davemurray

Hi:Guys
I have a 1989 Gt and I'm having problems starting my car.
Here's my diagnosis:
First I thought it was the fuel pump that wasn't delivering proper pressure to the lines, so I bought a new BBK pump and a new fuel filter, but didn't solve the problem then I look for electrical problems and found that the starter had a short circuit inside it, I changed it and I still had the same problem.I've changed everything from spark plugs,cables,solenoids,battery etc.. and nothing happens. Now I check the fuel lines and they have pressure but no start. I poured some gas through the intake and it started good for 5 secs then it stalled, so I assume that the engine is not the problem, and it must be something related to delivering fuel to the engine. My last option is the fuel injectors wich probably are damaged. I've used injector cleaner before and it didn't worked. I checked the voltage of each injector and they read from 1.5 to 2.0 volts each, is that ok?
I would like some advice from you guys before I get my new injectors.

Any help would be greatly apreciated!

roundman

check to see if you're getting fuel pressure to the injectors, there is a Schrader valve on the main fuel line that will allow you to connect a pressure gauge here to check for fuel pressure. should be 35-45 psi. if no pressure, check the reset button for the fuel pump located in the rear of the car and see if it has tripped. if this isn't the problems, check the connection under the driver's seat for the fuel pump relay and make sure it is tight. are you getting proper voltage to the fuel pump with the key on???? make sure you have a good ground connection for the pump too.
since the engine will run some with gas in it, the problem must be fuel related. or it could be a bad ignition switch which on some models Ford had a recall for.

RUSH2112

I had a similar problem 2 weeks ago. My car would turn over and start, but would immediately shutdown.
I could sometimes keep it going by pumping the gas pedal, but if I stopped then it shutdown.
I replaced the IAC, TPS, Coil, and fuel filter before I finally gave up and towed it to Ford.
They found the Strator and TMI module in the distributor to be the problem. Hope this helps.

1990mustanggt

Well they pretty much said what I was going to say. The first thing I would do is test that fuel pressure at the rails.

Dearborn5.0

does anyone have a pic of where that schrader valve is?

or a pic of the relay on a working 5.0?

90LX50

It's on the passenger side of the engine near the front corner of the valve cover behind the alternator.

Follow the fuel rail, you'll find it

Dbeck002

here it is

davemurray

I bought new 19 lbs injectors but it still cranks but doesnt start.
I checked the fuel lines and they have pressure.I checked the voltage on the fuel pump and it read 12 volts so I guess its good,also checked the fuel pump relay as for the bad ignition switch I'm not sure is that because it cranks ok but doesn't start.

What is the strator and TMI module?
How can I know if its damaged!


Need heeeeeeelp!

slo93aod

did you check the fuel pressure yet with a gauge?

davemurray

I bought one for $25 in a race shop!
and it stays at 0 psi! but when I take it out it has a lot pressure!
What could it be?