Fordmods Logo

Spark. 

 

Page 1 of 1 [ 14 posts ] 

 
 Post subject: Spark.
Posted: Sat Jul 17, 2010 1:01 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

Okay, so... my car hasn't been starting, well to be more precise.. It starts when it wants to.

It hasn't wanted to start all week, some checking about and I found the distributor was loose so I figured that the timing was off. This morning I turned it over and to my surprise it started, it started about ten minutes before a mate was to come around with his timing light, we set the timing and tightened the distributor clamp and I waved him goodbye. About ten minutes later, it once again decided to not start.

Time for some troubleshooting.
The pump primes. Check.
Earth leads. Check
Does it have spark? No.
Leads within recommended ohms. Check
Coil okay. Check

The only thing that I can think of that can cause the engine to want to not start one minute, yet the next minute let it start is the tfi module. Am I doing this rite?

 

_________________

Wanted, CFI manifold

Last edited by knowsfords on Tue Aug 03, 2010 6:22 pm, edited 2 times in total.

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sat Jul 17, 2010 5:27 pm 
Getting Side Ways
Offline
User avatar

Posts: 1427

Joined: 21st May 2005

Location: Melbourne
VIC, Australia

Its a fair assumption that its the TFI.
Weird that your dizzy was loose though...

One more test to perform to confirm the TFI or not is to get an LED, connect it to one of the injector plugs, if it doesnt flash while cranking, then its definitely the TFI.

 

_________________

EL Fairmont Ghia - Manual - Supercharged
- The Car
- The Headlights

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sat Jul 17, 2010 6:14 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

it does sound tfi related, if there is a fault in the tfi, once heat builds up in the module it can cut spark untill it cools again,

but most of the time a complete failure is usually the case...
Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sat Jul 17, 2010 9:04 pm 
Stock as a Rock
Offline
User avatar

Posts: 108

Joined: 12th Jun 2010

Ride: El falcon

Location: melbourne
VIC, Australia

TROYMAN wrote:
it does sound tfi related, if there is a fault in the tfi, once heat builds up in the module it can cut spark untill it cools again,

but most of the time a complete failure is usually the case...

All the TFI faults I have ever had, have given funny running issues.

My EL ran for 6 months with a faulty TFI module, it would start and drive fine, you could even give it squirts of full throttle, but hold full throttle and the moment you got off it, it would die. To get it started again i would have to disconnect No.1 spark plug lead and start the car then with the engine still running i would have to reconnect the spark plug lead. If i turned it off to reconnect the lead it wouldn't start. And it would only work with the No.1 lead, any other and it would refuse to start, weirdest thing ever.

MAD wrote:
Its a fair assumption that its the TFI.
Weird that your dizzy was loose though...

One more test to perform to confirm the TFI or not is to get an LED, connect it to one of the injector plugs, if it doesnt flash while cranking, then its definitely the TFI.

Good idea :D i never thought of doing that, silly considering the TFI module tells the ECU when to fire the injectors. :lol:

 

_________________

I enjoy the symphony of mechanical harmony, :lol:

EL build thread
Turbo DOHC - AU front suspension - AU IRS - T56 - xr kit
the-garage-f53/bbqburners-daily-turned-toy-d-t93182.html

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Mon Jul 19, 2010 5:52 pm 
Smokin em up
Offline
User avatar

Posts: 262

Joined: 5th Nov 2006

Location: wilcannia
NSW, Australia

it may also be the hall sensor in the dizzy. if it plays up, it doesn't give the engine the pip signal and it won't fire the injectors. pop the dizzy out, and if the bush is flogged out, just grab a new dizzy off ebay.

 

_________________

vote for pedro ? f**k pedro, f**k him up his stupid a***hole.

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Fri Jul 23, 2010 7:52 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

Okay, so after replacing the tfi, the rotor button and the cap... off to get a blaster 3 in the morning to mount to the shock tower.

EDIT: The coil wasn't the suspect.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sun Jul 25, 2010 7:02 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

OKAY.

So, Anyone want to sell me a match.
I have checked EVERYTHING.

Voltages, resistances, I even changed the sparkplugs incase they were cracked internally or something, checked the ecu relay, checked for the Pip signal and it was there... everything should be fine, it still wont run.

I even tried to start it using the original pre-smartlock ecu after removing the smartlock bypass to try and eliminate that as a problem.

There's zero cranking spark.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sun Jul 25, 2010 7:58 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

did you check if there is a , spout (spark output)signal from the ecu to the tfi ??
and was the tfi you used a new one??
Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Sun Jul 25, 2010 8:44 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

yes to both.

I have put the matches down for now, because I checked the voltage at the coil again and I think the problem may lay in the connector I made up to clip into the bosch ev1 coil connector. It's dark, so it will have to wait again until tommorow after work to confirm, in the mean time I have ordered from ebay a ev6 to ev1 adaptor that I'll cut up.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Tue Jul 27, 2010 5:58 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

There's now voltage to the coil, but its only 5v. Now to try and figure out why.

 

_________________

Wanted, CFI manifold

Last edited by knowsfords on Tue Jul 27, 2010 9:34 pm, edited 1 time in total.

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Tue Jul 27, 2010 9:33 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

Okay, so just double checked pip, there's no pip signal. The first time around I used a multimeter and it there was pip. This time I used a lightbulb, no flashy, no light... no pip.
I think the hall sensor might have been the culprit all along.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Wed Jul 28, 2010 9:27 am 
Getting Side Ways
Offline
User avatar

Posts: 1427

Joined: 21st May 2005

Location: Melbourne
VIC, Australia

A light bulb might not react quick enough. Best to use an LED for things like that.

 

_________________

EL Fairmont Ghia - Manual - Supercharged
- The Car
- The Headlights

Top
 Profile  
 
 
 Post subject: Re: Am I right in assuming its the TFI.
Posted: Wed Jul 28, 2010 6:30 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

It was an led, the light was solid, no flashing. I'm pretty sure its the hall sensor. I unplugged the tfi module again, reseated it in case I didn't get it in there properly and still nothing.

No more forking around, I've ordered a new distributor from ebay.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
 
 Post subject: Re: No Spark.
Posted: Tue Aug 03, 2010 6:21 pm 
Getting Side Ways
Offline

Posts: 553

Joined: 28th Oct 2005

Ride: Peacock EB Falcon

Location: Brisbane
QLD, Australia

Woo, the coil is sparking!
New distributor arrived, pulled out the old one (by the way, the way people sook about taking them out you'd think it was pulling teeth), swapped the brand new bosch tfi module onto the new dizzy and in it went.

Plugged one of the old spark plugs in to the coil lead, gapped it out to 5mm, turned it over.

*ZAP*

HUZZAH.

EDIT: In other words, it was the last thing it could have possibly been... the hall sensor.

 

_________________

Wanted, CFI manifold

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 14 posts ] 

Who is online

Users browsing this forum: Google [Bot] and 36 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Sun Dec 17, 2017 9:23 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names