Electrical 90 Lx 5.0 Smoke From Coil With Key On

M

Mustang-mark

New Member

Apr 11, 2017

4

0

1

Apr 11, 2017

#1

• Apr 11, 2017

• #1

Like the title says I have smoked 2 coils today and I can't figure it out. Car ran fine then died like it ran out of fuel. Will not refire. Cranks over just fine. But if you leave the key on to check voltages or for spark the coil starts to sizzle and then smokes like a powwow. It is like the tfi is stuck in push start mode and not turning the coil off just charging it till it blows smoke.

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

Apr 12, 2017

#2

• Apr 12, 2017

• #2

Disconnect the coil and use a Noid test light on one of the fuel injectors to make sure that the PIP sensor and TFI are working OK. You should get a regular flash each time that injector would pulse while the engine is cranking.

Plan on replacing the coil after you finish the diagnostic testing. It will undoubtedly fail at the most inopportune time...

 

mikestang63

SN Certified Technician

Aug 27, 2012

11,606

8,859

214

In the garage

Apr 12, 2017

#3

• Apr 12, 2017

• #3

if you dont have a NOD tester , take an 1157 or other small bulb and solder two small wires to the terminals on the bulb to make a home made NOID test light.

 

M

Mustang-mark

New Member

Apr 11, 2017

4

0

1

Apr 13, 2017

#4

• Apr 13, 2017

• #4

Fixed the issue it was the pip not closing the coil and over charging the coil tha t smoked it