LS1TECH - Camaro and Firebird Forum Discussion

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-   -   No Spark, Won't Crank (https://ls1tech.com/forums/pcm-diagnostics-tuning/721712-no-spark-wont-crank.html)

1999 SS #4526 May 27, 2007 05:52 PM

No Spark, Won't Crank
 
I have done several searches and I think my problem may be the crank position sensor, but I'm throwing this out in hope of some fresh ideas. Here is my predicament:

I drove my car, a stock 1999 SS, leisurely across town today. A couple of hours later, when I went to start it to come back home, it would not start. It would turn over strong but that was all.

After coming back with some tools, I started trying to troubleshoot. The problem is that there is no spark. Admittedly, I only checked the driver's side front plug with a brand new plug held against the valve cover, but I assume that no cylinder is getting a spark because the engine does not attempt to "hit" while being started. Also, after not having a spark I didn't do any checks on the fuel system.

I pulled and checked all of the fuses. I pulled and reseated all of the relays. I have a hand held scanner, the PCM has no stored codes. I disconnected the battery for 15 minutes. This is not a key issue because the manual states that the starter will not turn over if that were the case. I even tried to start the car while being jumped, still with the same result.

So the car is still sitting across town, anybody got any ideas?

sreve May 27, 2007 08:56 PM

check the inj 1 and 2 fuses with a test light. can you read B codes? look at the data stream does it show vtd fuel disable? do you have an rpm reading on the scanner? i would not completly count out the vtd they don't always work the way gm says.

1999 SS #4526 May 27, 2007 10:18 PM


Originally Posted by sreve
check the inj 1 and 2 fuses with a test light. can you read B codes? look at the data stream does it show vtd fuel disable? do you have an rpm reading on the scanner? i would not completly count out the vtd they don't always work the way gm says.

I checked all the fuses. My scanner only reads OBD II codes, no data stream or RPM's. I have two keys for the car and I took the second one back for troubleshooting.

I am really in a dilemma over having the car hauled to my house, or to a shop. I would very much prefer to fix it myself, but if I can't then I've wasted a rollback fee to have the car hauled to a shop then. And there's the fact that the car can't sit across town where it's at indefinately.

7camaro7 May 27, 2007 10:45 PM

if I were you I'd have insurance tow it to a dealership. There's a member on ls1.com who's got the same problem in their t/a. I think its strange

1999 SS #4526 May 28, 2007 10:01 AM

Update
 
Problem solved!

The starter relay and the ignition relay are the same part # so I swapped them out and the engine would no longer turn over. Installed a new relay and the car cranked right up. Less than $10 for the relay and no towing bill, what a Blessing!


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