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Issues with ECU/EZK

2tur4bo2

New member
Joined
Nov 23, 2021
If there is a thread that already touches on the issues I'm dealing with, please link me.
What am I doing wrong?

1980 242 with freshly built b230ft, green giant injectors, 960 MAF, new wiring harness for a 1990 240 with EZK.
Bosch 0 280 000 560 ECU
Bosch 0 227 400 149 EZK
Both with custom made chips from RedBlockPowered
I am not getting spark with the EZK chip installed, when I switch the daughterboard to OEM mode I'm able to get spark.
With the ECU chip installed the fuel pump RELAY does not activate the pump. flip the chip for the ECU around and I get fuel relay and pump working but it floods the cylinders with fuel.
I've been having this problem with two chips from different reputable tuners and I am running out of ideas here. Is my ECU shot? should I just try and source a different ECU/EZK set? Or is there something I'm missing?
Please help!
 
...flip the chip for the ECU around...
Yikes, you should never do that. It may fry the chip, but the rest of the ECU/EZK is probably OK.

If you look at the white lettering/drawing on the PCB at the ends of the EPROM socket, one end should show a notch. That notch drawing lines up with the notch, or divot, on the end of the EPROM chip. Please post pictures if you're not 100.00% sure [posting pictures is easy with the new site - just drag and drop them onto your message, or click the little mountain "insert image" button].

Does your '149 EZK have a factory daughter card installed, or did someone add it? Was it ever working?

The '561 "pink label" ECUs are notorious for failing (https://www.volvoclub.org.uk/faq/EngineFIComputer.html) - does your '560 have a pink label? Pictures?
 
Yikes, you should never do that. It may fry the chip, but the rest of the ECU/EZK is probably OK.

If you look at the white lettering/drawing on the PCB at the ends of the EPROM socket, one end should show a notch. That notch drawing lines up with the notch, or divot, on the end of the EPROM chip. Please post pictures if you're not 100.00% sure [posting pictures is easy with the new site - just drag and drop them onto your message, or click the little mountain "insert image" button].

Does your '149 EZK have a factory daughter card installed, or did someone add it? Was it ever working?

The '561 "pink label" ECUs are notorious for failing (https://www.volvoclub.org.uk/faq/EngineFIComputer.html) - does your '560 have a pink label? Pictures?
I read that accidently installing the chips backwards can cause the car to dump fuel or run weird, but that is shouldn't cause any harm.. could be wrong though. either way here is a photo of how I have the ECU chip installed.

Both the ECU and EZK have red labels, ECU being 560 and EZK being 149. pictures included

The EZK box has had an aftermarket daughterboard made by RedBlockPowered soldered in, I only get spark when the Daughterboard is set to OEM Mode. I am attaching a google drive link the all of the photos discussed above because the files were to big to add here.

Photos: https://drive.google.com/drive/folders/1mVwv1PTcZWbIZ0RuiUeODsb5WGJNu47J?usp=sharing
 
Putting the chip in backwards will swap power with ground pins which will instantly nuke it. even if it did work after, i would not trust it going miles from home.

About the LH box, it is normal when there is no chip installed or the chip is blowed up for the ECU to dump fuel. i've done it multiple times. it just turns on the relays and opens the injectors :wtf:

About the EZK, I ASSume the "OEM" jumper just puts the EA signal on the CPU high which causes the EZK to run on the embedded tune INSIDE the CPU and not the chip you've added. And the thing doesn't work in "MOD" because the chip is blowed up.
 
Your current chip orientation looks fine. If you bought your chips directly from redblockpowered, send him a note and see if he'll replace them at cost, or cost plus a 6-pack for his efforts. While you're at it, you can see if he has EGR/Non-EGR chips, and if his chips will work in a '560 series ECU (the hardware is different between the '56x and '9xx boxes, so the chips aren't compatible).

Edit: just to make sure, are you using a) a resistor pack and low-impedance injectors, or b) high-impedance injectors? If you're using low-impedance without a resistor pack, it will damage the driver transistor in the ECU.
 
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If you have the OEM chips try those, if the car starts and idles on those then the chips are the issue. If it does the same thing with the OEM chips then the ECU is dead. The 560s are known for failing and dumping fuel especially when you look at the age of these parts.

Also with the 960amm what size injectors are you running?
 
About the EZK, I ASSume the "OEM" jumper just puts the EA signal on the CPU high which causes the EZK to run on the embedded tune INSIDE the CPU and not the chip you've added. And the thing doesn't work in "MOD" because the chip is blowed up.

Yes, indeed, OEM makes it use the stock tune. Also definitely wouldn't re-use a chip that was placed in reverse, might work fine now, until it doesn't and leaves you stranded. I toss them when misused, they're cheaper than a tow;)
 
What impedance are "Green Giants"? I don't see any mention of a resistor pack. If they are low impedance you likely toasted the ECU already.

Should be high impedance. Reading back through the thread and looking at the soldering, you might have some unreliable cold joints there.

I designed these boards to be soldered in through the PCB, for some mechanical support like such:
59ZfVdzl.jpg


I can email you the manual with some hints on how to get the solder out from the via's if that is helpful. After confirming the connections are solid, I'd contact redblockpowered for a fresh set of chips.
 
Thanks all for chiming in with helpful responses, It means a lot.

Put a friends non chipped 149 EZK box in and an unknown turbo ecu and got it to run and idle (rough, but still idle) with the 960 maf unplugged and no tune. Im guessing now my best bet is to get new computers and new chips for those specific computers, Im gonna go for the 937 Fuel ECU and 207/219 Chippable EZK box, they seem to be the most reliable
 
Green giants are around 42lb/hr right? If you drop fuel pressure down to 2.5 bar these should run fine with the stock AMM. Bump up fuel pressure to 3.5 or 4 bar and those injectors should better match the 012 AMM with stock chips for it to be drivable.

967 is the best US spec ECU iirc, but the 937 and 954 are some of the most common.
 
From my notes:
The factory turbo "green top" injectors are Bosch 0280150357, 2.4ohms, ~31lbs/hr @ 3bar
I think "green giants" are usually Bosch 0280155968, 12ohms, ~41 lbs/hr @ 3bar
 
From my notes:
The factory turbo "green top" injectors are Bosch 0280150357, 2.4ohms, ~31lbs/hr @ 3bar
I think "green giants" are usually Bosch 0280155968, 12ohms, ~41 lbs/hr @ 3bar
Sounds like what I remember, so my last post holds as my correct statement as the OP did mention Green giants.

and IIRC the 357 injectors typically tested in the 29-30lb/hr while the LH 2.4 804 injectors test in the 31-32lb/hr range. But those numbers can vary I have seen.
 
Sounds like what I remember, so my last post holds as my correct statement as the OP did mention Green giants.

and IIRC the 357 injectors typically tested in the 29-30lb/hr while the LH 2.4 804 injectors test in the 31-32lb/hr range. But those numbers can vary I have seen.
So, If I install a 2.5 inch MAF in place of my 960 MAF and turn the fuel pressure down on my regulator a bit (AEM regulator) I should be able to run the car on stock computers? not looking at hitting high boost until I can get a good computer/chipset just wanna get the thing running.
 
Green giants are around 42lb/hr right? If you drop fuel pressure down to 2.5 bar these should run fine with the stock AMM. Bump up fuel pressure to 3.5 or 4 bar and those injectors should better match the 012 AMM with stock chips for it to be drivable.

967 is the best US spec ECU iirc, but the 937 and 954 are some of the most common.
The 967 is much more common than the 954. Both are the latest/best ECUs that came in US market turbos. The 967 came in non-EGR cars. The 954 was used in California emissions 1994-95 940s with EGR.
 
The 967 is much more common than the 954. Both are the latest/best ECUs that came in US market turbos. The 967 came in non-EGR cars. The 954 was used in California emissions 1994-95 940s with EGR.
Got it, do people make chips for these models? Wanting to make sure ive got something that is compatible with the chips available, What EZK box should I look for? Gold boxes are hide to find these days..
 
Look in na LH 2.4 cars, 240/740/940, more of those na ezks are chipable than people realize. Black boxes but they work just fine with the turbo ezk chip.

And yes more than a few people still make chips for those.
 
Look in na LH 2.4 cars, 240/740/940, more of those na ezks are chipable than people realize. Black boxes but they work just fine with the turbo ezk chip.

And yes more than a few people still make chips for those.
The only n/a ezk boxes that I've found to be chipable are just 89 model 240/740s. Never found them on 90+ cars. The only other n/a car that would have a chipable ezk would be an egr 93 + 940
 
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