HELP DTC p1345

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HELP DTC p1345
souf star avatar
souf star
+1y
I have check engine code DTC Code P1345 looked on the internet and all I can find is
CMP sensor
CKP sensor
timing chain
Distributor cap and rotor, hold down bolt

does anyone know how to test the sensors or fix the problem?
1fastlx avatar
1fastlx
+1y
looks like the timing is jumping around or the ecm thinks so. what r we working on mileage etc.? there really isn't a good way to check those sensors without and o-scope.
98crewcab avatar
98crewcab
+1y
the errors is when the DTC sees that the CMP and CKP (camshaft and crank shaft) sensors are not in sync with each other.


how many miles on the truck?, the error refers to a
1 loose CMP (camshaft position sensor) sensor causing a variance in the sensor signal.
2 excessive free play in the timing chain and gear
3 incorrect installed distributor-1 tooth off
4 loose dist rotor
5 broken ,worn wire connections

if you can give more info....
98crewcab avatar
98crewcab
+1y
did you find the problem?
we like to know what is was
souf star avatar
souf star
+1y
No havent found it yet the truck is sitting around 160k
souf star avatar
souf star
+1y
well this is how it goes I got drunk and had a wild hair in my A$$ about tha CEL so I popped the hood and started takin sh!t apart and when I got the distributor out right away <-(2 beers later) notice that the gear looked like this
V V V V V V V V -----------------------------------------------V V V V V V V V V
thread post photo

thread post photo

thread post photo


I think that after about 2-3 more 30packs I will get to the bottom of the P1345

btw from what I can tell the cam is ok........
98crewcab avatar
98crewcab
+1y
I replaced one of those gears years ago on my 74 fleetside, (back in the 80s.)
I made a mistake and put the dam gear upside down
i think the beers did it.
well to make a long story short, the dist wouldnt drop back in all the way,was about 1/2 inch from flush...found it after looking at another dist..
souf star avatar
souf star
+1y
LOL yeah I'll set it up first before I start to drink
pig rig avatar
pig rig
+1y
just an FYI drinking and working on trucks can cost you a lot of money but the end resalt can be way cooler then intended

look at my garage theres a front end rebuild that cost me 8 grand and its still not done and now its in pieces agine
bdydrped avatar
bdydrped
+1y



how you think "minitruckin" got started LOL