stalls for no reason

Reply Subscribe

Thread Tools

Search this Thread

Apr 7, 2008 | 02:54 AM

harleyhighboy1967

Thread Starter

New User

Joined: Mar 2008

Posts: 2

Likes: 0

stalls for no reason

i have a 1990 f150 5.0 i drive my truck and for no reason it stalls and after a while it will start back up.occasionally it will start right back up before it stops rolling and others it wont start until the next day. so far i put in a new fuel pump fuel pump switch fuel filter distributer coil plugs wires cap rotor thermostat coolant temperature switch pcm i have no idea and the scanner shows nothing me a 18 yr old do it myselfer a 30 yr expierienced mechanic 50 yr expierienced mechanic and another do it yourselfer has no clue. please help thanks in advanced...

Apr 7, 2008 | 03:34 AM

85F150302HO

Junior User

Joined: Mar 2008

Posts: 94

Likes: 0

From: Redbird, OK

sounds like and ignition module to me...look for the infamous yellow dot of death on the face...if it ain't there it still may be bad, just take it to autozone and have it tested...eveytime i have had them go they always have weird symptoms like you are having.

Apr 7, 2008 | 03:59 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 785

From: Simi Valley, CA

Welcome to FTE

1990 F150 5.0 = Dizzy mounted ignition module, a POS since day one.

Several years ago, Ford recalled 5 million vehicles to replace them all.

E43Z-12A297-A .. Ignition Module (Motorcraft DY-425) Marked: E3EF-12A297-A1A; A2A

> > Ford suggested retail price: $160.24 / ftepartsguy.com price: $86.53

E8PZ-12A112-A .. Stator [aka pickup coil] (Motorcraft DU-30-A)

> > Ford suggested retail price: $74.44 / ftepartsguy.com price: $40.20

You'll need a thin shanked Torx driver to remove the module from the dizzy.

And, don't be a bit surprised if it tests out OK...HEAT is the enemy.

THE SCENARIO: The module overheats, engine dies, module cools down, engine restarts almost immediately.

Module overheats, engine dies, module cools down, engine restarts in about 30 minutes.

Module overheats, engine dies, module slowly cools down, engine won't restart for several hours.

Sooner or later, usually sooner, the module will overheat, burn out and the vehicle won't restart.

It's common practice at Ford dealers to replace the stator, also.

Apr 7, 2008 | 10:19 AM

Animalistic

Elder User

Joined: Dec 2006

Posts: 550

Likes: 1

From: Hillsboro, OR

The above posts are correct. I went through this not too long ago. Here is a link to my post. Hope it helps.

https://www.ford-trucks.com/forums/6...l-not-run.html

Apr 8, 2008 | 10:55 PM

harleyhighboy1967

Thread Starter

New User

Joined: Mar 2008

Posts: 2

Likes: 0

stalls for no reason

i replaced that from autozone then a ford dealer and it didnt help at all then i actuatly took one off of my parts truck because it doesnt have any problems and still the same

Apr 8, 2008 | 11:08 PM

Noneshere

Senior User

Joined: Dec 2007

Posts: 128

Likes: 0

From: Florida

Don't forget the grounds to the TFI

They are on the radiator support top, behind the right side of the battery(looking at the windshield).
Theres a small bolt there that holds a few black wires . Take them loose and wire brush them clean.

I went through 4 TFI modules (even a $70 MSD version) in a year, before fixing the problem compleatly

Apr 9, 2008 | 05:41 PM

BlackBart

New User

Joined: Jan 2006

Posts: 3

Likes: 0

I just recently had this same problem with my 95 F150 w/351. The problem with mine was the distributor gear was worn out and sometimes it would start and other times it wouldn't. I changed MAP sensor, Cap, rotor, wires, finally got a eec code reader and found out it was missing the PIP signal from the stator rotor INSIDE the distributor. When my mechanic took the distributor out to change the stator the gear was worn out.