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2000 DTS


ronalddts

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B0429 Temperature Control #3 Rear Circuit Range/Performance

B1860 Driver Lumbar Vert Sensor Circuit Malfunction

I would suspect the crankshaft sensors. I'm surprised that you don't have any PCM codes, such as P1599 Engine Stall or Near Stall Detected, or P0339 Crankshaft Position (CKP) Sensor Circuit Intermittent. Without Pnnnn codes everything is just a guess. Other possibilities are bad plugs, ignition wires, FPR, etc.

Tell us more, like how many miles you have on the spark plugs and wires, whether you've changed the air cleaner element in recent memory, symptoms of vacuum leaks, etc. Have you had the car serviced or worked on lately? Etc.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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I agree with the crank sensors also, but I would clean the IAC and throttle body first

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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When my 00 DTS crankshaft sensor went bad it stalled for a couple weeks without any codes. Eventually it threw a code. But once cleared it would die again and not throw a code. Although mine would die while driving, not just sitting at lights so thats probably why these guys are telling you to check other items as well.

Start researching how to change the crankshaft sensors. Which ones to buy and which not to buy. And how to test which one is bad.

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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I too am not one to throw parts at a problem, but I recall this is a definate known issue on this year car, and you have the typical symptoms, & another user confirmed it doesn't throw a code. I would just have the sensors replaced. - especially if you can do it yourself, and moreso if you don't know the history of the sensors (are they the original inferior ones)

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I too am not one to throw parts at a problem, but I recall this is a definate known issue on this year car, and you have the typical symptoms, & another user confirmed it doesn't throw a code. I would just have the sensors replaced. - especially if you can do it yourself, and moreso if you don't know the history of the sensors (are they the original inferior ones)

Ditto. Crank sensors were an issue in this year. They don't always set a code but sometimes they do.

When the crank sensors are suspected BOTH must be replace, NOT one, so it does NOT matter which one is bad

Once all other possible causes are eliminated like:

bad or loose electrical connections to the crank sensors, coils, etc

low fuel pressure from all sources, check with a fuel pressure gage

bad plugs

clogged or dirty IAC or IAC port, where the IAC circuit is not able to compensate properly

dirty air filter

fuel problems (water)

weak or shorting battery or bad grounds

elimination of any codes if any

then it is logical on THIS year to replace the crank sensors, but after careful diagnosis of other possible causes

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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How do you clean the IAC throttle body on a 2000 DTS ?

Facing the throttle body from over the drivers side fender, the IAC is about 10 o'clock it looks like a silver barrel with an electrical connection on it.

It is held in place by two torx screws, use the correct torx driver and remove the screws

The IAC has an O-Ring on it, so once the screws are out gently rock it out after removing the electrical connector, be careful NOT to break the plastic tab off of the connector

Once the IAC is out, you will see a mushroom shaped pindle, clean that well, and clean the port well where it sits and look for carbon build up. do not submerge the IAC in cleaner. Use an O2 safe carb cleaner, like GM's Upper Intake Cleaner

Attached is a photo of the IAC

post-2998-129563778684_thumb.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I merged your post about the cost of crank sensors with your post were you diagnosed that the problem appeared to be the crank sensors. Its best to keep this info together for future use

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I would do this job myself.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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What is an estimated cost to replace both crankshaft sensors on my 2000 DTS. Thanks

$50-$75 a piece per sensor. If you can change the oil you can probably do this repair.

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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Share on other sites

I too am not one to throw parts at a problem, but I recall this is a definate known issue on this year car, and you have the typical symptoms, & another user confirmed it doesn't throw a code. I would just have the sensors replaced. - especially if you can do it yourself, and moreso if you don't know the history of the sensors (are they the original inferior ones)

Ditto. Crank sensors were an issue in this year. They don't always set a code but sometimes they do.

When the crank sensors are suspected BOTH must be replace, NOT one, so it does NOT matter which one is bad

Once all other possible causes are eliminated like:

bad or loose electrical connections to the crank sensors, coils, etc

low fuel pressure from all sources, check with a fuel pressure gage

bad plugs

clogged or dirty IAC or IAC port, where the IAC circuit is not able to compensate properly

dirty air filter

fuel problems (water)

weak or shorting battery or bad grounds

elimination of any codes if any

then it is logical on THIS year to replace the crank sensors, but after careful diagnosis of other possible causes

BBF can you tell me why both sensors must be changed? Absolutely not a criticism, just a desire to understand, I have no experience with them.Being capitalized it must be more than a suggestion.

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All I know is that the GURU who was a Northstar Powertrain Engineer used to say to replace both, if one is going, the other is soon to go bad.

We have always been told to replace them as a pair

See this link, for the same reasons

http://www.statracing.com/replacement/crankpositionsensor.asp

Nissan service info recommends replacing both cam and crank sensors at the same time to reduce comebacks and warranties

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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BBF will answer his own question, but since he's offline for a couple of hours, I'll speak up with my POV and say that in the model years that the crankshaft sensor vendor sold GM the bad ones, they made both of them, and that whatever pushed one over the edge isn't likley leaving the other far behind. Since most of the job is getting the car set up and accessing the front of the block where both sensors are a few inches apart, and since new parts aren't expensive, it just makes good sense to replace both.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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Exactly Jim,

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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New AC/Delco crankshaft sensors are about $50 each at Rock Auto. It's a DIY job to me, but it's your call. You might ask what the Goodwrench warranty is for this job and decide whether that is worth the $200-$300 for a GM Goodwrench tech to replace the crankshaft sensors.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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Ranger - at a dealer you are paying for the part plus the GM flat-rate manual labor time, at the Goodwrench labor rates of about $100 an hour. Or, are you talking about an over-the-counter parts cost at a dealer?

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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