ProFlo4 help

[Big Ben]

I am getting no spark, I have 12v to the coil ,timing light connected and it never flashes. Fuel pump comes on engine turns over but no sign of spark. I just got my Distributor back from Edelbrock today for this same issue. They said the distributor was fine and sent the same one back. They did send a new Map sensor and ECU. Im sceptical they even tested the distributor since when I shipped it I took my gear off and put the original one on it and halfway put the roll pin in it and that's how it looked when it came back to me.

I have the pink wire connected to the white black from my painless harness labeled carb choke it's 12v key on and starting
Relay connected to my in tank fuel pump
I have the MSB 8202 coil which is on the approved list from Edelbrock

Any help will be greatly appreciated

 

[DirtDonk]

Doesn’t the pro flow control the ignition? Aren’t there wires from the computer to the ignition?
Or is that just optional?

 

[Johnnyb]

Boy, the ProFlo4 manual online is better now than it was when I installed mine! https://edelbrock-instructions-v1.s3.amazonaws.com/edelbrock/35910.pdf

Is there voltage at Coil + when the ignition is on? This system should be switched on the negative side, so the + side should have voltage anytime the ignition is on. I always like to disconnect both wires from the coil and testing each, in case of reverse polarity or complete short.

-JB

 

[Soylent]

Saving this thread for possible headache this summer.

 

[Wild horse 75]

Are you seeing an RPM signal during cranking? Are you sure the coil is good? New doesn’t always mean good. Testing with a known good coil is always a good idea. If you don’t have a known good coil you can force this one to make a spark by pretending to be a set of points and using a spark tester on the coil lead. If you’re not seeing an RPM signal during cranking I would suspect the distributor pick up is bad. You may need to find someone local with a distributor machine that can bench test it. Not saying Edelbrock didn’t test it but I’ve had other companies I send stuff to send it back as good then after more testing on my end it points to a bad module or something and I go buy a replacement and low and behold it works even though it “tested” good by the manufacturer.

 

[Johnnyb]

Are you seeing an RPM signal during cranking? Are you sure the coil is good? New doesn’t always mean good. Testing with a known good coil is always a good idea. If you don’t have a known good coil you can force this one to make a spark by pretending to be a set of points and using a spark tester on the coil lead. If you’re not seeing an RPM signal during cranking I would suspect the distributor pick up is bad. You may need to find someone local with a distributor machine that can bench test it. Not saying Edelbrock didn’t test it but I’ve had other companies I send stuff to send it back as good then after more testing on my end it points to a bad module or something and I go buy a replacement and low and behold it works even though it “tested” good by the manufacturer.

It's a hall effect sensor. I think there might actually be two of them, but should be easy enough to test there are a couple YouTube videos.
The coil doesn't actually come with the proflo 4, but they have a fairly strict list of compatible coils, not all work or are supported.

 

[bronco italiano]

Are you seeing an RPM signal during cranking? Are you sure the coil is good? New doesn’t always mean good. Testing with a known good coil is always a good idea. If you don’t have a known good coil you can force this one to make a spark by pretending to be a set of points and using a spark tester on the coil lead. If you’re not seeing an RPM signal during cranking I would suspect the distributor pick up is bad. You may need to find someone local with a distributor machine that can bench test it. Not saying Edelbrock didn’t test it but I’ve had other companies I send stuff to send it back as good then after more testing on my end it points to a bad module or something and I go buy a replacement and low and behold it works even though it “tested” good by the manufacturer.

Good idea. I had a Pertronix III Distributor for my VW bus and it went from running fine (with a Bosch 009/points) to running on 1 cylinder. Sent it to pertronix and they said it tested fine, I sent them video of the 009 and then their product. Pertonix sent it to their engineering, said it was fine but to use a regular ohm coil instead of the one they recommend for the unit. It has sat in the original box ever since.

 

[73azbronco]

so doesn't this come with a tuner app etuner4??. I mean thats a big reason to go new stuff it should say whats not computing.

Have you triple checked initial timing with TDC, plug wires, etc?

 

[Big Ben]

My issue was my battery. I had my fluke on the battery when cranking and it was dropping down to 8.5 volts on cranking. It was a brand new battery but apparently not a good one. I got another battery in it this morning and was able to actually get it to start. Then was able to get it timed and running well.

If you get one of these ignore the instructions where it says you don't need a relay for your fuel if it draws less than 10A. That same wire that feeds the fuel pump also goes to the O2 sensor, coil,and the injectors.

I still need to play with it some more to get it fine tuned.

I appreciate all of your responses.

 

[EB 66]

Ok, I don’t see where you answered if you show RPM while cranking the motor over. That is the first thing to check! If it is not showing RPM then the hall sensor is bad and that require a new distributor. Second get yourself a remote start and see if runs then. I keen remote start that you hook up and push the button while under the hood. Report back after that. These are both issues I had. I couldn’t get mine to start at first then shortly after had issues also. Got it dialed in now for over 8,000 miles and runs like a top!

 

[73azbronco]

third get epro4 APP

 

[okie4570]

Ok, I don’t see where you answered if you show RPM while cranking the motor over. That is the first thing to check! If it is not showing RPM then the hall sensor is bad and that require a new distributor. Second get yourself a remote start and see if runs then. I keen remote start that you hook up and push the button while under the hood. Report back after that. These are both issues I had. I couldn’t get mine to start at first then shortly after had issues also. Got it dialed in now for over 8,000 miles and runs like a top!

It was the battery, post right above yours.

 

[Big Ben]

Ok, I don’t see where you answered if you show RPM while cranking the motor over. That is the first thing to check! If it is not showing RPM then the hall sensor is bad and that require a new distributor. Second get yourself a remote start and see if runs then. I keen remote start that you hook up and push the button while under the hood. Report back after that. These are both issues I had. I couldn’t get mine to start at first then shortly after had issues also. Got it dialed in now for over 8,000 miles and runs like a top!

I didn't have RPM on the display

 

[EB 66]

I didn't have RPM on the display

Two things then, one your shear pin on the distributor gear is sheered and the gear isn’t turning the shaft or you distributors hall sensor is out. If the hall sensor is out you need a whole new distributor. Edelbrock doesn’t sell it any other way. Hopefully it’s still under warranty or it will set you back about $450. I would pull the distributor and see if the pin is sheered first thing.