No Spark No Fuel Pump

[FordBroken2]

Alright, I’ve never done a forum post before but I’m a stuck and I have no idea what to do.

I left my house Saturday and made it about 500 feet before my Bronco died, it seemed like I ran out of gas but I had just put gas in it.

i thought the fuel pump was the issue because it was not coming on when turning the key. I bought a replacement pump and installed it, still a no go.

From there I checked the fuel pump fuse, it was fine, replaced fuel relay, still no shot.

I could jump the fuel pump on by crossing the wires where the relay is.

After attempting to start the vehicle while jumping the fuel pump and it still not starting, I checked for spark, nothing.

I checked directly from the ignition coil, bypassing the distributor completely and there was no spark.

I opened up the computer and checked for bad caps but everything looked fine, I also tried another computer but no dice.

I’m at a complete loss here, I have a multimeter and am more than willing to diagnose but I’m not sure what to check at this point.

 

[franklin2]

If you want to throw a part at it, that can be very likely the culprit, buy a TFI module and swap it out. It's mounted on the distributor and is what fires the coil. The computer tells the TFI when to fire, but the TFI module itself has the harder job of driving the voltage to the coil.

P.S. You may need a special socket to get it off. Or grind one of your sockets to make it fit. And it's a little bit hard to get to on these engines since the distributor is in the back.

 

[FordBroken2]

If you want to throw a part at it, that can be very likely the culprit, buy a TFI module and swap it out. It's mounted on the distributor and is what fires the coil. The computer tells the TFI when to fire, but the TFI module itself has the harder job of driving the voltage to the coil.

P.S. You may need a special socket to get it off. Or grind one of your sockets to make it fit. And it's a little bit hard to get to on these engines since the distributor is in the back.

I have replaced the TFI in the past 6 months but I might have a new one lying around so I’ll try that. Would that effect the fuel pump not kicking on?

 

[Hoosierman]

I know decent ones ain't exactly cheap, but I now carry a spare TFI in my Ranger, even though I just recently performed a TFI relocation.

 

[franklin2]

I have replaced the TFI in the past 6 months but I might have a new one lying around so I’ll try that. Would that effect the fuel pump not kicking on?

Yes. You should get the initial pump prime when you first turn the key to run. But then the computer waits for signals from the distributor before it will activate the fuel pump relay again. It needs to verify the engine is actually turning before it will power the pump.

 

[Curious Hound]

If the fuel pump doesn’t run when you first turn the key, troubleshoot that first. The fact that there is no spark may be related. The common things to both of those will be related to common wiring points like the start switch circuit and grounds.

 

[Hoosierman]

I feel every older vehicle should have it's grounds thoroughly checked, refreshed, and if necessary, replaced.

 

[SenorNoob]

Does the check engine light come on when you turn the key to run? If not might check out the EEC relay/power/grounds. Computer get power first then grounds the fuel pump relay to turn it on. I had a bad connector just behind the ground post on the battery that killed ground tot he computer.