94 LT1 installed
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Intermediate
Joined: Mar 2006
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94 LT1 installed
I put this 94 LT1 into my 72 chevy truck, finally yesturday I was at a point to see if the engine would start. now keep in mind I have had the PCM and wire harness constucted for this truck application. ok so as I was cranking the engine over it has no problem.
the problem is I am getting no spark to the Spark plugs, checked this by removing #1 plug wire and had the wife crank the motor as I watched to see if I had spark. well the test showed no spark.
this is where I dont know where to test from here.
How do I know I have power to the PCM? how can I test this? the wire harness has a wire for SES (service engine soon) the light I hooked up to this wire works. But when the light is connect to the wire harness and I am cranking the engine over the light does not come on, so this is making me think maybe I have no power going to the PCM
is there a way to verify power to the PCM? and I know I dont have all answers so I am hoping you guys can help me trouble shoot this to get this engine to run
thanks in advance for all your inputs
the problem is I am getting no spark to the Spark plugs, checked this by removing #1 plug wire and had the wife crank the motor as I watched to see if I had spark. well the test showed no spark.
this is where I dont know where to test from here.
How do I know I have power to the PCM? how can I test this? the wire harness has a wire for SES (service engine soon) the light I hooked up to this wire works. But when the light is connect to the wire harness and I am cranking the engine over the light does not come on, so this is making me think maybe I have no power going to the PCM
is there a way to verify power to the PCM? and I know I dont have all answers so I am hoping you guys can help me trouble shoot this to get this engine to run
thanks in advance for all your inputs
Thread Starter
Intermediate
Joined: Mar 2006
Posts: 41
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yes I have a volt meter, can you tell me what are injector noids?, the harness was made by LT1 Wiring out of Erie,
I beleive I am not getting spark, this is all new to me But I know we can figure the problems out. Im wondering if maybe Im not getting power to the PCM, now LT1 has modified the PCM for this application, so I mean they have reprogrammed the PCM so I'm assuming nothing is wrong with the PCM. but when I turn the Key to On would not the SES light come on for this time, it does not right now, I know the light is good because I have checked it
I beleive I am not getting spark, this is all new to me But I know we can figure the problems out. Im wondering if maybe Im not getting power to the PCM, now LT1 has modified the PCM for this application, so I mean they have reprogrammed the PCM so I'm assuming nothing is wrong with the PCM. but when I turn the Key to On would not the SES light come on for this time, it does not right now, I know the light is good because I have checked it
Team Owner
Joined: Mar 2001
Posts: 30,858
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Here's how to hook'em up.
You just need to do one to see if you getting a signal.
http://wiki.answers.com/Q/How_do_you...ectors_are_bad
Do you have a diagnostics port on the harness?
You could then hook a laptop up and not only see if you have power, but all sorts of good stuff. Like error codes.
Thread Starter
Intermediate
Joined: Mar 2006
Posts: 41
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yes I have a LapTop and also yes I have a OBD1 port on the harness,
But please this is what I'm hoping you can help me with, to connect the laptop would I not need software to read trouble code?
Please be patient with me this is new to me
But please this is what I'm hoping you can help me with, to connect the laptop would I not need software to read trouble code?
Please be patient with me this is new to me
