ecu fun

[ch187]

already so i just put the new setup on the ca. z32 maf, 450cc, t28, socketed and chipped ecu. yadda yadda. with the new chip in, i turn the ignition on. they red and green lights come on the ecu but are dim and fuel pump just keeps priming, never turns off, car doesnt start. i put the stock eprom chip in. the fuel pump turns off this time and shoots out the 1,2,3,4,5 flashing **** and still wouldnt start, go to check the codes and it is now doing the same thing as my upgraded eprom does. any thoughts?

[c-rad]

Did you turn the screw back so it was no longer in diagnostic mode?

[ch187]

well ive realized the fact that the fuel pump doesnt turn off mean the chip is fried or he didnt burn it right. the stock eprom works but doesnt start. i get code 55 which means everything is cool. the only other thing i wired was the z32 maf but thats right. im pretty sure. so the stock eprom should start the car. thats all i want at this moment. if it runs like **** fine, i know it was the eprom. im about to give up and save up for standalone because this is complete bull****.

[beans33]

I know the feeling, make sure the socket is soldered in good.. I had this same problem with 3 different chips and found out that the chips were good, but the socket wasnt soldered well... Im going standalone as well. heading to the junkyard tommorow for edis parts for megasquirt II.. good luck

[ch187]

yeah but im getting spark! and when i pulled the spark plug out i smelt fuel. i was sketchy with my socket. i soldered 26 pins perfect. you cant even tell it was redone but pins 27 and 28 soldered together. i sucked it back out but it still left this silver **** on the board in between so i had to scrape it away making sure i didnt **** up the board. there might still be enough there to **** things up. maybe i can take a picture. its the only other thing it could be. if i fried the ecu, i would be able to look at it and tell wouldnt i?

[float_6969]

I don't think the stock ECU will start the car with that Z32 MAFS hooked up. It'd be wwaaayyyy too lean. try unplugging it and starting the car.

Also remember that if you've using an oversized ROM (most likely you are) you've got to burn the image multiple times.

[ch187]

i was thinking that. i unplugged it once but i can remember what chip i was on and if i had it off diagnostic mode. thanks man. i will recheck my soldering on the socket and unplug the maf tomorrow and see what happens. definately getting another chip.

[c-rad]

Also, if the chip is burned bad, the car will not run. It will turn over and that's about it. That happened to me when I first put my motor in and I was stumped. Double check you MAF wiring though. You have both grounds hooked up, right? One should go to the ecu wiring harness, the other should be ground to the chassis.

[ch187]

yep the wiring for that is good. thats the reason the car broke down and im doing this, so i triple checked that one. im sure the chip i got was burned bad but i have the stock one in there just to get it started.

[BEST1TUNING.COM]

Hi Casey, I definately want to get this resolved for you regardless of the cause of your problems.

For the rest in the thread, I am the one who Casey purchased the chip from. It is on a 512 eeprom with 4 images burned every 128k just as I do every CA chip. The chip was not just burned and sent out it was installed in a car and tested.

I want to solve the problem but the first step is figuring out if this is a problem with the chip, the install, or the socketing job.

Casey you are welcome to send your ECU to me to verify it is socketed correctly, or you can purchase a working unit and I will credit you for it as long as I am able to repair your old one.

[ch187]

ok so how much more would it cost me for you to send me an ecu that you socketed and a chip and i send you mine back? you guys are pretty good with your customer service

[BEST1TUNING.COM]

Well thank you I definately stress customer service and support.

I can get ECU's independently and they cost you what they cost me which is $135 shipped.

The chip you purchased from me was without install which is an additional $65.

So initially you would be looking at $200 but $125 of that would be refunded if your ECU is repairable(includes subtracted shipping)

If the problem actually proves to be my error, you will be refunded for the ECU, socketing, and all shipping charges.

-Hanna

[ch187]

so why does it cost 65 for a new chip? i already paid 150 for the tune i just need it burned again. i think my socketing job is ok. im getting fuel and spark on the stock eprom. i just dont think its turning over because the z32 maf maybe? who knows. however the chip you sent me, it doesnt do anything.. the fuel pump doesnt even turn off..i just think 65 is a bit much just for you to burn me a new chip? am i being cheap or fair?

[BEST1TUNING.COM]

No the $65 would have been if I needed to socket another ECU if your socketing job was bad.

So your new chip will be sent for $25 since we determined the problem.

Enjoy!

[ch187]

these guys know what they are doing. the service is well worth the money. the parts, the service, the knowledge, its all there. one happy customer. even happier when i fire this beast up. 25 is cheap assuming it was a **** up on my part! you would never get that from anyone else.

[driftin8ez]

To get the car to start on the stock chip just unplug the maf. That way you will be in ecu limp mode. The car should start and idle fine. It just wont rev past 2500rpm. So if you can start the car and it behaves like i just said than all you would need is a new chip and make sure you maf is wired correctly. If you get no start with the maf unplugged than you ecu is ****ed in one way or another.

[ch187]

im pretty sure the maf is wired right. doesnt start when its unplugged. but that doesnt surprise me because when the car broke down it was because of the maf. plugged in it would run in safe mode unplugged it wouldnt start. when i first got the car, it wouldnt start because the maf came unplugged. if the new chip doesnt work, ill look into it but the ecu board looks fine. nothing fried or burnt or ever got hot. diagnostic mode works fine. gave me code 55 which means no malfuntion. so we'll see