Question about 2004 Cadillac CTS

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Cadillac CTS shutdown while driving

In the last 15 months my car shutdown 5 times while driving - usually after the first mile never after this. We brought it to the dealer - who could not find anything wrong. We are afraid to drive the car because we are old and do not have the power to steer and brake without engine assist. Thanks

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1 Answer

I would say most likely the ignition coils are bad

The dealer made their money when they sold it to you

They can fix it, but don't have very high standards for the
techs or no supervision,something !

Almost half the people that come to this site can't get a vehicle
even diagnosed at a dealer

The technology is passing everyone by

You have ignition coils on each cylinder

They only last about 6 to 7 years & will go
into failsafe if they misfire bad enough,that
is called a Class A misfire,you won't pick those
up in the shop with test equipment,maybe on a scope,
but I doubt many mechanics use one or know how

Have to just walk a new coil,road test or replace the coils,
when you have those issues

The main problem is vehicles are only driven
Never tested during the year & no one knows
that you have to do anything other than change
the oil & wait for them to break down & that is what
is happening

I would change all the ignition coils 6 or 8, replace the
front oxygen sensors & clean the maf sensor & replace
the spark plugs every 3 years,those I would have done
the week I bought it

I hope you changed ALL the fluids, power steering,trans,
brake & rear axle.

Need to road test with a professional scan tool to look at all data
& look at cylinder misfire count,fuel trim & see that the 8 monitors
run clear,you need them okey, in order to go to inspection & pass

Posted on Mar 25, 2014


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SOURCE: Cadillac CTS will not start Starting Disabled - Remove Key mess

the first thing is to make sure battery is good, if the computers in car dont have the right voltage the act crazy, they do things like the problem your having,the computer cant operate correctly with half or 3/4s power.start with battery and connection at battery. good luck,

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