight connection. We also put some shrink tubing where is curves around the bracket so it couldn't rub, although there were no signs of rubbing.

Put it all back together and Vrooom...went wheeling on saturday, that turned into fixing a bunch of other vehicles (not mine) My friend and I were on the trail from 11:00 am to 11:00pm fixing other peoples rigs But everyone is off and safe, my kids were complete troopers and never complained once.

Well, here's a few wheeling pics, thanks everyone for the help! Just another thing to check, loose fuel pump wires.