2001 DTS Need a little help here

1713 Views 11 Replies 6 Participants Last post by 2001-DTS, Mar 9, 2011

2001-DTS

Discussion Starter · Mar 4, 2011

Hey guys/girls, so first things first im new here so my problem MIGHT have been solved already, it would be great to get the answer sooon though

Basicly, my problem is this. I have a 2001 DTS it started out running great but then it started over heating (needle passes center mark) and the car would start smoking..smelling alot like burning oil/coolant.
Got that fixed after changing the thermal stat and it started running normal again
However, the car still smokes, the smoke smells somewhat like coolant and the coolant level IS infact going down. Along with the coolant going down the oil slowly does too. :hmm:
And NOW the check engine light came on, as the car stops too, you can feel a slight misfire so though came in..we changed all 8 spark plugs with brand new bosh platnum 4's..yet we can still feel misfire and check engine light is still on :helpless:

Some Questions!!
First of all, is it normal for t he car to run with the temp. Right in the center?
Secondly, does anyone have ANY idea whats going on with my car and how i can fix, or reduce this problem?

THANKS , i know its alot to read but it will help me TONS

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JimD

· #2 · Mar 4, 2011 (Edited)

:welcome:

2001-DTS said:
....Got that fixed after changing the thermal stat and it started running normal again
However, the car still smokes, the smoke smells somewhat like coolant and the coolant level IS infact going down.

Look for an external leak (can be difficult to see because of road draft and evaporation removing the evidence). The water pump cartridge drive shaft seal is not an unusual failure.

Along with the coolant going down the oil slowly does too.

Not related.

And NOW the check engine light came on....we changed all 8 spark plugs with brand new bosh platnum 4's..yet we can still feel misfire and check engine light is still on.

Keep your spark plug tools handy because ACDelco 41-987s are the only plugs you want in that engine.

You need to know which Diagnostic Trouble Codes are toggling the service engine light. Here's how to display your codes on your Driver Information Center (pay attention to codes with a P prefix):
http://www.cadillacforums.com/forums/cadillac-tech-tips/172511-how-pull-codes-98-04-sevilles.html

Expect to see a P0300 code which is not very helpful; you already know you have a misfire. There is a very recent thread in the Seville/Eldorado section that talks about carbon tracking and replacing the boots that connect the plug to the ignition coil assembly.

...is it normal for t he car to run with the temp. Right in the center?

Yes.

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JimD

· #10 · Mar 6, 2011

2001-DTS said:
Another thing, i read that the Bosh platnum 2/4 are great for any car?

Sounds like Bosch marketing language to me.

Just wondering why the ACDelco 41-987s are the only type and if its hurting the engine having bosh 4's

They are the only plugs that experienced Northstar drivers use with any confidence. Your money plus your car equals your choice.

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