ecu help.. need input

[beans33]

Ok heres the problem, I got my Ca rebuilt and everything. I also got a burned chip ( z32 maf, fuel cut etc. ) so I get the socket soldered in and before I can put the new chip in, one of the teeth break off. . At the time i thought no big deal ill just put the factory one back in.. Well since doing that, when turned to the ON position the fuel pump doesnt ever turn off, some sort of relay (im guessing fuel pump) keeps clicking on and off and while its clicking my ecu lights are going crazy. Mostly the green one just stays on but when the relays clicks the red comes on and the green dims. I would like to fix the problem but Im getting to the point to just get a new ecu. Not to mention the 10mm bolts that tightens down the harness plug... the head broke off , how the hell am i supposed to get me ecu now...[

[float_6969]

The broken bolt is probably your problem. That sounds very much like a back connection to the ECU...

[beans33]

would that still be the problem.. when i was tightening it down the big blue plug that goes in the ecu got tight so its not loose or anything. or does that bolt serve some other purpose besides tightening

[beans33]

[float_6969]

AFAIK, it doesn't serve any other purpose but to tighten up that plug, but w/o it, it might be possible for it to still have a bad connection and give you the problems you are having.

Also make sure you're grounds are all making a good connection.

[nocwage]

I've had the clicking pump problem a few times.

Once was because the harness was NOT all the way in.Once when I didn't "burn" the chip properly.. i.e. I had a 256 chip but didn't 'double' the rom size from the standard 128.. And a whole whackload of itmes when I've written to my eprom emulator and forgot to configure what rom chip it's supposed to emulate

So go back to your plug and push the two far ends of it in and see if they move.I find that with the screw in connector it just makes a solid connect in the center and the rest of the connector just kind of bends at the extremes..

I'm hoping that's all your problem is.Otherwise if it's clicking either your stock rom is fubar'd (good change of damaging it when desoldering) or the ECU is damaged..If you can get another eprom off someone to test I'd try that..

[beans33]

is there any chance you could make me one.. I have money ready.

[RiverRicer]

You might check to be sure ALL the wires in the plug are making good contact with the ECU pins. I had this problem with a 5.0L Ford where the a couple of the little plastic clips that hold the wires in the plug broke. Two injectors weren't firing, so I used a set of needlenose pliers to push the wires all the way onto the pins. Solved the problem - at least until they work loose!

[nocwage]

is there any chance you could make me one.. I have money ready.

I have an emulator so I never bought a burner or ROMS.If no one else here can help you I can probably get one burned..Does no one else on this board own a burner?

[beans33]

ok got a few questions.. I tried what nocwage said and it didnt do anything. Should I just get another chip and try that with the same ecu or should i just get another ecu and say screw the chip. If I decide to get a new ecu, can someone direct me on how to get the ecu off my harness. (remember the 10mm bolt broke. see pic.)

[boost_boy]

ok got a few questions.. I tried what nocwage said and it didnt do anything. Should I just get another chip and try that with the same ecu or should i just get another ecu and say screw the chip. If I decide to get a new ecu, can someone direct me on how to get the ecu off my harness. (remember the 10mm bolt broke. see pic.)

All depends on how soon you need your car back on the road. Only you know the answer to this dilemma. But if you must have the chipped stuff, let someone experienced do it for you so that they can assume resposibility if something goes wrong.

Dee

[ca18datsun510]

how the helll did you brake off the bolt head? if it was in that tight there is a chance it did physical damage to the inner part of the ecu and that could be causing your problems.

[beans33]

YES i do need it back on the road asap. And for the ecu every thread about an ecu i see is "make sure the harness is tightened down" dont get me wrong I didnt put any air tools on it. But just normally tightening it, the damn thing just broke off. It just sucks becauce ive spent almost 3000 on the rebuild and this happens....but im gonna suck it up and do what needs to be done.. any help is appreciated... thanks

[ca18datsun510]

well there is a pretty good chance you broke the connector inside the ecu. its only plastic, and if you tightened it enough to brake the bolt, you probly crushed it.

[float_6969]

I think he prob nailed it. You'll prob have to get a new ECU and IDK how you're going to fix the bolt situation. I don't have one to look at, but how is the bolt held in there? Can you just take it out and go to the hardware store and get another bolt?

[tineira]

Its very easy to know how much to tighten the connector. there is a red plastic tab right next to the bolt, you have to tighten the connector until the red plastic tab is at the same level with the two blue tabs next to it.

[beans33]

well float I got the bolt out and the ecu is disconnected. Ive looked over the ecu and it doesnt look like anything is wrong with it. Ill let you guys take a look at it ..

[ca18datsun510]

hmm.

how bout the harness side? that plug look ok?

check the wires and see if any are loose where they pin in.

[beans33]

They all seem fine... nothing out of the oridinary.. tommorow im gonna try out my freinds ecu and see what it does. I guess if it works right then its my eprom chip. Do you know of anyone that can make me one for 450's z32 maf, fuel cut etc. Or should i just try one of those ones off ebay.

[beans33]

any other opinions ?

[float_6969]

Did you try your friends ECU? A new chip isn't going to help if the chip isn't the problem...

[ca18datsun510]

Did you try your friends ECU? A new chip isn't going to help if the chip isn't the problem...

[beans33]

well i hooked up my freinds Ca ecu #79 and everything worked just fine. Fuel pump shut off after about 4-5 seconds, there were no relays going crazy.. I guess its time for a new ecu.

[float_6969]

Your burned chip is much more likely to be causing the problem.

[beans33]

could it be the chip thats causing the problem or the soldering, maybe a bad connection. I have the socket in the ecu. Is there anyone that can burn me another chip. Im going ahead and getting another ecu, im just gonna leave it alone and have the other ecu to mess with

[float_6969]

Yes, it could be the chip, it could also be the soldiering. Maybe a bad connection, or maybe you've got to pins soldiered together.

[matty]

if your looking to buy a new ecu, let me know

[beans33]

I got lucky and got one off ebay for 32 shipped... I just need someone to burn me another chip that they know works.. Thats the only way i can find which is the problem, Chip or soldering job..