1999 Cadillac Seville Stalls at Stop

1999 CADILLAC STS
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JBLOW1223
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  • 1 POST
Any suggestions on why my car 99 Cadillac STS keeps cutting off after I come to a stop with no warnings? Normally just starts right back up, once it took approximately 3 tries to start up.
Nov 25, 2006 at 4:47 AM
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JOE315
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  • 5 POSTS
try to change the throttling positing sensor it not expensive it about $30 bucks and easy to change
Jan 7, 2008 at 2:32 PM
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BUZZSAW
  • ✓Experienced Mechanic
  • 1,198 POSTS
[quote:c32b6778be="jblow1223"]Any suggestions on why my car 99 Cadillac STS keeps cutting off after I come to a stop with no warnings? Normally just starts right back up, once it took approximately 3 tries to start up.[/quote:c32b6778be]

have the codes scaned, the no warnings to me would indicate crank sensors, do not replace the tps
Jan 8, 2008 at 6:45 PM
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CLIFF43X
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[quote:807540e432="jblow1223"]Any suggestions on why my car 99 Cadillac STS keeps cutting off after I come to a stop with no warnings? Normally just starts right back up, once it took approximately 3 tries to start up.[/quote:807540e432]

My 1999 Seville STS was doing the same thing. Finally it cut off and wouldn't restart. Had it taken to the dealer and they found the problem to be in the ignition switch. After the switch was repaced it hasn't happened again and it has been 2 years.
Hope this helps.
Apr 27, 2008 at 9:09 PM
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CLEVELANDD
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  • 2 POSTS
hey cliff wanted to know how much that ignition switch ran you?
Jul 30, 2008 at 12:01 PM
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Suggested Repair

Scan for diagnostic codes. Stalling with no warning lights points to a crankshaft position sensor; do not replace the throttle position sensor first. Another owner with the same symptom reported a failed ignition switch that was fixed by replacement.

Conversation Summary

The owner of a 1999 Cadillac Seville STS reported the engine cutting off after stops with no warning lights, then usually restarting. One reply suggested a throttle position sensor. An expert advised scanning for codes, suspected a crank sensor, and said not to replace the TPS. Another owner said the same stalling was traced to a bad ignition switch and stopped after replacement.

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