LTCC install problem. Please help.
LTCC install problem. Please help.
Part 1 - deals with the test i did on the opti (opti seemed to be good)
Part 2 - deals with the ltcc and it not working
PART 1
well i figured it would happen lol. Ok well we installed it and no spark!
I have tested my optispark and it read that it was ok... let me explain how i tested it...
opti off ( i had it in storage and needed to see if it was good, it had about 1500 miles on it when i took it off, turned out the icm was bad on that occasion)
on the opti harness while connected to the opti: (letters are the pins on the harness)
-d: negative source
-c: 12v source
then tested the opti
a to positive on dc scale and d to negative on dc scale. slowly turned opti and read constantly between 1v-5v
b to positive on dc scale and d to negative on dc scale, slowly turned opti and read constantly between 1v-5v
so i also tested my bad opti's (2 of them) and didnt even get readings... SO I FIGURE, i repeat FIGURE my opti is good, so i installed it! But why do i ahve a feeling I will be eating these words.
PART 2
i did the 20 seconds of cranking this morning to see if i caould get a code an di dont see any blinking action.
So we put the coils on the valve covers, connect them to the designated spark plugs, and ground the coils. On the 4 fuel rail bolts i have 2 coils gounded on each one (a good ground imo).
Well the 4 wires now: White, Yellow (we are not going to mention because i do not have nitrous), and the 2 pink wires.
White- we cut the B terminal wire on the ICM (yellow color, my car is a 1996 formula) and connected it with a female connector. Is this the right wire to connect to?
2 Pink wires - we spliced them and connected them to the coil wire... NOW there were 2 wires from the coil a green one and a pinkish one. The green one just went to the ICM so we assumed it was the pink. We cut the pink wire form the coil and attached it with a female connector with the 2 pink wires from the ltcc. I do get 12 v from the wire at KOEO so it seems to be good.
now the fuse: replaced a 20 fuse for the ignition.
all 4 DIP switches are on the off position
retard- 0
rev lim- 4 (6400)
I have 12v power at the coils.
Cranked the car and NOTHING!!! she just cranks, fuel pump goes on and all so i disconnect a wire and put a plug to it and ground the plug to see if we can crank the car and see spark... nothing.
Well the weird thing is, when we turn the key to KOEO the ltcc lights up with a fast blink, green then red, and then they both shut off and thats it, and the lights never some on again. I do not notice any lights while cranking either. soo what do i do? any ideas?
I just checked the the a and b pins on the ltcc box and i do get a 4-5v reading, and it says that those are the high and low res signals form the opti... and i get voltage.
things that could be bad....
1) opti - if it is bad i would die from amazement, but a probable suspect
2) opti harness - doubt it, pretty new and it worked well on the opti test, it has no resistance in it, and NO CORROSION.
3)wiring to LTCC- could only be wrong on the ICM wiring.
4) LTCC box
5) PCM, and i have 2 of them, tried both, same problem
6) coils - doubt that all 8 are bad enough not to even spark
7) spark plug wires- barely used!!! look BRAND NEW (taylor 8mm)
8) sparkplugs- yeah right, brand new gapped at .045 tr55s
9) fuses- cheack ALL OF THEM and all are good
Part 2 - deals with the ltcc and it not working
PART 1
well i figured it would happen lol. Ok well we installed it and no spark!
I have tested my optispark and it read that it was ok... let me explain how i tested it...
opti off ( i had it in storage and needed to see if it was good, it had about 1500 miles on it when i took it off, turned out the icm was bad on that occasion)
on the opti harness while connected to the opti: (letters are the pins on the harness)
-d: negative source
-c: 12v source
then tested the opti
a to positive on dc scale and d to negative on dc scale. slowly turned opti and read constantly between 1v-5v
b to positive on dc scale and d to negative on dc scale, slowly turned opti and read constantly between 1v-5v
so i also tested my bad opti's (2 of them) and didnt even get readings... SO I FIGURE, i repeat FIGURE my opti is good, so i installed it! But why do i ahve a feeling I will be eating these words.
PART 2
i did the 20 seconds of cranking this morning to see if i caould get a code an di dont see any blinking action.
So we put the coils on the valve covers, connect them to the designated spark plugs, and ground the coils. On the 4 fuel rail bolts i have 2 coils gounded on each one (a good ground imo).
Well the 4 wires now: White, Yellow (we are not going to mention because i do not have nitrous), and the 2 pink wires.
White- we cut the B terminal wire on the ICM (yellow color, my car is a 1996 formula) and connected it with a female connector. Is this the right wire to connect to?
2 Pink wires - we spliced them and connected them to the coil wire... NOW there were 2 wires from the coil a green one and a pinkish one. The green one just went to the ICM so we assumed it was the pink. We cut the pink wire form the coil and attached it with a female connector with the 2 pink wires from the ltcc. I do get 12 v from the wire at KOEO so it seems to be good.
now the fuse: replaced a 20 fuse for the ignition.
all 4 DIP switches are on the off position
retard- 0
rev lim- 4 (6400)
I have 12v power at the coils.
Cranked the car and NOTHING!!! she just cranks, fuel pump goes on and all so i disconnect a wire and put a plug to it and ground the plug to see if we can crank the car and see spark... nothing.
Well the weird thing is, when we turn the key to KOEO the ltcc lights up with a fast blink, green then red, and then they both shut off and thats it, and the lights never some on again. I do not notice any lights while cranking either. soo what do i do? any ideas?
I just checked the the a and b pins on the ltcc box and i do get a 4-5v reading, and it says that those are the high and low res signals form the opti... and i get voltage.
things that could be bad....
1) opti - if it is bad i would die from amazement, but a probable suspect
2) opti harness - doubt it, pretty new and it worked well on the opti test, it has no resistance in it, and NO CORROSION.
3)wiring to LTCC- could only be wrong on the ICM wiring.
4) LTCC box
5) PCM, and i have 2 of them, tried both, same problem
6) coils - doubt that all 8 are bad enough not to even spark
7) spark plug wires- barely used!!! look BRAND NEW (taylor 8mm)
8) sparkplugs- yeah right, brand new gapped at .045 tr55s
9) fuses- cheack ALL OF THEM and all are good
Last edited by KillinFormula; Nov 21, 2006 at 03:44 PM.
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