No Start

[tery]

i vote for pcm

pcm is my bet

 

[Rockledge]

Try grounding the FP Test Pin on the Self Test Connector located under the hood. The pump should run constantly.




The following are some FP circuit troubleshooting tips, complements of projectsho89 :

To troubleshoot, you will need a meter. If you don't have one, go get one, then continue to the next step.

Turn the ignition switch to RUN. Ground the FP TEST pin. This should energize the FP relay in the relay module, turning on the fuel pump in the tank.

If the pump is not running, proceed: Using meter, measure at pin 5 (PINK/BLACK) of the relay module. If measurement is battery voltage, go to the trunk and get access to the inertia switch. Measure both sides of the switch. If battery voltage is on both terminals, either there is a wiring fault to the pump or the pump is defective. If voltage is present on only one terminal, the switch is open. Either reset it or replace it if resetting it does not work.

If no voltage was measured at pin 5 earlier, ground and remove the jumper from the FP test pin several times while listening for any clicking from the relay module. If clicking is heard, either the relay module is defective or there is a wiring harness fault in the supply circuit to pin 12. If no clicking is heard, check the 60A fuse "COOLING FAN" in the engine compartment fuse box.

 

[Floman]

Ok
Got a chance to check one of the injectors.
Used test light to check for any illumination during cranking, there was not any sign of light.
I also used the test light to see if the was any power going to the red wire on the injector and there is power there.
So i guess if i am in need of a PCM/ECU?
Which one do i need or are they one in the same?
Next question is where is it located?
And last, what part number should i be looking for to replace it with?

Thanks

 

[rubydist]

so the red wire has power all the time that the pcm is powered up, and the other wire gets grounded by the pcm when it wants the injector to fire. so what I would do next is put my meter across those two terminals on the connector and see if it registers any voltage at all during cranking.

if not, then you have a pcm issue, or you have a crank sensor issue.

 

[tery]

here's an example of what the pcm/ccrm looks like.
http://www.ebay.com/sch/i.html?_kw=ccrm+ford+******
It is under the plastic cover over the radiator on the rightish side. Be careful when you screw the connector cable back in, Be sure it goes in straight or you can crack the connector. pcm...power control module ccrm constant control relay module...same item.. I believe the ECU is a totally different animal and quite a bit more expensive. Make sure you get the same code letter...J...M...D...whatever is on the one on the car now, or somethings don't work that it is supposed to control..

PS, ya wanna get addicted to these engines....????look at this one by IShodU
http://i163.photobucket.com/albums/t309/Ishodu/CarPictures/IntakeSigPic.jpg

 

[Rockledge]

....or you have a crank sensor issue.

Just so I follow along correctly....the crank sensor might be implicated because:

1. The fuel pump circuit "logic" depends on the PCM "seeing" a PIP signal during cranking, or

2. The PCM needs to see a certain amount of RPMs before it will re-energize the fuel pump (after the initial prime), or

3. Both 1 and 2.

4. Neither 1 nor 2.

:wave:

 

[tery]

floman...here's some good forum info for you

http://www.shoforum.com/showthread.php?t=75065

 

[rubydist]

not the fuel pump but the fuel injectors. the pcm needs to see a signal from the crank sensor to tell it that the engine is cranking over and to tell it when to fire both the spark and injector for each cylinder in turn. if there is no crank sensor pulse, then there is no spark and often no fuel being injected.

I have forgotten if the op said he confirmed there is spark or not. if there is spark, then I believe it is narrowed down to the pcm being sick.

 

[Floman]

There is spark!
So is the PCM and ccrm one in the same?

Thanks

 

[Rockledge]

So is the PCM and ccrm one in the same?

No, they are separate modules. In fact, the PCM is actually responsible for "telling" the CCRM what to do in some cases.

The CCRM is, more or less, a collection of individual relays in a single box that carry out the following four functions on the SHO:

1) EEC Power Switching

2) Fuel Pump Relay Switching

3) Cooling Fan Power Control

4) A/C Clutch Control

As tery noted above, the CCRM is located in the engine bay, underneath the plastic radiator cover on the right side).


The PCM, of course, is the overall "brain" of the vehicle, particularly with regard to engine management and control. Among the many things that a PCM does is, it controls the firing of the fuel injectors.

.

 

[tery]

ummmm, my bad, With what i have learned in the last 6 months, i thought they were the same item, As Ruby pointed out awhile back, you have to be a mechanic and a scientist to "know" the scope of these engines, I'm a newbie too, i just know that two of my four had a no start and both times it as the ccrm on top of the radiator rightish side... Guys...teach us...is the pcm, the one that is sitting vertical next to the ccrm, or is that the ECU...or is that the Dylithium Crystal Transporter module..)

 

[Floman]

Ok
I found the CCRM right by the radiator hose towards the driver side of the car. I am pretty sure this thing needs to be replaced. It is pretty beat up and rusted all around the case and on the bottom also.
So if anyone out there has a "M" code CCRM they want to sell for a reasonable price I am in need of one.
I would also like to know where the PCM is so I can check it out also.

Thanks

 

[Rockledge]

Ok

I would also like to know where the PCM is so I can check it out also.

Behind the glove box. Push in the side tabs to drop the box down.

 

[mphowington]

Remember the basics and vendors for ccrm

I assume you checked the fuel filter, right? If clogged, it would cause the same thing- and may (note the word may) explain the lower psi. I agree with the others- pump is working and you have spark- so you its either a sensor or something in the physical delivery system. Fuel filters are cheap, easy to put on, and readily available at most box stores. Also, easy to take off and test to see if the issue too. Since you can spray fluid and it starts- either something isnt telling the pump to pump the fuel or the fuel cant reach its destination. If you have already checked my apologies.

check RCM Automtive- they had some CCRMs the last time I checked as well as PCMs

http://www.rcmautomotive.com/id32.html

Also- SHOSource had the one I needed, when no one else did a while back (turns out- code was technically right but CCRM wasnt actually the problem). But- I dont think that would explain your current circumstances-so I wouldnt try that just yet- Id lean towards PCM- but thats just me.

hope that helps.

 

[Black91SHO]

Sorry. I think I used the wrong term. I said, ECU/PCM, but I meant the CCRM above the radiator. ECU's in the dash. CCRM is what's bad, as it appears you've discovered.

 

[tery]

where is the pcm??

 

[Black91SHO]

Now I'm getting confused...

 

[SHOdded]

PCM is in the glove box compartment, with the connector sticking through the firewall into the engine bay.

 

[Floman]

Thanks for all the help so far
I am in the process of trying to locate a
"M" ccrm for my car
As soon as I get one I will post results

Just to be clear, PCM and ECU on this car
Is one in the same, correct?

 

[Black91SHO]

Okay, I checked to get clarification. I see why I was getting confused. I haven't changed one of these in a while, and people are using a different acronym for some reason.

IRCM - Integrated Relay Control Module (above radiator)
ECU - Electronic Control Unit (AKA - The computer)
PCM - Powertrain Control Unit (AKA - The computer)

We don't typically use the term CCRM on the SHO. Just IRCM.

Hope this helps.