Crank no start 1992 Mustang GT - ECU Repaired

[SJenkins18]

So the car sat for about a year and ran perfectly fine when I parked it. Finally got back around to working on it and when I went to start it it wouldn’t start. I replaced the battery, battery cables, ignition coil, distributor cap, rotor, and the TFI module. It has 36-39 psi fuel pressure at the schrader valve, it has spark, I can hear the fuel pump running when I turn key on, and there was no light or pulse when tested with noid light. I’m stuck and don’t know where to check next.

 

[89ripper]

Before we go any further with this, what did you do with the gas that sat in your tank, did you drain it or leave it in there?

 

[AeroCoupe]

Have you pulled codes?

 

[SJenkins18]

Before we go any further with this, what did you do with the gas that sat in your tank, did you drain it or leave it in there?

Tank was emptied before it sat. A fresh 5 gallons was put in the tank a week ago.

 

[SJenkins18]

Have you pulled codes?

No I haven’t checked for any codes

 

[89ripper]

Tank was emptied before it sat. A fresh 5 gallons was put in the tank a week ago.

Ok good. See post 3

B

Electrical Thread 'No Crank, No Start'

Jun 7, 2017

Hi Everyone-

I replaced TFI, Coil, Wires, and Plugs last week, and I now have a no crank and no start issue. I also replaced the transmission harness with an aftermarket one from LMR,as the car was previously a 4 cylinder automatic and it had the AOD harness still in it, and up until now none of the 3 connections at the transmission were connected (NSS, Reverse Light, and VSS).

I also swapped the O2 harness to the correct manual O2 harness, and prior to making it live I checked for no power at pin 46 (however I did this a few weeks ago and prior to adding the transmission harness)...

• Bb1100yankees
• Replies: 10
• Forum: Fox 5.0 Mustang Tech

 

[89ripper]

Scratch that...check this one instead for a cranks ok no start

Thread 'Cranks OK, but No Start Checklist for Fuel Injected Mustangs'

May 22, 2006

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 your way down. Jumping around will possibly cause you to miss just what you need to see to find and fix the problem. Don’t skip any steps because the next step depends on the last step working correctly.

Revised 26-Jul-2017 to add fuse link diagram.

All text applies to...

• jrichker
• Replies: 93
• Forum: Fox 5.0 Mustang Tech

• 

 

[Mindseye007]

So the car sat for about a year and ran perfectly fine when I parked it. Finally got back around to working on it and when I went to start it it wouldn’t start. I replaced the battery, battery cables, ignition coil, distributor cap, rotor, and the TFI module. It has 36-39 psi fuel pressure at the schrader valve, it has spark, I can hear the fuel pump running when I turn key on, and there was no light or pulse when tested with noid light. I’m stuck and don’t know where to check next.

check your current TFI Module, by buying this off Ebay https://www.ebay.ca/itm/25553718100...pid=5335821607&customid=&toolid=10001&mkevt=1 don't for get to buy a 9 Volt Battery

Buy a new TFI module from Rockauto.

Motorcraft https://www.rockauto.com/en/moreinfo.php?pk=5434788&cc=1134010&pt=7172&jsn=17

STANDARD MOTOR PRODUCTS LX223 https://www.rockauto.com/en/moreinfo.php?pk=49708&cc=1134010&pt=7172&jsn=932

.

you can relocate your new TFI module with this https://www.mccullyracingmotors.com/ best one out there.

get some extra Arctic Silver 5 thermal paste https://www.ebay.ca/itm/16642480345...pid=5335821607&customid=&toolid=10001&mkevt=1

after its all installed your stang will fire right up..

also if you ever need your ECU repaired this place is awesome and the best place to get it fixed at.

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECU Repair Service

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECUEngine Computer Repair ServicePlease fill out the R&R form here once you've placed your order.A Trusted Product with LIFETIME WARRANTY QUICK TURN AROUND TIMEDomestic and International Shipping available! Our Team is Available Monday - Friday 9am to 5pm...

www.theecuexchange.com

 

[General karthief]

From the new parts, your diagnostic test of the injector pulse, or lack there of, we do need to know if the fuel pump primes, turn key on pump should run for a couple seconds the stop, also see if the computer will spit out codes,

 

[SJenkins18]

TFI Module 100% cooked , get a new one from Rockauto.

Motorcraft https://www.rockauto.com/en/moreinfo.php?pk=5434788&cc=1134010&pt=7172&jsn=17

STANDARD MOTOR PRODUCTS LX223 https://www.rockauto.com/en/moreinfo.php?pk=49708&cc=1134010&pt=7172&jsn=932

check your current TFI Module, by buying this off Ebay https://www.ebay.ca/itm/25553718100...pid=5335821607&customid=&toolid=10001&mkevt=1 don't for get to buy a 9 Volt Battery.

you can relocate your new TFI module with this https://www.mccullyracingmotors.com/ best one out there.

get some extra Arctic Silver 5 thermal paste https://www.ebay.ca/itm/16642480345...pid=5335821607&customid=&toolid=10001&mkevt=1

after its all installed your stang will fire right up..

also if you ever need your ECU repaired this place is awesome and the best place to get it fixed at.

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECU Repair Service

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECUEngine Computer Repair ServicePlease fill out the R&R form here once you've placed your order.A Trusted Product with LIFETIME WARRANTY QUICK TURN AROUND TIMEDomestic and International Shipping available! Our Team is Available Monday - Friday 9am to 5pm...

www.theecuexchange.com

TFI Module 100% cooked , get a new one from Rockauto.

Motorcraft https://www.rockauto.com/en/moreinfo.php?pk=5434788&cc=1134010&pt=7172&jsn=17

STANDARD MOTOR PRODUCTS LX223 https://www.rockauto.com/en/moreinfo.php?pk=49708&cc=1134010&pt=7172&jsn=932

check your current TFI Module, by buying this off Ebay https://www.ebay.ca/itm/25553718100...pid=5335821607&customid=&toolid=10001&mkevt=1 don't for get to buy a 9 Volt Battery.

you can relocate your new TFI module with this https://www.mccullyracingmotors.com/ best one out there.

get some extra Arctic Silver 5 thermal paste https://www.ebay.ca/itm/16642480345...pid=5335821607&customid=&toolid=10001&mkevt=1

after its all installed your stang will fire right up..

also if you ever need your ECU repaired this place is awesome and the best place to get it fixed at.

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECU Repair Service

Ford Mustang 5.0 A9L A9P C3W A3M X3Z ECUEngine Computer Repair ServicePlease fill out the R&R form here once you've placed your order.A Trusted Product with LIFETIME WARRANTY QUICK TURN AROUND TIMEDomestic and International Shipping available! Our Team is Available Monday - Friday 9am to 5pm...

www.theecuexchange.com

I figured out that the ECU went bad. When I turned the key to the on position I could hear the fuel pump continuously priming every time I turned the key. Shipped it out to ECU Exchange and they repaired it for me. They told me that the power supply wasn’t creating enough voltage and the capacitors had leaked. The car fired right up after they sent it back to me.

From the new parts, your diagnostic test of the injector pulse, or lack there of, we do need to know if the fuel pump primes, turn key on pump should run for a couple seconds the stop, also see if the computer will spit out codes,

 

[General karthief]

So it's fixed?

 

[SJenkins18]

So it's fixed?

Yes it’s fixed.

 

[Mindseye007]

Yes it’s fixed.

Glad you fixed it . Now go take her for a nice rip up your street. Lol

 

[Noobz347]

@General karthief (and staff)

I want to start tagging these threads since it happens so often anymore. Add something to the title like I did above and update the thread tags with "ECUExchange", so we can find them again.