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#2220734 - 04/03/11 10:22 AM Check engine light flashing/engine sputtering bad
aquariuscsm Online   content


Registered: 12/30/06
Posts: 8911
Loc: South Texas,USA
My gf`s 1998 Olds 88 3800 Series II V6). Check engine light is flashing and the engine is sputtering/missing really bad. What in the world could be causing this? I`ve never had this happen on any car I`ve owned before.

A side note,the water pump is slightly leaking,but surely this has no correlation,right?


Edited by aquariuscsm (04/03/11 10:22 AM)
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Syntec 10W40/Fram Ultra
Amsoil MTG(tranny)
Amsoil 80W90 GL5(rear diff)
Mobil 1 ATF
Redline Water Wetter

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#2220738 - 04/03/11 10:24 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
eljefino Online   content


Registered: 06/15/03
Posts: 22955
Loc: ME
Flashing CEL means misfire. Usually one of the basics: spark, fuel, or compression.

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#2220743 - 04/03/11 10:28 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
RF Overlord Offline


Registered: 11/08/03
Posts: 2916
Loc: Cape Cod, MA
Get the codes read. Most FLAPS will do it for free.

Get the codes read; we can help you better diagnose the issue if we know the codes.

Did I mention that you should get the codes read?
_________________________
Supercharged '03 Mercury Marauder - Trilogy Motorsports #61
PP 5W-30 / MC FL820S

Y2K Grand Marquis GS - daily driver
M1 5W-30 / MC FL820S

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#2220744 - 04/03/11 10:28 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
Drew99GT Online   happy


Registered: 10/11/02
Posts: 20269
Loc: Colorado Springs
Funny; I just put a new fuel injector in my Dad's 1999 Olds 88 with the same problem! But it could be any number of things like eljefino indicated. Check engine light flashing means get it fixed ASAP as a misfire is detected and raw fuel is going through the exhaust. Could plug the converter.

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#2220746 - 04/03/11 10:29 AM Re: Check engine light flashing/engine sputtering bad [Re: RF Overlord]
Drew99GT Online   happy


Registered: 10/11/02
Posts: 20269
Loc: Colorado Springs
Originally Posted By: RF Overlord
Get the codes read. Most FLAPS will do it for free.

Get the codes read; we can help you better diagnose the issue if we know the codes.

Did I mention that you should get the codes read?


The code will likely be a misfire detected in one cylinder. It won't help diagnose the problem.

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#2220750 - 04/03/11 10:32 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
FowVay Offline


Registered: 06/02/02
Posts: 2090
Loc: Southeastern USA
Ignition coil problem??
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#2220756 - 04/03/11 10:34 AM Re: Check engine light flashing/engine sputtering bad [Re: Drew99GT]
eljefino Online   content


Registered: 06/15/03
Posts: 22955
Loc: ME
Originally Posted By: Drew99GT
Originally Posted By: RF Overlord
Get the codes read. Most FLAPS will do it for free.

Get the codes read; we can help you better diagnose the issue if we know the codes.

Did I mention that you should get the codes read?


The code will likely be a misfire detected in one cylinder. It won't help diagnose the problem.


If it's a misfire on two cylinders that share a coil, that hints pretty strongly at that ignition issue...

A single cylinder might more likely be an injector; I had that on my 97 silhouette 3.4.

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#2220764 - 04/03/11 10:42 AM Re: Check engine light flashing/engine sputtering bad [Re: Drew99GT]
RF Overlord Offline


Registered: 11/08/03
Posts: 2916
Loc: Cape Cod, MA
Originally Posted By: Drew99GT
The code will likely be a misfire detected in one cylinder. It won't help diagnose the problem.
Sure it will...it might eliminate a vacuum leak. It could also point to an injector circuit problem, or it may confirm that it IS a misfire on one cylinder. Either way, it will give the OP a direction so he doesn't start blindly throwing parts at an unknown problem.
_________________________
Supercharged '03 Mercury Marauder - Trilogy Motorsports #61
PP 5W-30 / MC FL820S

Y2K Grand Marquis GS - daily driver
M1 5W-30 / MC FL820S

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#2220784 - 04/03/11 11:03 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
Cause4Alarm Offline


Registered: 03/04/11
Posts: 293
Loc: Maine
These engines like to eat intake gaskets....it'll throw only misfire and system lean codes
_________________________
96 Tahoe 4x4
Engine: Total 9000 0w30, K&N oil filter
Trans: Valvoline full synth dex vi
Transfer case: Amsoil uni atf
Diffs: Amsoil severe gear 75w90

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#2220789 - 04/03/11 11:10 AM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
aquariuscsm Online   content


Registered: 12/30/06
Posts: 8911
Loc: South Texas,USA
I`m also going to drain that orange [censored] and replace it with green glycol when I replace the water pump.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Syntec 10W40/Fram Ultra
Amsoil MTG(tranny)
Amsoil 80W90 GL5(rear diff)
Mobil 1 ATF
Redline Water Wetter

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#2220838 - 04/03/11 12:37 PM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
Cause4Alarm Offline


Registered: 03/04/11
Posts: 293
Loc: Maine
Don't put old school coolant in there or kiss you're new water pump goodbye
_________________________
96 Tahoe 4x4
Engine: Total 9000 0w30, K&N oil filter
Trans: Valvoline full synth dex vi
Transfer case: Amsoil uni atf
Diffs: Amsoil severe gear 75w90

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#2220853 - 04/03/11 12:53 PM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
Since this is BOB IS THE OIL GUY the problem is to change the oil. If you used synthetic oil there never would be any engine problems. What does the code read? the code will lead you to a problem.
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Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#2220890 - 04/03/11 01:30 PM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
adamjeeps Offline


Registered: 08/27/09
Posts: 43
Loc: Virginia
Could be a bad fuel pump.
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07 RX350 M1 EP 5W30
07 Chevy Avalanche M1 EP 5W30
99 Grand Prix 3800 183,000 and counting M1 HM 10W30

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#2221053 - 04/03/11 05:17 PM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
Like they said, you gotta get those codes read first.
Why not use the troubleshooting system that is built in?

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#2221202 - 04/03/11 07:43 PM Re: Check engine light flashing/engine sputtering bad [Re: aquariuscsm]
aquariuscsm Online   content


Registered: 12/30/06
Posts: 8911
Loc: South Texas,USA
Got the codes. Bad sparkplug.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Syntec 10W40/Fram Ultra
Amsoil MTG(tranny)
Amsoil 80W90 GL5(rear diff)
Mobil 1 ATF
Redline Water Wetter

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