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DTS ignition not engaging


STS Scott

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Hey everyone,

My Dad's venerable 2001 DTS has been giving him frustration lately with an igniton issue. As the ignition key is turned, all of the electronics boot up normaly, and then there is a random time-delay until the starter engages...sometimes not at all. It began as just a momentary delay, and it has now begun to refuse to start at all occasionally.

Any ideas? I was thinking something within the auto-start feature where the starter continues to crank after you've let go of the key. Could that unit be faulty?

Thanks,

Scott

" ...'took my Cobra down t' the track, hitched to the back o' my Cadillac..."

- Jan & Dean, 'hey little cobra'

Scott

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First clean the battery connections especially the positive cable, the positive cable is comprised of two cables with a lead lug between them take off the insulator and clean that joint

Then take the battery to get it load tested at a sears

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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.....then there is a random time-delay until the starter engages...sometimes not at all. It began as just a momentary delay, and it has now begun to refuse to start at all occasionally.
There are several components in the underhood fuse/relay box that MIGHT have corroded/oxidized blade contacts.

Any ideas?
Yes.

I was thinking something within the auto-start feature where the starter continues to crank after you've let go of the key. Could that unit be faulty?
Here is my idea; whatever the "auto-start feature" is, it is not something that GM/Cadillac designed for the vehicle. If there is an aftermarket remote-start device installed in the car, that would be the place to start your diagnosis.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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Jim made me rethink this, what do you mean by auto-start feature, you mean over-run feature of the starter where you hold the key too long or do you mean a REMOTE starter?

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 could be wrong, but...I think he is talking about...

When you turn the key to the "START" position...the starter engages and "STAYS" engaged until the engine starts...even when you release the key from the "START" position.

Thats the way mine works.

All you have to do to start it is just quickly bump the key to the start position and then release the key.

The starter continues turning until the engine starts and then the starter quits.

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Hmm, I have not experienced that feature yet, Thanks 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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Folks, folks, folks. Take a deep breath, please. And I will try to do the same.

Comparing the operation of a 1998 era Deville to a 2000 - 2004 Deville to a 2005+ Deville is risky (at best). Watermelons and raisins.

GM pushes the technology envelope with Cadillac Motor Division. Many changes appear when the model up-dates. The singular example that comes to mind is the arrival (and rapid demise) of the "night vision" infrared system option in 2000.

My point is, the original poster was referring to a 2000 - 2004 model Deville. I can locate no reference to an "auto-start" feature on that series (2000 - 2004) of Deville vehicles (and if I found such a "feature", I would disable it ASAP). For the record, my name is on the title of a 2004 Deville (DTS) and I have the Helm Service Manual for that car.

Auto-start in not GM/Cadillac terminology.

The original poster can clear this up, but I hold to the "aftermarket" theory.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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Ok yes, let me clarify. I was refering to the "bump start" feature. I just wasn't sure of the official terminology. The car is not modified in anyway with aftermarket accessories like self starters. Thanks for the input guys, I will have my Dad check the connections at the battery terminals and fuses.

" ...'took my Cobra down t' the track, hitched to the back o' my Cadillac..."

- Jan & Dean, 'hey little cobra'

Scott

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Folks, folks, folks. Take a deep breath, please. And I will try to do the same.

Comparing the operation of a 1998 era Deville to a 2000 - 2004 Deville to a 2005+ Deville is risky (at best). Watermelons and raisins.

GM pushes the technology envelope with Cadillac Motor Division. Many changes appear when the model up-dates. The singular example that comes to mind is the arrival (and rapid demise) of the "night vision" infrared system option in 2000.

My point is, the original poster was referring to a 2000 - 2004 model Deville. I can locate no reference to an "auto-start" feature on that series (2000 - 2004) of Deville vehicles (and if I found such a "feature", I would disable it ASAP). For the record, my name is on the title of a 2004 Deville (DTS) and I have the Helm Service Manual for that car.

Auto-start in not GM/Cadillac terminology.

The original poster can clear this up, but I hold to the "aftermarket" theory.

Jim,

I think the term is PCM controlled start - My '05 Deville has it - I don't need to hold the key in the start position until the engine starts. All I have to do is turn the key to "Start" long enough for the starter to engage and let it go. The once the engine starts, the PCM knows to disengage the starter. I think the PCM controlled start began around 2002 or so.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Interesting feature, I guess that us how the push button start became feasible

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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Interesting feature, I guess that us how the push button start became feasible

If I remember right...my Uncle's '41 had push button start.

You turned on the ignition and then pushed the pretty chrome button on the dash.

:lol::lol::lol::lol:

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LOL.... SO true, my mom's 49 Mercury has a push button!

Hi Mom...

MomMerc.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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.... I will have my Dad check the connections at the battery terminals and fuses.

I would try a spare key first.

In the underhood fuse box there is 30A START circuit breaker, a START 1 relay, and a 10A PCM IGN fuse (that protects other circuits as well).

And the Park-Neutral safety switch will be part of the logic chain.

I did not intend to use so much bandwidth over a bit of terminology!!

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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I did not intend to use so much bandwidth over a bit of terminology!!

When we are using the written word to communicate, vs actually "TALKING" to each other...sometimes terms need to be clarified, so that we are all on the same page, and understand what is being talked about.

I, for one, never even "THOUGHT" about an aftermarket starter system till you mentioned it.

It very well "COULD" of had one that was faulty.

Have a great day...

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That PCM start seems to be something GM introduced on at least several of their products. My 2002 Chevy Venture has it too. I guess an earlier version of this prevented us from grinding the starter when the car is already running. BBF - when your car is running, turn the key to engage the starter, and nothing happens. I use this to exit diagnostic mode all the time.

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