pyronotic138

iTrader: (1)

like the title says. me and a friend swapped a 1995 3.4 v6 camaro to a lt1. the motor is from a 96 TA, engine harness is from 95 TA, pcm from 97 z28.

we put a new coil on, new ignition module, new optispark, and still no spark at all from the coil. does anyone know if there is something that we missed that may need to be changed to make it get spark. also the diagnostic port under the dash cannot hookup to a scan tool. really need to figure it out quik. anyhelp is highly appriciated.

2xLS1

iTrader: (25)

You do realize you are using a OBD2 engine with a OBD1 harness and a OBD2 PCM. The OBD1 harness will not have the data wire in it to connect the ALDL plug under the dash to the OBD2 PCM. You may be having crank position sensor issues with the combination you are using. Click on the connectors here. http://shbox.com/1/4th_gen_tech2.html#1995_pcm_pinouts That will show you what is missing from the OBD1 harness that the OBD2 PCM needs.

69LT1Bird

iTrader: (1)

1995 is an odd year for the Camaro, it was kind of a transition to OBD2. The main this is, did you get the computer flashed? Is this the stock PCM? Does the engine have a crank sensor? If it does you can stay ODB2, if not you need to convert the system to OBD1. Bryan Herter has a conversion hs sells for the OBD 2 to 1 swap. Stop thowing expensive parts at it.

pyronotic138

iTrader: (1)

ya we have an obd1 pcm we tried in it. still doesnt have spark.

69LT1Bird

iTrader: (1)

do you have ignition voltage to the coil? Was the OBD1 PCM programmed?

Speartech

iTrader: (14)

You really need to get a voltmeter and see if you have voltage at the coil and the module. None of the programming or OBD-1 vs. OBD-2 matters for the problem your are having. It just looks like something isn't powered up.

aknovaman

iTrader: (7)

You can thank me now for fixing your car over the phone..... :-)
Let me know if you need anything else.

See you soon for a on-site tune!

;-)

Respectfully,
Anthony

pyronotic138

iTrader: (1)

props to AKNOVAMAN. he diagnosed a problem and got a car running over the phone. and is now working on a 383 to tune it from about 200 miles away. heh.

98turbls1

iTrader: (17)

So what was the problem??

aknovaman

iTrader: (7)

No 12 volts at PCM connector (v6 and V8 cars use different wires to power the under dash main PCM connecot harness). Thus crank and no spark. Also, IAC physically broken, internally.