bpestilence
15+ Year Contributor
- 271
- 2
- Jul 26, 2004
-
Pearl City,
Hawaii
I know ignition problems have been covered in detail, and I have read all the threads I could find about the problem. But I need a little more info.
My car ran fine before I rebuilt the car. I did not change anything external, only upgraded the internals and cleaned everything up. Now that I am finally ready to take the car off of the jackstands, I tried to fire it up and it was hard to start, finally running poorly and only on cylinders 1 and 4.
So what I have checked. The coilpack checks out, the transistor checks out and switches properly when stimulated by a 1.5v battery. Double checking has shown that cylinders 2 and 3 are in fact not getting spark.
From what I have read, the lost likely problem would be the crank angle sensor or the cam angle sensor. This is a 2g car. But, from the other threads I have read, a bad CAS would either cause no cylinders at all to fire, or either a pair 1 and 2 or 3 and 4 not to fire. On my car 2 and 3 are not firing. This leads me back to the transistor which still checks out.
To be safe I pulled the CAS sensor back out and double-checked the harness. Not crimped or anything. The only thing I found was this wire:
in the center of the picture, which I don't remember where it goes. Looks like it goes on a single blade connector but I can't seem to find where it goes. I think it also possible that I might have connected the wrong triangle connectors, since there are three over here that are identical. But I don't think any cylinders would fire at all if the CAS or coil connectors were on wrong?
I haven't messed with the cam angle sensor, since the threads seem to say that the cam angle sensor isn't important for the timing of 2g cars. There was one thread, though, that claimed that the crank sensor times two of the cylinders, and the cam sensor times the other two. It was that one thread though.
So my questions: Is what is said in the paragraph above true? If so, which sensor matters for cylinders 2 and 3? Is it possible to somehow put the crank sensor in wrong that might cause this? Is there a convenient way to test the crank sensor? Is it possible that the transistor is bad even though it tested out?
My car ran fine before I rebuilt the car. I did not change anything external, only upgraded the internals and cleaned everything up. Now that I am finally ready to take the car off of the jackstands, I tried to fire it up and it was hard to start, finally running poorly and only on cylinders 1 and 4.
So what I have checked. The coilpack checks out, the transistor checks out and switches properly when stimulated by a 1.5v battery. Double checking has shown that cylinders 2 and 3 are in fact not getting spark.
From what I have read, the lost likely problem would be the crank angle sensor or the cam angle sensor. This is a 2g car. But, from the other threads I have read, a bad CAS would either cause no cylinders at all to fire, or either a pair 1 and 2 or 3 and 4 not to fire. On my car 2 and 3 are not firing. This leads me back to the transistor which still checks out.
To be safe I pulled the CAS sensor back out and double-checked the harness. Not crimped or anything. The only thing I found was this wire:
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in the center of the picture, which I don't remember where it goes. Looks like it goes on a single blade connector but I can't seem to find where it goes. I think it also possible that I might have connected the wrong triangle connectors, since there are three over here that are identical. But I don't think any cylinders would fire at all if the CAS or coil connectors were on wrong?
I haven't messed with the cam angle sensor, since the threads seem to say that the cam angle sensor isn't important for the timing of 2g cars. There was one thread, though, that claimed that the crank sensor times two of the cylinders, and the cam sensor times the other two. It was that one thread though.
So my questions: Is what is said in the paragraph above true? If so, which sensor matters for cylinders 2 and 3? Is it possible to somehow put the crank sensor in wrong that might cause this? Is there a convenient way to test the crank sensor? Is it possible that the transistor is bad even though it tested out?
