Yep,56 is a tad low. needs to be about 60. Have you changed your fuel filter? Could be really dirty.

May be time for a new pump.

 

Hello, and thanks in advance for any help.

I have a 1995 Blazer S-10 4.3 Vortec and I'm getting code P0341
for the camshaft sensor.

I pulled the dist. and think I might be off a tooth so I'm going to check that tomorrow. What I was wondering if I was off a tooth would I get a P1345 code, or is that code even on this model yr ?

Thanks,

Sluggo

 

If the distributor is off one tooth or more in either direction, P1345 will be set, guaranteed. If the distributor is installed correctly, the DTC will not set. P0341 is indicating a problem with the Camshaft Position Sensor or the circuits to and from it. Follow this flow chart and you will find the problem: https://blazerforum.com/forum/diagno...plained-35148/

 

Thanks Captain, I checked all of these things and still no luck.

I checked out the continuity of the wires, power, ground etc... and all checked out ok. I replaced the cam sensor too, just to be sure it was good.

I erased the code with an Actron obd II scanner that links up with this obd I compliant system for some reason, but my Cen Tech will not link up so I can't get any live stream data.

Anyway, I drove for about 20 min or so and code, and symptoms came back.

I'm thinking maybe spark plug wires could be causing this, but there isn't any arcing when looking at night, and spark plug wires looked good, and tested ok with ohm meter.

Maybe someone can answer me on this question. Can a coolant temp sensor, or bad ICM cause this code to be set ?

Thanks,

Sluggo

I have changed the filter. I'm not so sure the fuel system is the culprit anymore.

I keep getting a P0341 cam sensor code, and I have checked the curcuit wiring, and replaced sensor just to be sure it's good. I erased the code with Actron obd II scanner and code came back. I'm thinking maybe spark plug wires causing interferance, but I have checked them out and checked ohms and all checked out good.

I'm also wondering if a coolant temp sensor shorting out could cause this code, or a bad ICM ?

Thanks for any help with this issue,

Sluggo

Thanks in advance for any help.

I have a 1995 late model yr S-10 Blazer with a 4.3 Vortec with the flat distributor.

Problem:

I keep getting a P0341 trouble code and vehicle will run bad when it sets and rpms get sporatic.

Code is for the cam shaft sensor. I have checked all the wires by doing power, ground and continuity checks etc... and all checked out good.
I also replaced the cam sensor just to be sure that's ok.

I erased code with an Actron obd II scanner that seems to work on this obd I compliant vehicle for some reason, but I can't get my Cen Tech scanner to link up so I have no live stream data. Anyway, the code comes back every time.

Also, I noticed on freeze data that it always sets the code when engine temp is 188 degrees F. Could a bad coolant temp sensor cause this code, or a bad ICM ?

My one other thought would be that the spark plug wires are causing this code, I have checked them and checked the ohms and all is good, so not sure what to think at this point.

Thanks again for any help anyone can give me,

Sluggo

 

*Combining Threads* - Please keep the discussion together. You have 3 separate threads that all pertain to your problem. Keeping things together gives those trying to help a complete picture of what is going on with your truck and eliminates duplication saving us AND you time.

 

If you're getting P0341, follow the flow chart exactly as written and you'll find the problem. The PCM is an invaluable piece of diagnostic equipment, trust it

 

Thanks Capt,

I did move the spark plug wires and taped up some others by the coil.

I ran engine until it starting running bad, and I didn't get a cam code this time (after shutting engine off and starting it several times) but I did have an IAT code because I had it unhooked. I looked at freeze data and the temp on there was 188 degrees F like it was with the cam code freeze data.

LTFT 1 and STFT 1 are good and within 10%, but the LTFT 3 and STFT 3 are always off by about 50%.

I tapped the gas and the rpms went up to 2000 rpms after I let off the gas, and stayed there for about 20 seconds or so. You have any idea what this could be ?

My check engine light doesn't work either. I'm thinking I should probably check that out too.

Thanks,

Sluggo