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[shep83]

I am certain the injectors are not firing.
What about the switch in the VAF??
Does it turn the power on or does it tell the ECM to fire the injectors??

I will do the trouble light test as well..

[Rocketman]

There's two parts inside the VAF - one tells the ECU how much air is coming in. The other turns the pump on/off.
Neither will keep the ECM from firing the injectors.

[shep83]

Back to the problem at hand.

I have just noticed that my check engine light doesn't come on when I turn the key on.

Does yours??

I have: OD, AIRBAG, BATTERY, FUEL
But no ENGINE???

[Rocketman]

Yes, the CEL should illuminate when the key is first turned on.

[shep83]

This CEL not being on makes me think that perhaps the new PCM isn't any good either..

I have 12V into the PCM..

I replaced the fuel pump just to rule out and now I have NO fuel pressure, I think I got a bad pump!
Is thiere any tricky Capri quirks to installing a fuel pump??

[blueamber]

I'm getting dizzy trying to keep up with this thread... did you ever try starting with the tps disconnected?  You never said...

Nothing tricky about fuel pump replacement, but I've always replaced the entire pump/sender assembly.

I could believe a new (Chinese) pump is bad... you did reconnect that chassis ground wire at the tank?

I don't want to believe 2 bad pcms, assuming your replacement is a used one.  Check that light bulb out...Chris

[shep83]

I'm getting dizzy too, and it's my thread..

The latest in the ongoing saga of my @#%$$#@ 94 Capri...
OH yea, I replaced TPS (no change)

After spending another day testing and reading,
I jumped the self diagnostic to ground to check the PCM and discovered that I don't have a CEL....
So I checked the fuse box, OK. checked power to PCM 12V at both pins,
cussed and scratched my head.
Decided to change the fuel pump because that's the only thing that I could actually find that wasn't working 100%.. (I had 30PSI at filter)
After I changed the fuel pump I GOT 0PSI
Figured I screwed something up so took it out took it apart and put it back in..(about 6 times)
Took pump back and told them it was no good and got another one and still 0PSI
Got extremely frustrated and sick of listening to the damn fan run (key was on)
so I banged the fan relay and the fan shut-off and I heard it!!!!!!!!!!
I heard a SSSSSSSSSSSSSSSSSSSS
Coming from the engine, I believe coming from the Fuel Pressure Reg.

My newest theory is that the old pump was barely hanging on with the pressure leak
but it wasn't enough to fire the injectors, when I replaced pump the pressure increase finished off the FPR and now it can't hold anything....

Getting new FPR tonight to test theory.....(Oh and hopefully the CEL is just a bad bulb)

[Rocketman]

If you use a pair of vice grips on the rubber portion of the return line, you can clamp that  & check to see if you have pressure. Even if the FPR was wide open, there is still a restriction because of its design & should show at least a few PSI.

How are you testing the pump? Cranking the engine? Pump test jumper on the firewall? Applying power directly under the seat?

The CEL is likely a burnt out bulb in the cluster. You can jumper a pin directly to the ECU and rig up your own light temporarily. Here's the pinout:

[shep83]

I've jumpered the firewall plug.

When I removed the old pump and pulled the motor out of the carriage the O ring fell out so I never actually saw the placement of the O ring and there is a plastic "hat" shaped cap.
You don't know the correct placement of these do you?
Those are the only things that I could have screwed up on the fuel pump. the rest is very straight forward...
I'm not sure what you are suggesting with the chart??

I'm going to owe you a 12 pack when this is over

[Rocketman]

Re: the Chart: On the ECU, if you tap into the plug on terminal 1A and run it to a 12V light bulb, and ground the other half - you should get a functioning temporary CEL to run tests with, without having to pull the gauge cluster apart. You could even use your multimeter

Was it a big fat O-ring with a ~1/4" ID? if so thats what seals the pump output into the housing.

That goes inside the "bell" that the pump outlet slides into, and provides the seal. Without that you won't get any pressure.

[shep83]

Yea, I put the O ring thingy in there, but there is also the little hat shaped thingy and I wasn't sure about which came first, since I didn't have any fuel pressure I was doubting myself.

[Rocketman]

I think the hat-thing helps keep the O-Ring up in there.

Did you re-use the old o-ring? it's a good idea to replace it, most pumps don't come with new ones. I cannot remember where I got mine

[shep83]

It came with a bunch of extras for different cars, new ring was included.
Do you think that FPR will fix it???
Now I just have to take back the PCM I bought and convince them I never installed it

[shep83]

Well, still no go!
Installed new Fuel Pressure Reg. (Thanks Rocketman)
Didn't do shit!!!

I guess I have to figure out how to check the timing (never done it before)
I'm absolutely stumped at this point...

It still sounds like the fuel is running right thru it..
Is it possible that there isn't enough gas to prime the new fuel filter??
It has about 1/8 tank....
I'm open to suggestions.. anyone want to buy a 94??

[blueamber]

Like rocket says, it's hard to fix things like this, I need longer arms to reach SW Florida...

Just to clarify, when you spray fluid into the intake, does the car run OK for a few seconds, or does it just act like it fires occasionally?  Using starter fluid is best here, making sure you get a decent seal from the VAF to the throttle body (you don't need to tighten everything up after spraying)

I think running OK on starter fluid for a few seconds means a fuel issue of some sort, either no (or insufficient) fuel to the injectors, or no injector turn on.  Firing occasionally on starter fluid, trying to start, and not running normally, to me, points to a NOT fuel issue, like timing, bad compression, weak spark, lots of things...Chris