Yellow check engine light on - running rough. Ideas?


HIRISC

GT Owner
Mark II Lifetime
Mar 14, 2007
259
Minneapolis, MN
'Bout sums it up.

Stumbled a couple times driving yesterday, then light came on.

Would run ok for a bit, then stumble again.

Turned off engine, then re-started. Light stayed on (unlike my BMW's that seem to self clear).

I know it could be a number of things, but your experience appreciated.

Thanks

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BlackICE

GT Owner
Nov 2, 2005
1,416
SF Bay Area in California
Could be a lot of things, best way is to get an OBDII code reader to find out what the light is about. If you have an SCT tuner that can read the codes too.
 

shelbyelite

PERMANENTLY BANNED
May 10, 2007
1
Fuel Filler neck IF it was trying to die on you when coming to a stop light or stop sign. If it was just stumbling, next though would be bad gas. Your car is a simple pulley / tune / catback exhaust. Should not have anything to do with those simple mods as you have been running them now for about 2 years without issue. O2 sensors is another though, but reading the codes with an OBDII will tell you where to look
 

Kayvan

GT Owner
Jul 13, 2006
4,782
Also, check battery strap ground....low voltage tripped light once

Also, bad gas
 

tmcphail

GT Owner/Vendor
Mark IV Lifetime
Apr 24, 2006
4,102
St Augustine, Florida
Use your SCT device to read DTC in the vehicle info area. That will highlight what is the trigger.
 

HIRISC

GT Owner
Mark II Lifetime
Mar 14, 2007
259
Minneapolis, MN
Thanks all.

Runs fine at idle/approaching lights...

I'll plug her in later and see if that sheds any light.
 
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33Bravo

GT Owner
Mark II Lifetime
Nov 3, 2006
688
Minneapolis, MN
I have a tuner that reads the codes if you need one.
 

HIRISC

GT Owner
Mark II Lifetime
Mar 14, 2007
259
Minneapolis, MN
I have a tuner that reads the codes if you need one.

Thanks Bill.. I have the one we got when Torrie tuned us up.
 

GT JEFF

GT Owner
Oct 11, 2011
10
Minneapolis
I had similar problem scanned it with my snap on scanner and a constellation of codes.Re did the battery ground
and cleared codes it was fine if you need it scanned pm me.
 

33Bravo

GT Owner
Mark II Lifetime
Nov 3, 2006
688
Minneapolis, MN
Thanks Bill.. I have the one we got when Torrie tuned us up.

Of course. My memory is good. Its just short...
 

HIRISC

GT Owner
Mark II Lifetime
Mar 14, 2007
259
Minneapolis, MN
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tmcphail

GT Owner/Vendor
Mark IV Lifetime
Apr 24, 2006
4,102
St Augustine, Florida
 

otis

GT Owner
Mark II Lifetime
Nov 13, 2011
349
Stillwater, MN
Sounds like we need Rich and Dennis back this spring? Mine's got a noise I'm afraid are the half shaft bolts are broken.
Hope yours is something simple like the ground wire.

Rob
 

HIRISC

GT Owner
Mark II Lifetime
Mar 14, 2007
259
Minneapolis, MN

Thanks Torrie.

Sounds like we need Rich and Dennis back this spring? Mine's got a noise I'm afraid are the half shaft bolts are broken. Hope yours is something simple like the ground wire. Rob

Perhaps.

Per the advice of the guys above, I checked the battery connections. The positive was fairly loose. Tightened and took a short drive. No stumble. Fingers crossed.

That issue potentially fixed, it appears my power steering pump is going/gone. Whining and leaking. Jason just had his done locally. Probably will do the same. At this point, my GT season is probably over in favor of driving some other stuff.

I'd be up for some upgrades if they come back.
 
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