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Username Post: Throwing code P1345 Combined with fuel pup issue. Thoughts?        (Topic#352985)
Doomsayer88 
Poster
Posts: 6

Loc: Colorado
Reg: 04-11-18
09-14-18 10:02 AM - Post#2746143    

I'm having another issue with my 1997 Tahoe 5.7. I was going down the highway at about 80 mph and the motor stalled. Just like that. Running fine (occasional rough idle but other than that fine) then stall. The fuel tank was empty when i tapped on it on the side of the highway and crunched in from vacuum i'm guessing. Called AAA and got a tow to a gas station, put $25 worth of premium in tried to start it with no avail. Checked the fuel pressure and it seemed weak or non-existent at best. At this point im assuming it is the cheap eBay fuel pump I put in it (my wife was overdue with my son at the time so I was working with what i had.) this fuel issue ive been dealing with for too long. I’ve replaced all the plastic stuff on the lines with AN fittings.
What throws my theory off a little is I scanned the codes using ScanXL Pro and got 2 codes.
P0140-HO2s Circuit Insufficient Activity Bank 1 Sensor 2.
That one doesn’t surprise me because my entire exhaust is one big leak. The next one was more concerning
P1345-Crankshaft Position (CKP) Camshaft Position (CMP) Correlation
Pulled the Crankshaft position censor and it does look like it’s the original part. The truck has a crate motor with 40,000 roughly on it. But would this cause the engine to stall on a highway and not start again? Or maybe the combination of that and the cheap fuel pump? Possibly running a cheap fuel pump dry in the tank?

The distributor is new as well, aftermarket, eBay, I was thinking the cam position censor might be bad as well?
It tried to start, sputters and dies
Thanks for Reading!!



 




Shepherd 
Frequent Contributor
Posts: 1421

Loc: Lake George, NY
Reg: 11-11-15
09-14-18 05:20 PM - Post#2746179    
    In response to Doomsayer88

No or low fuel pressure have you corrected this first? If not this is the main reason it won't run.1345 usually means the cam and crank sensor are not synched, a hi-line scanner is needed to correct this, but the engine would still run. Google the code for a more complete explanation.



Edited by Shepherd on 09-14-18 05:39 PM. Reason for edit: No reason given.

 
Doomsayer88 
Poster
Posts: 6

Loc: Colorado
Reg: 04-11-18
09-14-18 09:35 PM - Post#2746197    
    In response to Shepherd

Yes a new quality fuel pump was the first thing I ordered. I assumed that would be the main issue.



 
Doomsayer88 
Poster
Posts: 6

Loc: Colorado
Reg: 04-11-18
09-14-18 09:41 PM - Post#2746198    
    In response to Shepherd

Where would one get ahold of a hi-line scanner



 
Shepherd 
Frequent Contributor
Posts: 1421

Loc: Lake George, NY
Reg: 11-11-15
09-15-18 01:46 PM - Post#2746252    
    In response to Doomsayer88

Snap on, Actron, there are others, but they must have the capability to read the cam/crank synch info, this will allow you set it correctly.



 




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