347 won't fire

[95riosnake]

Ok so about a month and a half ago I was hanging some fluorescent lights in my garage so I pulled the cobra out into the driveway. It started effortlessly as always. It sat out for about 4 hours and when I went to pull it back in, it wouldn't fire. We ended up having to push it back in (not an easy task with a sloped driveway...) It was in the 30s that day, I have no idea how cold could have caused this problem but I'm running out of ideas.

It is getting fuel (you can smell it coming out of the exhaust when it is cranking) and cranks fine. I did a lot of online research and found that it was most likely one of two things: the distributor or the TFI module. I first replaced the distributor with a brand new Accel BilliTech, the car still wouldn't fire. I just put in a new TFI module, and still no go.

The car has a brand new MSD coil, new Taylor wires, and new spark plugs. I also replaced the CCRM module this past summer when it wasn't kicking the cooling fan on.

I am completely out of ideas as to what is wrong with this thing. This motor has less than 1000 miles on it, EVERYTHING is new, the only reused things were the alternator and the distributor (which is now replaced). Any help is appreciated. I'd love to get the codes scanned but I can't exactly get it to anyone with a scan tool. I don't want to keep just throwing parts at it.

[Silverhatch]

Did you check for spark? Could be one of the new parts took a crap.

[bgblockelcamino]

i was thinking spark plugs could be fouled? being cold and rich dumped fuel never had time to clean up since wasn't warmed up

[John4cam]

did you install the new dizzy correctly? something you could double check. Mabey a bad computer?

[White5.0]

did you install the new dizzy correctly? something you could double check. Mabey a bad computer?

x2, not to insult your intelligence but its very easy to install the dizzy wrong....

also pull some spark plugs and check them.

[vitaleffects626]

Msd coil is my bet

[gmkillr]

Distributor isnt in time correctly

Coil is bad

CCRM is bad

Fouled out plugs


Have someone crank the car while you pull off the wire that runs from the coil to the distributor to see if you have juice from the coil to the distributor. Just hold it an inch or so up off of the terminal to see if you see the spark.

Run your #1 cylinder to tdc & then install your distributor with the rotor aiming at the #1 termainal on the cap.

After doing those 2 things then install brand new spark plugs & try again.

[95riosnake]

Distributor isnt in time correctly

Coil is bad

CCRM is bad

Fouled out plugs


Have someone crank the car while you pull off the wire that runs from the coil to the distributor to see if you have juice from the coil to the distributor. Just hold it an inch or so up off of the terminal to see if you see the spark.

Run your #1 cylinder to tdc & then install your distributor with the rotor aiming at the #1 termainal on the cap.

After doing those 2 things then install brand new spark plugs & try again.

The distributor is installed correctly, me and ray (stangman701) made sure of that last weekend. Did the method you mentioned of bringing #1 to TDC on the compression stroke then installed the dizzy with the rotor pointing straight back.

Put a new set of plugs in a half hour ago, no dice. Didn't crank it much to avoid fouling them.

Gonna check the coil and ccrm module tomorrow afternoon. The ccrm I put in this summer was remanufactured so it's a possibility it could be faulty.

[gmkillr]

The distributor is installed correctly, me and ray (stangman701) made sure of that last weekend. Did the method you mentioned of bringing #1 to TDC on the compression stroke then installed the dizzy with the rotor pointing straight back.

Put a new set of plugs in a half hour ago, no dice. Didn't crank it much to avoid fouling them.

Gonna check the coil and ccrm module tomorrow afternoon. The ccrm I put in this summer was remanufactured so it's a possibility it could be faulty.

Ok, sounds good....try the coil trick I mentioned to see if your getting spark to the distributor. If you are then I would look at borrowing someones ccrm & giving that a try.

How much fuel pressure are you running?

[TJH64]

Check the groundstrap off the engine. Make sure you have good contact on either ends.

[95riosnake]

Well I checked the ground strap and it has good contact at both ends.

I tested the coil by holding the coil wire up off the contact on the cap while we cranked the engine and there was no arc, so I put the stock coil on and still nothing. That leads me to believe the coil isn't getting power.

If I have the key turned on and rotate the dizzy, I can hear the injectors cycle also, this would mean the dizzy is good, right?

I guess I will try swapping in a different ccrm, could the ccrm be causing the coil to not get power?

[gmkillr]

Well I checked the ground strap and it has good contact at both ends.

I tested the coil by holding the coil wire up off the contact on the cap while we cranked the engine and there was no arc, so I put the stock coil on and still nothing. That leads me to believe the coil isn't getting power.

If I have the key turned on and rotate the dizzy, I can hear the injectors cycle also, this would mean the dizzy is good, right?

I guess I will try swapping in a different ccrm, could the ccrm be causing the coil to not get power?

Check all of your harness's to see if there all have good connections (plugged in tight).

Try borrowing someone on here (local) ccrm before you go buying a new one.

[95riosnake]

Check all of your harness's to see if there all have good connections (plugged in tight).

Try borrowing someone on here (local) ccrm before you go buying a new one.

I'm going to go over every connection I can find, I almost guarantee this will end up being something stupid causing the engine to not fire up.

I don't know of anyone local with a 94-95 to borrow a CCRM from unfortunately, but maybe I'll find one to borrow. Ray had his white GT for a couple months but sold it, that would have worked out pretty nicely but oh well.

[biminiLX]

Its sad but I have no idea what a CCRM is?
From the story that it started and ran normally then just did nothing, I would put money on electronics, basically all the things mentioned already, maybe it is this mysterious CCRM :)
Good luck Dan.
-J

[95riosnake]

Its sad but I have no idea what a CCRM is?
From the story that it started and ran normally then just did nothing, I would put money on electronics, basically all the things mentioned already, maybe it is this mysterious CCRM :)
Good luck Dan.
-J

The CCRM is a module mounted to the back of the overflow bottle bracket on the radiator. It controls the cooling fan, ignition, and (I think) fuel injection to some extent. You can see it below (has a bunch of wires coming out of it).

http://t3.gstatic.com/images?q=tbn:ANd9GcSyFH0pdShYsoWSBf7Tz1xM89Qaob-eVZf9qsMqHSr6D3sUtSPx&t=1

I've already replaced it this past summer but since its a reman. I have my doubts about it.

Side note, I picked up a fuel pressure tester that threads onto the schrader valve on my fuel rail, gonna hook that up tonight and see what kind of fuel pressure I'm getting, so hopefully I'll be able to rule out fuel delivery. I can smell fuel, but that doesn't necessarily mean I'm getting enough.

[gmkillr]

Im not sure where you live now but theres quite a few 94-95 guys around. If you ever down my way you can borrow mine for a few days to see if thats it.

How did you set your fuel pressure before if you didnt have a fuel pressure gauge?

[Killercanary]

Do you have an MSD ignition? If so have you bypassed it?

[95riosnake]

Im not sure where you live now but theres quite a few 94-95 guys around. If you ever down my way you can borrow mine for a few days to see if thats it.

How did you set your fuel pressure before if you didnt have a fuel pressure gauge?

I didn't set the fuel pressure (unless that is done while dyno tuning). It has a walbro 255 with stock rails and 30lb injectors.


Do you have an MSD ignition? If so have you bypassed it?

I don't have an MSD box, just coil. I couldn't find anything to show me how an MSD box would benefit my combo enough to be worth buying.

[95riosnake]

Oh and Rob I live in Shaler now, off the Etna exit on 28. If I need to borrow a CCRM and can't find a closer one I might take you up on that offer.

[blizzard]

quick read with links and pics, before you go ruinin' someone elses too haha :o

http://www.allfordmustangs.com/forums/2-3l-tech/239205-1993-mustang-lx-fried-constant-control-relay-module.html

[95riosnake]

Thanks for the link blizzard, I'll pull my ccrm and open it up to see if anything is fried.

Got too busy with other crap tonight to work on the car :(

Guess it's good the car can't be driven till April haha