Emission light on

Tiny
JUDITH BELLI
  • MEMBER
  • 2007 FORD TAURUS
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
About Two weeks ago, auto not having much power when driving. Son did complete tune-up replacing spark plugs, wires, coil. It is running 80% better but still rough. It was checked on machine at a auto supply store which indicated numbers four and five plugs not working 100%.

Forgot to mention emission light will not go off
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Friday, January 5th, 2018 AT 9:59 AM

11 Replies

Tiny
MHPAUTOS
  • EXPERT
Check compression's, check for vacuum leak at inlet manifold, check injectors if all else is okay, start here.
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Friday, January 5th, 2018 AT 6:04 PM
Tiny
JUDITH BELLI
  • MEMBER
Appreciate your response. Will check out all these possibilities. Thank you so much.
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Saturday, January 6th, 2018 AT 8:10 AM
Tiny
KEN
  • ADMIN
Hello,

To me it sounds like you may have a blown head gasket between to cylinders which a compression test will confirm. (two low cylinders)

Here is a guide to help you get the job done.

https://www.2carpros.com/articles/how-to-test-engine-compression

This guide can help as well

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Monday, January 8th, 2018 AT 2:00 PM
Tiny
JUDITH BELLI
  • MEMBER
Thought it might be a blown head gasket; car getting checked out today with mechanic at local service garage. Will let you know. Thank you for all your responses.
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Monday, January 8th, 2018 AT 2:17 PM
Tiny
JUDITH BELLI
  • MEMBER
Just found out that the coil we bought & put on car was defective & has to be brought back to AutoZone. Supposedly auto is working fine now. Haven't got bill yet. Thanks for all your responses.
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Tuesday, January 9th, 2018 AT 10:39 AM
Tiny
KEN
  • ADMIN
Thanks for getting back to us. Autozone parts can sometimes be a little dodgy. Please let us know how much it costs please

Cheers, Ken
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Tuesday, January 9th, 2018 AT 11:46 AM
Tiny
JUDITH BELLI
  • MEMBER
Well, the first coil was about $63 & took 2 min to install. Now don't know what service garage will charge when they were supposed to jut check out problem & let us know, not repair. Very upset!
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Tuesday, January 9th, 2018 AT 12:15 PM
Tiny
KEN
  • ADMIN
It's just car stuff, it will pass. When doing the job next time get OEM parts they cost more but worth it. Amazon has good prices on OEM parts.
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Tuesday, January 9th, 2018 AT 1:19 PM
Tiny
JUDITH BELLI
  • MEMBER
The cost of "checking problem" & repair came to $137. Awful amount since the cost of coil was $63 & 2 min to install by son himself. Oh well. Already in debt up to ears.
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Tuesday, January 9th, 2018 AT 2:31 PM
Tiny
KEN
  • ADMIN
Sorry about that, at least the car is fixed and the questions are free so that works. Use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers, Ken
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Wednesday, January 10th, 2018 AT 11:32 AM
Tiny
JUDITH BELLI
  • MEMBER
I agree & I will!
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Wednesday, January 10th, 2018 AT 1:02 PM

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