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

246,725

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.
5,760

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

2 of 2 people found this helpful.
5,760

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.
90

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?

5 of 5 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 18,914 nationwide Taurus listings starting at $1,499.

ZIP:

Search Ford Taurus Questions

Ford Taurus Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,020
#2 dandyoun
dandyoun
Reputation 1,970
#3 lightGear
lightGear
Reputation 1,940
View All

Related Models For Sale

Used Ford Fusion
1,252 Great Deals out of 76,318 listings starting at $1,500
Used Chevrolet Impala
575 Great Deals out of 35,566 listings starting at $899
Used Dodge Charger
521 Great Deals out of 28,643 listings starting at $2,500
Used Ford Explorer
891 Great Deals out of 64,219 listings starting at $799
Used Ford Mustang
683 Great Deals out of 44,710 listings starting at $1,500
Used Ford F-150
2,121 Great Deals out of 193,348 listings starting at $290
Used Chevrolet Malibu
1,156 Great Deals out of 79,585 listings starting at $2,500
Used Honda Accord
1,043 Great Deals out of 67,783 listings starting at $1,000
Used Chrysler 300
389 Great Deals out of 18,081 listings starting at $1,000
Used Toyota Camry
1,194 Great Deals out of 83,788 listings starting at $750
Used Ford Focus
793 Great Deals out of 54,535 listings starting at $1,200
Used Nissan Maxima
334 Great Deals out of 24,260 listings starting at $1,999
Used Nissan Altima
1,260 Great Deals out of 75,203 listings starting at $1,695
Used Ford Escape
1,279 Great Deals out of 84,685 listings starting at $950

Used Cars For Sale

2017 Ford Taurus SEL For Sale
2,908 listings starting at $20,842
2016 Ford Taurus SEL For Sale
3 Great Deals out of 1,267 listings starting at $13,991
2015 Ford Taurus SEL For Sale
12 Great Deals out of 462 listings starting at $11,497
2014 Ford Taurus SEL For Sale
26 Great Deals out of 641 listings starting at $9,490
2013 Ford Taurus SEL For Sale
25 Great Deals out of 563 listings starting at $6,900

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.