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View Full Version : 3.0 dohc merc mystique surge


angel50
03-02-2014, 03:46 PM
Grannies car has a problem...when cold it wants to pull thru stop signs...I put it in neutral and rev it slim bit and it's fine...also struggles going up hills unless I drop it into that gear manually...any ideas???
John4cam
03-02-2014, 04:48 PM
Ignition issue? If it's chugging under load and clearing up in the higher rpms that's my guess. CEL on?
angel50
03-02-2014, 05:04 PM
It's on but haven't read it yet... It was on before and said o2 sensor...so I changed but no difference and light came back on now...never thought of ignition...hmmm..had timing belt changed and cam pos. Sensor,,plugs,,o2...
John4cam
03-02-2014, 05:12 PM
Is CEL flashing? I'd scan the comp. for code and go from there....
PaxtonShelby
03-02-2014, 05:15 PM
Is that a symptom of a bad throttle position sensor?
angel50
03-02-2014, 05:23 PM
Not flashing just stays on...vacuum maybe???
angel50
03-02-2014, 05:24 PM
Almost feels like tranny vacuum but its probably something simple like an unplugged sensor or something...
CollinsPC
03-02-2014, 05:50 PM
Does this have the stock 2.5 or does it have a transplanted 3.0?

I don't have my Contour any longer, but still am a member here; http://www.contour.org/ceg-vb/forum.php

There are a lot of helpful members there.
angel50
03-02-2014, 05:55 PM
Oh damn...I put 3.0 sorry....yes 2.5...don't know what I was thinking...lol
John4cam
03-02-2014, 07:06 PM
The whole reason for the CEL is to check the code and point you on the right direction....Kinda shooting in the dark with a bunch of guesses.
angel50
03-02-2014, 07:14 PM
Yeah I know but it said o2 sensor...I changed it and it's still has the problem and light came back on...just getting some more ideas...
John4cam
03-02-2014, 07:19 PM
Not trying to start an argument, trying to help....but you mentioned you haven't read it yet. Could be something totally different.
angel50
03-02-2014, 07:32 PM
Yeah Im gonna have to dig alil bit...I used advances reader...I wish I had snap on reader...
Silverhatch
03-02-2014, 08:07 PM
my sct reads mine.
angel50
03-02-2014, 08:28 PM
Yeah I will be buying 1 soon...I had the innova but some shady character stole it from my garage...I've been waiting to buy 1 when I get a new terminator...
juice_man_86
03-03-2014, 02:20 AM
Timing belt was changed...maybe a tooth out

Sent from my Moto G
angel50
03-03-2014, 12:17 PM
Cat was clogged...as soon as I tap it I could hear the junk in it...