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2000 Cadillac Deville DHS
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9 Posts
Discussion Starter #1
I see the following...
P0335=Crankshaft Position Sensor A Circuit Perf
P0340=Camshaft Position Sensor Circuit
P0341= Camshaft Position Sensor Performance

So what exactly do I need to tell the mechanic to replace? My car runs great, it just cuts out once every other month but starts right back up sometimes on 2 turns and other times on 4-5?
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,446 Posts
The P03xx series of codes come about mostly due to a run of bad CKP (CranKshaft Position) sensors in the 00-04 Northstar series. The bad units were made in Mexico by Siemens and are so stamped. The CMP (CaMshaft Position) sensor sometimes goes, also.

The CKP's cause a slowdown or near-stop stall and immediate restart. IF the fault continues, the ignition timing will eventually default to a fixed 10 degrees BTDC.

The new replacements are manufactured in Japan, probably by DENSO, an OEM supplier to a lot of GM electrical/electronics.

www.rockauto.com or Luke in parts at Lindsay Cadillac over there ------>

Probably $150 in the three sensors and an hour and a half labor. Take a look at the sticky up there ^^^ entitled "How to pull codes". Scroll down......you want the OBD-II ling for the proper code sequences.
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,446 Posts
The pictures tell the story. Put the car up on a lift and remove the lower radiator splash shield by pulling the 10 -12 plastic push-pin rivets. Shop mechanics work around the oil filter adapter and front motor mount, but you might want to remove the filter adapter for room. Other posts on that job. The post 2000 Northstars have 2 different CKP's, pre-2000 are the same unit. The CKP and connectors only go in/on one way. The connectors are their own chore to disconnect.....takes dedication. You MAY need to go to a dealer for a "CKP relearn procedure" if you have driveability problems after replacing both - the CKP's essentially are the timing triggers for the entire ignition system, coordinated with the CMP (CaMshaft Position sensor) for cylinder position.

CKP's set 4 codes - P0335 & 6 and P0385 & 6, depending on which is setting the fault code. You MAY also see a code for "stall or near stall detected".

If you have no P0340/41 codes, don't fool with the CMP. It's in the front lower portion of the rear cam cover, sort of below and behind the P/S pump.

If you anticipate doing ANY electrical, electronic, engine, or transmission work on your car, you NEED a Helm/GM Factory Service Manual either from eBay or www.helminc.com ($135) or subscribe your car for 3 years to www.alldatadiy.com: manuals, TSB's, recalls, diagrams, all codes, all modules, labor times, everything and much more. (Forget Chilton's or Haynes: far too generic for any in-depth work.)
 
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