Hi I, have a 1997 ford ranger, when I start the truck it cut off immediately. I change the ICA ,air filter,fuel filter and clean the mac sensor and still no inprovement. Can any one help please?

 

Manual or automatic transmission?

When key is turned on does the "CEL"(check engine light) come on for a few seconds and then go off?

Try this:
Turn key on, count to 3 and turn key off(fuel pump runs for 2 seconds only, listen, you should hear it run)
Repeat this 3 times(fuel pump runs for 6 seconds more, this builds up fuel pressure)
Then try to start engine
If engine runs longer but still dies you have a fuel leak or faulty check valve in fuel tank.

If you can test fuel pressure it should be 65psi at the schrader valve on the fuel rail.

Other test to see if problem is fuel or spark would be to get some Starting Fluid(ether) and remove the air tube on the intake, have some one try to start engine while you spray starting fluid into the intake, if engine stays running while you spray but dies as soon as you stop spraying then you have a fuel problem.
If engine dies regardless of spray then spark is the problem.

Check if you have 12volts at one of the coils(center wire) when key is on.

The ignition switch under the steering column sends power out on different wires when key is turned to START or RUN(on)
If power is going out in START position but as soon as you release key to RUN position power could be cut, so engine dies.

 

Thanks RonD for the valuable info, the Cel light don't come on. the fuel pump is only two weeks old I was thinking bad throttle body.What you think?


Regards

Livingston

 

Throttle body??

Unless it is missing it wouldn't effect engine starting, if it was running rough then maybe a vacuum leak....in throttle body

You have an electrical(no spark) or a fuel problem from your description.

No CEL when you turn on the key, assuming it worked before, means computer is off and engine can't run with no computer, check fuses in engine fuse box.
And in cab fuse box.
PITA, but check each one

 

RonD thanks a million for all the info I , will check the coil and computer and ignition switch. one more thing RonD when I check the throttle body for power with the key on there was no power.

Reards

Livingston

 

Throttle body is a mechanical device:
Main air passage
throttle shaft and throttle plate
IAC air passage
throttle linkage

So not sure what electrical part you are referring to?

 

Have you checked Inertia Switch (or fuel shut-off or Fuel Pump Shut Off)? You can google for image. Should be located behind the passenger side kick panel

 

I think it could be the fuel pump of fuel regulator seems to be a fuel starvation problem.

 

Sonnyray thanks for the info.I will check that out now.

 

Rangergray thanks for info,I change fuel regulator, Aic, crank sensor fuel pump,fuel,air filter filter,timing belt the truck still wont stay start. I was told the 2.3l model is famous for stalling when start.