• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

5.8 EFI issue.


Dugan

Member
Joined
Apr 5, 2012
Messages
646
Reaction score
12
Points
18
Location
New Castle, DE
Vehicle Year
1989, 1949
Make / Model
Ford, IH
Engine Size
2.9L, 355 SBC
Transmission
Manual
Well the motor runs in diff firing orders other then the 302 and 351, but runs like shit. I think this is due to the dist not being at TDC, but when we went to pull the dizzy we heard the relays keep kicking on and off. Tried another dizzy and it did the same thing.

We then noticed the base of the dizzy had a positive charge and arced to grounded metal.. Ive never heard of this, but on the TFI sensor there is only two positives, the positive in and the (-) from coil. Anyone ever heard of this or is it normal to have the base of the dizzy hot?
 


bobbywalter

TRS Technical Staff
TRS Event Staff
V8 Engine Swap
TRS Technical Advisor
TRS Banner 2012-2015
TRS 20th Anniversary
Ugly Truck of Month
TRS Event Participant
Joined
Aug 9, 2007
Messages
23,470
Reaction score
4,668
Points
113
Location
woodhaven mi
Vehicle Year
1988
Make / Model
FORD mostly
Engine Type
V8
Engine Size
BIGGER
Transmission
Automatic
2WD / 4WD
4WD
Total Lift
sawzall?
Tire Size
33-44
My credo
it is easier to fix and understand than "her"
base should not be hot.


the reluctor as the rotor turns will trip the relays though to run the pump when power is on.
 

shane96ranger

Well-Known Member
V8 Engine Swap
Joined
Oct 20, 2009
Messages
8,328
Reaction score
221
Points
63
Location
Utah
Vehicle Year
1997 / 1989
Make / Model
Ford F150-Stang
Engine Type
V8
Engine Size
4.6 Triton / 5.0
Well the motor runs in diff firing orders other then the 302 and 351, but runs like shit.
I don't understand. Is this a question? Love to help out, but I don't understand this.
 

martin

New Member
Joined
Aug 6, 2007
Messages
3,218
Reaction score
26
Points
0
Age
77
Location
St Bruno, Quebec
Vehicle Year
1984
1991
Make / Model
ford
Transmission
Manual
If I remember correctly the tfi uses the distributor case as a ground. if the distributor is not mounted and the ignition is on, the case would then appear to be positive relative to the battery ground. In that case, that would be normal.
 

Dugan

Member
Joined
Apr 5, 2012
Messages
646
Reaction score
12
Points
18
Location
New Castle, DE
Vehicle Year
1989, 1949
Make / Model
Ford, IH
Engine Size
2.9L, 355 SBC
Transmission
Manual
If I remember correctly the tfi uses the distributor case as a ground. if the distributor is not mounted and the ignition is on, the case would then appear to be positive relative to the battery ground. In that case, that would be normal.
Yea this is how I felt, but when it is mounted and you try to turn it to fine adjust the timing, the relays click on and off
 

alwaysFlOoReD

Forum Staff Member
TRS Forum Moderator
TRS Banner 2012-2015
TRS 20th Anniversary
Joined
Apr 13, 2009
Messages
13,980
Reaction score
5,135
Points
113
Location
Calgary, Canada
Vehicle Year
'91, '80, '06
Make / Model
Ford, GMC,Dodge
Engine Size
4.0,4.0,5.7
Transmission
Manual
2WD / 4WD
4WD

Sponsored Ad


Sponsored Ad

Staff online

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Truck of The Month


Mudtruggy
May Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top