Engine No injector pulse!

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Britt vanegas

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Feb 26, 2023

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#1

• Feb 26, 2023

• #1

1986 5.0 has spark but no injector pulse. Has 12 volts on red wire on injectors. Tps is 1 volt closed. Tried changing computer = nothing. Tried new Distributor nothing.
Fuel pump is brand new tank is brand new. Car has fuel pressure. Car has gas. Tried noid light on injector and got nothing. Any help would be appreciated!!!

 

B

Britt vanegas

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Feb 26, 2023

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#2

• Feb 26, 2023

• #2

Car will run with starter fluid!

 

Bullitt347

I have been doing it wrong this whole time

15 Year Member

Mar 23, 2007

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Feb 26, 2023

#3

• Feb 26, 2023

• #3

Check for power to the Fuel Injectors. They should be hot anytime the key is on. The PCM provides the ground. If the injectors have power, then something is keeping the PCM from providing the ground, such as a PIP signal ect. If the injectors do not have power with key on, then there is either a blown fuse or bad wire in the circuit.

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

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Feb 26, 2023

#4

• Feb 26, 2023

• #4

When you swapped distributors did you use the same TFI chip or a different one? May have a broken wire between the distributor and ECU.

 

General karthief

wonder how much it would cost to ship you a pair

5 Year Member

Aug 25, 2016

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polk county florida

Feb 26, 2023

#5

• Feb 26, 2023

• #5

See #5 on this list.

Cranks OK, but No Start Checklist for Fuel Injected Mustangs

Cranks OK, but No Start Checklist for Fuel Injected 5.0 Mustangs model years 1986-1995 A word about this checklist before you start: it is arranged in a specific order to put the most likely failure items first. That will save you time, energy and money. Start at the top of the list and work...

www.stangnet.com

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

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Feb 27, 2023

#6

• Feb 27, 2023

• #6

Saw this here before and it was related to a wire behind the drivers kick panel. Not sure if it's your issue. Green with yellow stripe wire. This is someone else's photo from a previous thread.

 

B

Britt vanegas

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Feb 26, 2023

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Feb 27, 2023

#7

• Feb 27, 2023

• #7

Bullitt347 said:

Check for power to the Fuel Injectors. They should be hot anytime the key is on. The PCM provides the ground. If the injectors have power, then something is keeping the PCM from providing the ground, such as a PIP signal ect. If the injectors do not have power with key on, then there is either a blown fuse or bad wire in the circuit.

Click to expand...

The injectors have 12 volt on the red wire to all injectors.

 

B

Britt vanegas

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#8

• Feb 27, 2023

• #8

AeroCoupe said:

When you swapped distributors did you use the same TFI chip or a different one? May have a broken wire between the distributor and ECU.

Click to expand...

 

B

Britt vanegas

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Feb 26, 2023

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#9

• Feb 27, 2023

• #9

The new distributor came up with a new Module I used a new one. Is there any way to check the pIp signal with a multimeter or a test light.

 

B

Britt vanegas

New Member

Feb 26, 2023

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#10

• Feb 27, 2023

• #10

General karthief said:

See #5 on this list.

Cranks OK, but No Start Checklist for Fuel Injected Mustangs

Cranks OK, but No Start Checklist for Fuel Injected 5.0 Mustangs model years 1986-1995 A word about this checklist before you start: it is arranged in a specific order to put the most likely failure items first. That will save you time, energy and money. Start at the top of the list and work...

www.stangnet.com

Click to expand...

still no injector pulse

 

B

Britt vanegas

New Member

Feb 26, 2023

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#11

• Feb 27, 2023

• #11

Still no injector pulse

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

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Claremore, OK

Feb 27, 2023

#12

• Feb 27, 2023

• #12

In the crank but no start list 1 B.) and 1 C.) are the tests for PIP and TFI.

 

B

Bird76Mojo

5 Year Member

Jul 12, 2018

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Central Illinois

Mar 4, 2023

#13

• Mar 4, 2023

• #13

Is the TFI module black or grey? Does it match your old one?

This video helped me solve my PIP issue. Also, relocate your TFI module asap.

 

Reactions: TwoRockTwo

J

JMG9350

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May 9, 2022

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Wyoming

Mar 5, 2023

#14

• Mar 5, 2023

• #14

Britt vanegas said:

Still no injector pulse

Click to expand...

Did you follow the steps in order or just jump to the injector pulse test? If you go through the checklist completely and in order you will find your problem.