94 sputtering while driving , stalls, hard start ..check engine
Thread Starter
Instructor
Joined: Jan 2005
Posts: 218
Likes: 0
From: Hernando FL
94 sputtering while driving , stalls, hard start ..check engine
I have a 94 with 48,000 miles. Today while driving out of city..cruising at about 60-70..I could feel the engine choking.. No warnings on gages. Drove almost home..Hit gas station..Car stalled. Hard start like it was flooded. Waited a few minutes..still a little hard start..blew some dark smoke and started. While driving home..it would smooth out..then start chugging..coughing a little..threw check engine code for a few seconds..Then stalled. Same hard start. Third try..it made it home and smooth out while idling in garage. It was idling a little high on the rpms upon entering garage..then settled down. Any ideas where to start? The Check engine flicks on when it runs rough..but wont stay on to catch code.
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Check error codes. Jump pins 4 and 12 (from left side of plug) with a paperclip. Codes will show on main speedo screen when you turn the key on....don't start the car..just place key in the ON position. Record the codes displayed which will give you system to check for problems.
Does sound like Opti.
Does sound like Opti.
Pro
Joined: Oct 2012
Posts: 672
Likes: 2
From: Cheltenham, England
I have a 94 with 48,000 miles. Today while driving out of city..cruising at about 60-70..I could feel the engine choking.. No warnings on gages. Drove almost home..Hit gas station..Car stalled. Hard start like it was flooded. Waited a few minutes..still a little hard start..blew some dark smoke and started. While driving home..it would smooth out..then start chugging..coughing a little..threw check engine code for a few seconds..Then stalled. Same hard start. Third try..it made it home and smooth out while idling in garage. It was idling a little high on the rpms upon entering garage..then settled down. Any ideas where to start? The Check engine flicks on when it runs rough..but wont stay on to catch code.
Thread Starter
Instructor
Joined: Jan 2005
Posts: 218
Likes: 0
From: Hernando FL
Check error codes. Jump pins 4 and 12 (from left side of plug) with a paperclip. Codes will show on main speedo screen when you turn the key on....don't start the car..just place key in the ON position. Record the codes displayed which will give you system to check for problems.
Does sound like Opti.
Does sound like Opti.
Pro
Joined: Oct 2012
Posts: 672
Likes: 2
From: Cheltenham, England
Check engine light dont need to come on to throw codes, you wont know you have them stored until you access them. last time I checked mine I had about 4 stored, all to do with the O2 sensors, not once did the CEL come up.
Last edited by ricasso; Jul 1, 2015 at 05:01 PM.
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Pro
Joined: Oct 2012
Posts: 672
Likes: 2
From: Cheltenham, England
Fair enough mate, I've got the FSMs for the 94, it's probably in there somewhere, but right now it's 11.30 PM here and I'm the other side of a bottle of wine so wont be trawling through it at this time of night! your in the right place to get it fixed though, plenty of quality info on this forum! 
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
The 12 is normal the 15 is your temp sensor on your water pump. It can do some strange things. Look at your digital temp most likely messed up. Check the connetions or change the sensor. Do not get your opti wet.