This is topic No spark, No fuel. Died randomly. in forum Tech Talk at Northern California Ford Owners  .


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Posted by Wrench Monkey (Member # 9529) on :
 
Where to start, was getting off freeway and the car jerked like it was losing power, then ran normally. Next turn, it died completely and wouldnt start back up, waited five minutes and it ran. Long story short, it died for good. Initially, i wasnt getting fuel. Pump wasnt coming on, didnt think to check for spark.

But, after jumping the pump, still no fire. So i checked, no spark.

I also had the connecter on the right side of engine bay touch the headers, the one that runs down the strut tower. Runs to the o2 sensors. Melted, but didnt expose any connectors. Could this have fried ecm?
 
Posted by RAP66 (Member # 3360) on :
 
I had something similar to this, in my case turned out to be the TFI module on the distributor.

Pull it and have it tested at the shop.
 
Posted by Wrench Monkey (Member # 9529) on :
 
Tfi will kill spark and fuel?
 
Posted by JohnB (Member # 969) on :
 
quote:
Originally posted by Wrench Monkey:
Tfi will kill spark and fuel?
Yes, the module is the common link between the ECU and fuel pump relay.
 
Posted by Wrench Monkey (Member # 9529) on :
 
Anyone know where the.relay is for fuel pump on a 92?
 
Posted by HaulinAss Motorsports (Member # 541) on :
 
Had this issue happen a few weeks back. Driving down the road it acted as though it was going to die, went to pull over and it burped a bit and was fine, weird but drove another 30 miles no prob. A bit later went to drive it and got about 5 miles it died completely and wouldn't start again. Had to tow it back, let it sit over night and it started right up. Changed the Distributor and haven't had the problem and have driven it over 700 miles since!
 
Posted by Wrench Monkey (Member # 9529) on :
 
Hope you are right, my tachometer was fluctuating prior to this for a few weeks. Maybe i burned some fusible links up
 
Posted by JohnB (Member # 969) on :
 
quote:
Originally posted by Wrench Monkey:
Anyone know where the.relay is for fuel pump on a 92?
Under the drivers seat.
 
Posted by HaulinAss Motorsports (Member # 541) on :
 
quote:
Originally posted by JohnB:
quote:
Originally posted by Wrench Monkey:
Anyone know where the.relay is for fuel pump on a 92?
Under the drivers seat.
Under the hood [Wink]
 
Posted by moeofit32 (Member # 10393) on :
 
hey my car died on the freeway and i changed the module on that distributor i sold u turned out msd coil when to shit jus a heads up
 
Posted by Wrench Monkey (Member # 9529) on :
 
Huh moe? Maybe it is my coil, anyone know what else?

Im out of somutions, i do t get spark or fuel. Maybe pcm is dead. Fuck my life

Replaced the distributor, anyone know ifit can be the ign switch? And where is the ecu relay


Anyone have an idea what other items control spark aswell fuel?

[ March 26, 2012, 04:40 AM: Message edited by: Wrench Monkey ]
 
Posted by DIRTY SALLY (Member # 7845) on :
 
Have you checked your fuse link?
 
Posted by Wrench Monkey (Member # 9529) on :
 
Iopened up alot of the harness. Cant find any fusible links
 
Posted by DIRTY SALLY (Member # 7845) on :
 
its near where you plug in the code readers iforgot what its called up near the driver side buy the windsheld motor
 
Posted by bentley mobs a stang (Member # 11119) on :
 
Sounds like a bad pickup coil
 
Posted by Wrench Monkey (Member # 9529) on :
 
Two different distributors? Would a bad pickup stop fuel and spark? No battery voltage at ign. Coil, and fuel pump. I switched the fuel pump relay with the other relay next to it.
 
Posted by 86- 50 (Member # 4723) on :
 
I would try to put in another computer if you have a boy with a 50 just swap it to try it out real quick, i had some wierd symptoms come from a bad computer on mine and my boys 5.0 recently.
 
Posted by bentley mobs a stang (Member # 11119) on :
 
The injectors get a duty cycle from the pickup coil. I'll look at work today for a resistance value for it. But the fuel pump shouldn't be affected by it, or the coil. U could even have a bad ignition switch. Try wiggling the key and see if u can find a sweet spot where u hear the pump kick on. If that works, replace the ignition switch
 
Posted by Wrench Monkey (Member # 9529) on :
 
quote:
Originally posted by 86- 50:
I would try to put in another computer if you have a boy with a 50 just swap it to try it out real quick, i had some wierd symptoms come from a bad computer on mine and my boys 5.0 recently.
Mine is tuned though, maybe it.will start though ill test it. Im replacing.ign switch today
 
Posted by autumnstang97 (Member # 6111) on :
 
Any luck?
 
Posted by DIRTY SALLY (Member # 7845) on :
 
[Confused]
 
Posted by LXjames (Member # 10791) on :
 
Your tfi module is "overheating" after it cools that's what allows the car to run again. Replace bro I had this problem plenty of times
 
Posted by Wrench Monkey (Member # 9529) on :
 
Replaced tfi with two known working ones and a brand new. Also used different dist. Entirely, i also replaced fuel pump relay, and ignition switch. I am at a loss.


I tested the power wire, red at fuel pump relay and according to diagram i should see 12v, i see 3.6. I pulled fusible links none are bad, so far
 




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