Fix a trouble code p0174 on a 1994 ford mustang

The standard OBD2 P0*** codes are very easy to find. Your can google

1999 Ford Mustang P0095 for exaple and get a full breakdown of the issue and the fix

https://www.google.com/search?q=ford+mustang+obd2+codes

also note you have a '1999 Ford Mustang GT' not a '99 mustang gt'. details matter to Mr Google to get best results :>D ..

https://www.youtube.com/watch?v=iikON1hBrro

here is a you tube video explaining the issue

This Mustang does have a computer..buy trhe Chilton manual or go to your local library and look it up.. If you are going to work on your car buy the book.. Its real easy tto check the codes.. but after that you need to know how to fix the problem. These Mustangs are really easy cars to work on.

Not sure, but all OBD-1 codes are two digit codes. Check this site/page to see if you are doing it right: http://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval
Check the egr valve operation-may need cleaning the passage of carbon deposits.

Start by checking for vacuum leaks, compression then a scan for fault codes. One of those should turn up a problem

This is a code for the evaporative system which includes a black plastic container in the front of the engine comopartment that has hoses going to the tank and the throtle body. When it isn't running the fumes from the tank accumulate in this charcoal filled container and when the engine starts, they are burned. Something is wrong with the vacuum or electric solonoid on the top of this container.

Ford OBD Diagnostic Trouble Codes

Fix the Ford P1233 FPDM Fuel No Start Problem Here's a fix for that no-start condition on 2004-2008 Ford trucks. The FPDM (fuel pressure driver module) usually shows up as a P1233 diagnostic trouble code (OBD-II) when the truck's codes are read. A Ford P1233 code is described as Fuel Pump Driver Module Offline or Fuel System Disabled or Offline. A search on Google for Ford P1233 shows that this P1233 DTC code is not limited to being a problem on just Ford trucks. Others with the Focus, Mustang, Town Car, etc. also experience this problem.
You may experience stalling, no-starts, random no-starts, or other potential symptoms. A quick search over at MotorcraftService.com (a Ford service web site), they offer the following possible causes if the P1233 code is triggered:

• Inertia fuel shutoff (IFS) switch needs to be reset.
• Open FPDM ground circuit
• Open circuit to FPDM PWR RLY
• Open FPDM PWR circuit
• Open or shorted FPM circuit (engine should start).
• Damaged IFS switch.http://www.fordf150.net/images/articles/fpdm4.jpg try link hope this helps it may be it would hate for you to change fuel pump and it not be fuel pump
  

check all ur fuses ! there is one that is blown! it gives power to the diagnostic connector!

If the only code 52 is flashing then system is ok and just needs to be cleared.Look behind the glove box and find the gray 2 wire connector.It will be on the left side behind the glove box and follow the proceedure below. Once a fault has been serviced, the associated diagnostic trouble code may be cleared from NVM. Only diagnostic trouble codes that the air bag diagnostic monitor sees as repaired or intermittent may be cleared (diagnostic trouble codes 52 and above). In no circumstances can hard fault conditions (diagnostic trouble codes 45 and below) be cleared.

1. Follow the diagnostic procedures as outlined to service the fault condition flashing on the air bag indicator.

1. Cycle the ignition switch to OFF and then to RUN.

1. Observe air bag indicator prove-out (six ±two seconds) followed by diagnostic trouble code (52-85) flashing completely one time.

1. Locate the Diagnostic Service Connector located underneath the glove compartment containing Circuits 631 (T/R) and 57 (BK).

1. Use a jumper wire to short Circuit 631 (T/R) to Circuit 57 (BK) or to another good ground.

1. Hold short until air bag diagnostic monitor tone sounds (approximately five seconds).

1. Release short on Circuit 631 (T/R) to Circuit 57 (BK). Diagnostic trouble code is now cleared from NVM. Next highest priority diagnostic trouble code stored in NVM (if one exists) will begin flashing