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EBL SFI-6 Questions and Info

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EBL SFI-6 Questions and Info

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Old 08-10-2017, 05:17 PM
  #51  
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Re: EBL SFI-6 Questions and Info

Ok, copy that. I am running the stock BFR GN 200-4r. How does the ebl know what gear I'm in?

I'll dial the main SA table in closer then to where I am looking to be, then us that the to pull timing from 3rd 4th.

Thank you.
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Old 08-11-2017, 07:05 AM
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Re: EBL SFI-6 Questions and Info

If the gear detection works in a similar fashion to what the EBL Flash does, it uses a table with gear ratios to determine transmission gear by engine rpm and vehicle speed.
This is also why I'm not quite sure the mentioned TTA 200R4 actually has a need for 3rd and 4th switches?
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Old 08-11-2017, 08:30 AM
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Re: EBL SFI-6 Questions and Info

Originally Posted by ownor View Post
If the gear detection works in a similar fashion to what the EBL Flash does, it uses a table with gear ratios to determine transmission gear by engine rpm and vehicle speed.
This is also why I'm not quite sure the mentioned TTA 200R4 actually has a need for 3rd and 4th switches?
Hmm, man I am rusty, haha, I didn't remember that in my EBL Classic. I figured something like that would have to be in there.

when I get home today I'll take a look back in the bin.
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Old 08-11-2017, 09:42 AM
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Re: EBL SFI-6 Questions and Info

The NV gear ratio table is for stick shift transmissions. With an unlocked torque converter that doesn't work.

> How does the ebl know what gear I'm in?

With automatics there is one or two pressure switches. The 700R4 in later years has one for 4th gear. The turbo cars that used the 200-4R has not only the 4th gear switch it also has a 3rd gear switch.

So the ECM knows P/N, drive (R, 1st or 2nd), then 3rd gear, and 4th gear.

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Old 08-11-2017, 12:33 PM
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Re: EBL SFI-6 Questions and Info

Originally Posted by RBob View Post
The NV gear ratio table is for stick shift transmissions. With an unlocked torque converter that doesn't work.

> How does the ebl know what gear I'm in?

With automatics there is one or two pressure switches. The 700R4 in later years has one for 4th gear. The turbo cars that used the 200-4R has not only the 4th gear switch it also has a 3rd gear switch.

So the ECM knows P/N, drive (R, 1st or 2nd), then 3rd gear, and 4th gear.

RBob.
Ok, thanks for clarifying. I just don't remember pressure switches, just the tcc solenoid. Man memory stinks.
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Old 08-18-2017, 03:22 AM
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Re: EBL SFI-6 Questions and Info

See, I was wrong anyways haha. Good explanation by RBob as always..
Makes sense to have 3rd & 4th gear switches with the turbo cars too I guess
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Old 08-25-2017, 12:00 PM
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Re: EBL SFI-6 Questions and Info

The car has been in the garage parked, and I've been traveling for the Uncle, so no progress really. I did however start fabricating the brackets for the nitrous solenoids.
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Old 04-11-2018, 07:17 PM
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Re: EBL SFI-6 Questions and Info

New season, new questions. Finally getting the alky installed, and the alky test/prime function is not working. Is there something I am missing? Im using the Chrysler fan relay like Rbob suggested some time ago, got power to it, and ground. The test button is momentarily push to ground like I saw in the schematic.

Last edited by liquidh8; 04-11-2018 at 09:00 PM.
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Old 04-12-2018, 09:41 AM
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Re: EBL SFI-6 Questions and Info

There are a lot of easy ways for the prime to fail. Engine is required to be running, make sure there is a duty cycle in the ALKY - Prime parameter. Check that prime input pin D10 is at 12 volts, then goes to ground when the button is pushed.

Can look at a dump of a data log for the commanded duty cycle.

If you set the prime DC% to 50 (%). Should see about 6 volts on the ECM output when it goes active (pin C3 at the ECM, pin 2 at the relay). Note that the relay needs to be connected to see this.

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Old 04-12-2018, 09:55 AM
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Re: EBL SFI-6 Questions and Info

RBob, that's perfect. One thing I didn't have was the engine running, I just had the key on. I do have some DC in the alky-Prime table, but not 50%.

The test readings are something I hope you would Supply, so I can go right to pin D10 and check for 12 volts. I do know that the switch has got the good ground. I am assuming that D10 will only have 12 volts on it when the vehicle is running, not key on engine off.
i can backprobe the relay to ensure I have voltage there when the prime button is pressed.

Now, a question, if there isn't 12vdc at pin D10, what could be the problem? I haven't checked yet, I will tonight, but just looking ahead.

Thanks again for your reply! I'm trying to get it ready for Kirbans Open House.

Last edited by liquidh8; 04-12-2018 at 09:58 AM. Reason: Fixed the pin number
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Old 04-12-2018, 12:58 PM
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Re: EBL SFI-6 Questions and Info

With the engine off there won't be any alky injection. That is most likely why there wasn't, no good filling the engine or intercooler with alcohol. I mentioned using 50% DC as an easy way to test the ECM output. Usually 12% is all that is required for a decent prime. But that would only drop the voltage by about 1.4 volts.

Not real easy to see at idle with the vehicle voltage varying a little.

Pin D10 is an input and has an internal 1.2K pullup to IGN+. More importantly is that it goes to 0 volts when the button is pressed. This can be checked at key-on, engine-off. And will verify that the switch is good.

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Old 04-12-2018, 03:43 PM
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Re: EBL SFI-6 Questions and Info

RBob, thank for explaining the theory of operation. That's a huge help in me testing the system. I'll run through later tonight and test everything out. I'll update my progress thank you.
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Old 04-12-2018, 11:12 PM
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Re: EBL SFI-6 Questions and Info

Well, the switch is good. I have 12 at pin D10, and it pulls to ground with the switch pressed. I backprobed pin 2 of the relay, and with 50%dc I am seeing 6 volts or so. I also ensured 12v to the relay, have it. I also have good grounds. It seems the new relay is bad?
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Old 04-13-2018, 08:04 AM
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Re: EBL SFI-6 Questions and Info

Either relay, pump or wiring.

With the 50% DC on the relay input (pin 2), check the voltage on the output (pin 3). It too should be at about 6 volts.

If it is at 0 V, I'd say the relay is bad.

If it is at 12 V, the wiring between it and the pump or the pump ground may be bad. Disconnect the relay plug from the relay and put 12 V to the connector pin 3. The pump should run full bore.

If so it's back to the relay. If no pump action trouble shoot from there.

Just to be sure the relay is the smaller one with no heatsink? The larger relay that has a large heatsink on it gets wired differently.

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Old 04-13-2018, 08:46 AM
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Re: EBL SFI-6 Questions and Info

RBob, thanks for the info again. I bought the relay brand new, 3 years ago, haha. It this one

https://www.amazon.com/Radiator-Chrysler-Plymouth-4707286AF-4897034AA/dp/B075FMFQYX#immersive-view_1523622933787
Is this the "no" heatsink version?

I'll try inserting voltage like you suggested, won't be till Monday though. In the interim, I'll order a new really just in case. I suspect it's defective.

I should have the pinout correct. I don't have the schematic in front of me to double check.
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Old 04-13-2018, 12:06 PM
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Re: EBL SFI-6 Questions and Info

That is the correct relay.

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Old 04-13-2018, 12:22 PM
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Re: EBL SFI-6 Questions and Info

Ok, thank you. Could you post the pinout? This was I can double check it.

I will update the tb thread when it works for me.
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Old 04-13-2018, 12:41 PM
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Re: EBL SFI-6 Questions and Info

Is this what your looking for the last schematic
http://www.dynamicefi.com/EBL_SFI6_Drawings.php
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Old 04-13-2018, 04:11 PM
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Re: EBL SFI-6 Questions and Info

Originally Posted by liquidh8 View Post
Ok, thank you. Could you post the pinout? This was I can double check it.

I will update the tb thread when it works for me.
See image.

RBob.
Attached Thumbnails EBL SFI-6 Questions and Info-fanrelay_1998.jpg  
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Old 04-16-2018, 10:27 AM
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Re: EBL SFI-6 Questions and Info

Update, first off, thank you for the wiring diagram and pinouts.

So, I have all I need to the plug, ground, control voltage, 12v fused, and the pump feed. If I jump pin 3 and 4, pump runs full bore. Looks like I have a defective (new) relay. Time to get a new one.

I'll see if the local Advanced Auto Parts has one. I'll update the thread when I get a new one.
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Old 04-17-2018, 05:10 PM
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Re: EBL SFI-6 Questions and Info

I picked up a new relay, dorman brand like the one I am replacing. Question, does the heatsink have to be grounded?
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Old 04-18-2018, 08:23 AM
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Re: EBL SFI-6 Questions and Info

I don't know if that is required or not (grounding the heat sink). In the OEM application it is as they are riveted to the frame rail. I did the same and attached it to the inner fender via sheet metal screws.

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Old 04-18-2018, 08:31 AM
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Re: EBL SFI-6 Questions and Info

Gotcha, mine is mounted to the front of the aluminum radiator support, in the grill area for cooling. But the radiator support isn't a good ground, is powder coated. So be safe, before I mounted it, I added a ground wire to the screw holding it on.

It does work now, primes like it should. Thanks again for all the help. Now, I have a to decide on whether to use a check valve, or the solenoid I already have for the line going from the pump to the nozzle.
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Old 04-22-2018, 03:07 PM
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Re: EBL SFI-6 Questions and Info

Well, it worked for a bit, like 5 minutes, then stopped working again. I made it to kirbans open house, and it didn't work the hour drive. Fuses are good, will troubleshoot it next week, at Macdill AFB this week

Last edited by liquidh8; 04-23-2018 at 03:17 AM.
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Old 05-01-2018, 09:26 AM
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Re: EBL SFI-6 Questions and Info

Update, after getting back from MacDill AFB, I went out and rechecked all the power, ground and signal wires. It appears I had a regressed pin in the relay plug. So, it is working now. Good news there. Ii can see the Alky % on the datalog, and the wbo2 get richer.

Now, I am running 20lbs, I will start to creap up on boost and timing.

Any recommendations on alky timing?

Also, I have both fuel pumps installed, but it sucks there is not light on the WUD, or column in the datalog when it is running. I never thought to add an LED to the pillar for the second pump.

I bought the parts to rebuild the transmission, so that will be soon. I also have to rebuild the steering box, it is leaking pretty bad, and the royal purple steering fluid isn't cheap.
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Old 07-11-2018, 09:05 PM
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Re: EBL SFI-6 Questions and Info

Where do I connect the wideband ground wire ?
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Old 07-11-2018, 09:36 PM
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Re: EBL SFI-6 Questions and Info

You can ground to the engine block
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Old 09-17-2018, 05:29 PM
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Re: EBL SFI-6 Questions and Info

C4 Corvette running SFI-6

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Old 09-17-2018, 05:36 PM
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Re: EBL SFI-6 Questions and Info

When I enable EscTt - Enable malfunction test of knock sensor connection, I get a SES light.
Should this flag be set or not ?
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Old 09-17-2018, 08:48 PM
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Re: EBL SFI-6 Questions and Info

Originally Posted by juan89 View Post
When I enable EscTt - Enable malfunction test of knock sensor connection, I get a SES light.
Should this flag be set or not ?
Not when running the stock turbo Buick knock sensor and filter.

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Old 09-19-2018, 01:56 PM
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Re: EBL SFI-6 Questions and Info

Originally Posted by juan89
Nice Juan!

- Rob
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Old 09-19-2018, 02:43 PM
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Re: EBL SFI-6 Questions and Info

Thanks. it is a great system
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