Misfire/dead cylinder

Asked by May 15, 2016 at 08:23 PM about the 2005 Mercury Sable GS

Question type: Maintenance & Repair

I have a 2005 Mercury Sable with a 3.0 ohv
pushrod engine with about 180,000. We got it back
from the shop for a timing cover gasket
replacement and it ran great for about 3 days.
Today it died when we came to a stop. Then took
awhile to restart. Got about 30 miles down the
road it died again. Very rough idle even worse in
drive, big loss of power. Began checking it out to
find a cracked coil. Replaced the coil but now
cylinders 3 and 4 are dead at the coil, no spark at
all. Pulled the plugs recapped and cleaned them.
Number 3 plug was wet so there is fuel getting to
it. Didn't pull 4 just yet but assuming the same
thing. What is causing a cylinders 3 and 4 to not
fire on the coil. Also returned the new coil went to
a more trusted auto store and got another coil only
to have the same problem. Help!!!

6 Answers

11,355

The Ford EECV vehicle computer is having a problem with the drivers that control the grounding circuit which sends a signal to the coil to fire to cyl 3 and cyl 4 have it read for codes you should get a result close to this: P0303 or P0304~~P0351 - Ignition Coil A Primary/Secondary Circuit~~ P0352 - Ignition Coil B Primary/Secondary Circuit~~ P0353 - Ignition Coil C Primary/Secondary Circuit

I wish I could post a picture of the printout of the reading I had that done today too but the codes are as follows PO300 random misfire detected PO171 bank 1 combustion too lean PO174 bank 2 combustion too lean PO303 cylinder 3 misfire PO352 ign coil 2 primary secondary circuit malfunction PO353 ign coil 3 primary secondary circuit malfunction PO300 random misfire detected PO171 PO174 PO352 Seems like they just started repeating

Is the eecv replaceable by itself or is it built in the pcm?

39,825

EEC-V is the PCM, it stands for Electronic Engine Control version 5. Some people that post on here make things sound more technical than necessary which many times causes confusion.

1 out of 1 people think this is helpful.

Okay thanks for your help really didn't want to hear that but hey at least I have a better idea what is going on.

So I'm guessing this is definitely pointing at a computer problem then

Your Answer

Add photo

Related Questions

  • I have repeating misfires in cylinder 2 and a misfire in first 1000 rpms and can no longer go over 45 mph. Came out of nowhere. 4 answers

    I had the same problem 6 months ago. Then had plugs, wires, and coil pack changed. The coil pack had a crack in it. It never misfired again while i was driving, but always misfired when in idle. The...

    2003 Mercury Sable LS

    -

    Maintenance & Repair

  • 2002 Mercury Sable 24V DOHC Error Code 2 answers

    I have a 2002 Mercury Sable 24V DOHC with 62K miles on it. The engine light came on this morning - first blinking and now is on as soon as I start the car. Took the car to Autozone and had them run...

    2002 Mercury Sable LS

    -

    Maintenance & Repair

  • Cylinder head 9 answers

    I'm stuck whether I should send my head Gaskets to a machine shop or not I got them pulled already and I were planning on just cleaning the surfaces and putting new gaskets on will this work or wou...

    2002 Mercury Sable LS

    -

    Maintenance & Repair

  • Problem with rough idle 3 answers

    I have a 2000 Mercury Sable with a 3.0L DOHC V6 Duratec engine. Sometimes at cold start up it run really rough and will cause the check engine light to come on. I have taken it to a parts store and ...

    2000 Mercury Sable LS Wagon

    -

    Maintenance & Repair

  • does this car come in a 4 cylinder 3 answers

    1990 Mercury Sable 4 Dr GS Sedan

    -

    General

Sable

Looking for a Used Sable in your area?

CarGurus has 1,140 nationwide Sable listings starting at $2,499.

ZIP:

Search Mercury Sable Questions

Mercury Sable Experts

#1 JP1956
JP1956
Reputation 630
#2 Tom Demyan
Tom Demyan
Reputation 540
#3 Guy Outland
Guy Outland
Reputation 360
View All

Related Models For Sale

Used Ford Taurus
264 Great Deals out of 20,626 listings starting at $1,500
Used Chevrolet Impala
799 Great Deals out of 34,708 listings starting at $799
Used Mercury Grand Marquis
24 Great Deals out of 2,174 listings starting at $1,995
Used Mercury Milan
27 Great Deals out of 1,200 listings starting at $1,495
Used Buick LeSabre
9 Great Deals out of 2,349 listings starting at $1,795
Used Ford Focus
746 Great Deals out of 59,013 listings starting at $995
Used Toyota Camry
1,086 Great Deals out of 98,042 listings starting at $1,250
Used Ford Fusion
1,102 Great Deals out of 78,361 listings starting at $1,250
Used Nissan Altima
1,096 Great Deals out of 83,210 listings starting at $670
Used Honda Accord
887 Great Deals out of 82,090 listings starting at $999
Used Ford Five Hundred
952 listings starting at $2,500
Used Ford F-150
2,880 Great Deals out of 212,656 listings starting at $1,000
Used Toyota Avalon
275 Great Deals out of 13,793 listings starting at $2,000
Used Buick LaCrosse
312 Great Deals out of 22,571 listings starting at $1,500
Used Honda CR-V
900 Great Deals out of 61,520 listings starting at $1,200