When I turn off the key, everything shuts off, except the engine keeps running

50

Asked by Sep 23, 2013 at 08:27 PM about the 2005 Ford Taurus SEL

Question type: Maintenance & Repair

I parked my car, turned off the ignition and pulled out the ignition key. All of the dash indicators turned off and the tach read zero, as usual. But the engine kept running. I pulled the positive battery cable and then the negative battery cable. Engine still kept running. Finally I  pulled out the PCM relay and the engine stopped. Any ideas?

7 Answers

237,305

Check your ignition lock cylinder and ignition switch, I suspect one or both are faulty. FYI: Pulling the battery cables off the battery won't usually turn the car off.

5 of 5 people found this helpful.
50

Thank you, Tom! I suspect that the cylinder doen't come with the switch, right? If the switch is bad, should I replace the cylinder (if it comes separately)? And which part causes new keys?

1 of 1 people found this helpful.
5,660

If your altinator is faulty pulling the battery cable will shut it down because you are not getting the voltage to run the ignition system sounds to like you have a feed back from some place. You can buy the whole ignition system as on unit or just buy the tumbler system I would buy as a complete unit . check the alternator and make sure you are pushing the right voltage and amps required. But tom is right all so. Check all connections to battery and grounds if dirty that could be where your feed back is comeing from. You will get a key with it but if it is chipped there will be alot more to it the emc will need to be reprogramed to that key

1 of 1 people found this helpful.
5,660

Sorry did not read your question completly through it may just be the PCM relay that is bad

5 of 5 people found this helpful.
Best Answer
50

Ronc258, you are correct! The shop mechanic replaced the PCM relay and everything works fine now! Thank you so much!

4 of 4 people found this helpful.
80

This is so weird....this happened to me too! My car's engine still kept running even after I pulled out the keys. I am hoping it's the PCM as yours was. How much did that cost you?

4 of 4 people found this helpful.
50

I think I paid about $15 at an aftermarket parts store.

Your Answer

Add photo

Related Questions

Taurus

Looking for a Used Taurus in your area?

CarGurus has 20,434 nationwide Taurus listings starting at $699.

ZIP:

Search Ford Taurus Questions

Ford Taurus Experts

#1 Tom Demyan
Tom Demyan
Reputation 3,850
#2 lightGear
lightGear
Reputation 1,920
#2 dandyoun
dandyoun
Reputation 1,920
View All

Related Models For Sale

Used Ford Fusion
1,114 Great Deals out of 83,259 listings starting at $998
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Dodge Charger
407 Great Deals out of 28,172 listings starting at $1,988
Used Ford Explorer
946 Great Deals out of 72,518 listings starting at $1,000
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Chrysler 300
413 Great Deals out of 19,932 listings starting at $1,000
Used Ford F-150
2,195 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Malibu
948 Great Deals out of 79,664 listings starting at $1,500
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Ford Focus
539 Great Deals out of 57,171 listings starting at $1,095
Used Toyota Camry
999 Great Deals out of 90,916 listings starting at $650
Used Nissan Maxima
306 Great Deals out of 25,213 listings starting at $999
Used Ford Escape
1,394 Great Deals out of 93,563 listings starting at $1,250
Used Buick LaCrosse
226 Great Deals out of 21,522 listings starting at $1,100

Used Cars For Sale

2017 Ford Taurus SEL For Sale
2,639 listings starting at $21,149
2016 Ford Taurus SEL For Sale
9 Great Deals out of 2,105 listings starting at $15,784
2015 Ford Taurus SEL For Sale
12 Great Deals out of 514 listings starting at $11,400
2014 Ford Taurus SEL For Sale
21 Great Deals out of 633 listings starting at $8,999
2013 Ford Taurus SEL For Sale
17 Great Deals out of 544 listings starting at $8,486

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.