1990 EF SI
D16z6 swap 1.6l manual

ok.. basically my car is being gay to the max at the moment and will not start. originally was not getting any spark, so tried an extra dizzy i had laying around... it sparked but the ignitor was itermittent... so i purchased a brand new dizzy brand new coil everything.. so it sparks like crazy now, but all car will do it fire then die.. so after extensive checking and replacing of parts that i didnt need to... it came down to the ecu... was flashing codes 4 and 15.. put in new ECU, and it wiped out code 15, the car will now start.. however i have to be on the gas at all times or it will just stall. as well, even when it is running its not drivable.. wont go very fast is backfiring etc. and im still getting a code 4 for crank angle sensor... so i have new computer new dizzy and i checked all the wiring and its fine... it seems i am losing the ground from the crank angle sensor back to the ecu... but i have now tried 3 different ecu's and they are all reproducing the same results.. basically the signal either to or from the crank angle sensor is so week it wont sustain itself... i eventually brought it to a garage and he said the same thing its the ecu... but 3 ECUs??? im wondering which wire is maybe the ground for this circuit or what else could be the problem..

 

Whoa, just a suggestion, use a period (.), it helps to be able to read your question if you want an answer.

Sarcasm aside, are you sure that the wiring is solid going to the distributor? If this is a problem occurring across numerous dizzys and ECUs, I'd be willing to bet that the problem lies in the wiring itself. That's the common link in all this.

 

If I recall correctly, b10 and b12 (OBD0 anyway) are the only wires in the CEL 4 circuit. I would depin them at the ECU and double check that the pins are making proper contact, then try running new wires to the dizzy and see if that clears it up. May be a break in the wire along the way.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JustAnotherRex &raquo;</TD></TR><TR><TD CLASS="quote">If I recall correctly, b10 and b12 (OBD0 anyway) are the only wires in the CEL 4 circuit. I would depin them at the ECU and double check that the pins are making proper contact, then try running new wires to the dizzy and see if that clears it up. May be a break in the wire along the way.</TD></TR></TABLE>

Trust this man, he's gone through a proper cluster-f*ck of wiring in his lifetime.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JustAnotherRex &raquo;</TD></TR><TR><TD CLASS="quote">If I recall correctly, b10 and b12 (OBD0 anyway) are the only wires in the CEL 4 circuit. I would depin them at the ECU and double check that the pins are making proper contact, then try running new wires to the dizzy and see if that clears it up. May be a break in the wire along the way.</TD></TR></TABLE>

That and grab new crank angle sensor, install that, and also, just for giggles,
make sure your timing is correct.

 

cant replace the crank angle sensor its part of the dizzy and in this case i just got it brand new.. i will attempt to check the wires again... cant check my timing because i need the car to idle first. but yah ill check the wires again but i got the car with the swap in and it had been running fine for the last 3 years.. do you know what voltage the wires should have running from CAS to the ECU?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Snipzorz &raquo;</TD></TR><TR><TD CLASS="quote">cant replace the crank angle sensor its part of the dizzy and in this case i just got it brand new.. i will attempt to check the wires again... cant check my timing because i need the car to idle first. but yah ill check the wires again but i got the car with the swap in and it had been running fine for the last 3 years.. do you know what voltage the wires should have running from CAS to the ECU?</TD></TR></TABLE>

Something may have worked its way loose then, I would check solder points first and foremost.

I don't actually know what voltage the wires are running, I would have liked to figured that out but never did. Replacing b10 and b12 with new pins + wires solved it for me, and then generated a Code 9 which I still have, so go figure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Snipzorz &raquo;</TD></TR><TR><TD CLASS="quote">cant replace the crank angle sensor its part of the dizzy and in this case i just got it brand new......</TD></TR></TABLE>

New parts can be bad......aftermarket dizzy's notorious?......good luck

 

I had the same problem and it turned out to be the 2 wires backwards at the dizzy I think its b10 and b12.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Snipzorz &raquo;</TD></TR><TR><TD CLASS="quote">... cant check my timing because i need the car to idle first. </TD></TR></TABLE>
he meant check the cam timing....not the ignition timing.

 

and even then u can check the ignition timing by making sure cylinder number one is on top dead center and pull your dizzy cover off and see if the rotor is facing straight up. that way you will be within a cranking ability and when u get it runnin then u can dial it in.

 

are you running obd0 or obd1

 

yes well i checked the timing via the dizzy/cam shaft.. thnx for the option though.. and currently i am running 0bd0....

two wires backwards at the dizzy???? this is a possibility ive been playing with because on my dizzy to the harness there are two white wires hard to tell what color they were,,, b10 and b12 what color are they coming from the ecu??

 

check your spark plug wires are on correctly. also check to make sure your thermostat ground is connected. lastly make sure your wiring is correct. did your car ever run good with the sohc zc?

make sure your timing belt didnt jump a tooth. reset your ecu too.

i think its the dizzy plug wiring.

how are you securing your dizzy's to your head? theres no way u have had access to 3 different modified si ecus...

 

GAYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY jsut figured it out by reading a diff forum... so apparently u cant use a 0bd1 dizzy if you are still using the 0bd0 pm6 ecu.... different number of pully teeth for the crank angle sensor LOL, so i either need a p28 ecu and the plugs or get old dizzy again and grind out holes ... i hate the ppl that did half a swap in my car GRRRRRRRRRR anyone have a p28 with the wires for me :D message me will send $$ via paypal!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Snipzorz &raquo;</TD></TR><TR><TD CLASS="quote">so apparently u cant use a 0bd1 dizzy if you are still using the 0bd0 pm6 ecu.... different number of pully teeth for the crank angle sensor </TD></TR></TABLE>

I remember reading something about Mr. Endyne (or someone like that) using a dremel to grind off every fourth tooth of the dizzy gear so that the frequency would match the other OBD system.......Might be worth a look, but you may have to dig deep for this rare info.....Good Luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Snipzorz &raquo;</TD></TR><TR><TD CLASS="quote">GAYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY jsut figured it out by reading a diff forum... so apparently u cant use a 0bd1 dizzy if you are still using the 0bd0 pm6 ecu.... different number of pully teeth for the crank angle sensor LOL, so i either need a p28 ecu and the plugs or get old dizzy again and grind out holes ... i hate the ppl that did half a swap in my car GRRRRRRRRRR anyone have a p28 with the wires for me :D message me will send $$ via paypal!</TD></TR></TABLE>

well how did you have vtec before?

might be worth going obd1 for a better tune and some vtec.....

track down an ecu and get the jumper harness from rywire......