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Old 08-11-2008, 12:25 PM   #1
nitroussaturn
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Default misfire?

my old lady calls me and tells em the check engine light came on after filling up at the gas station on our 04 redline.
she brings it home 2 me i pull all 10 codes and their all cylinder misfire codes,1thru 6,wtf?
cleared them and im gonna attempt to drive it in 2 work..any thoughts on what would cause this?
im hoping just bad gas

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Old 08-11-2008, 08:05 PM   #2
alank
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2004 VUE 2.2L
Default Re: misfire?

Make sure that the gas cap is installed and that it is tight. A loose gas cap will throw a check engine light.

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Old 08-11-2008, 09:20 PM   #3
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Default Re: misfire?

Quote:
Originally Posted by alank View Post
Make sure that the gas cap is installed and that it is tight. A loose gas cap will throw a check engine light.
That wouldn't cause all cylinders to misfire. The engine would continue to run fine and throw some evap related code. Bad gas would be the low hanging fruit in this case. The only other thing that would cause all the cylinders to randomly have issues on that engine would be a dodgy cam or crank sensor, but those usually work or don't work....not usually a sometimes problem.

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Old 08-11-2008, 11:51 PM   #4
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Default Re: misfire?

it ran great for me today..codes never came back,lol

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Old 08-12-2008, 04:54 AM   #5
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Default Re: misfire?

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Originally Posted by nitroussaturn View Post
it ran great for me today..codes never came back,lol
Cool. Sounds like you might have just gotten some contaminated/bad gas then.

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Old 08-15-2008, 12:29 AM   #6
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Default Re: misfire?

lol i wish,codes came back truck is running like crap,wtf?

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Old 08-15-2008, 07:26 AM   #7
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Default Re: misfire?

Thats funny you say that, i had the same thing happen to me the early this week. I have a 02 vue (4cyl 5 speed) Put gas in brought it home the next time i try to start it runs like crap. I took it to a mechanic yesterday they ran the codes said it was a generic code saying cylinder misfire but cannot get anymore information unless i take it to a saturn dealership. I took the plugs out yesterday checked them out and put them back in, no difference. I just replaced the plugs with Bosch plugs about 2 months ago too! Anyone else have any ideas! Can a plug just blow and you wont be able to tell by looking at it?

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Old 08-15-2008, 11:53 AM   #8
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Default Re: misfire?

Quote:
Originally Posted by Brock4u View Post
Thats funny you say that, i had the same thing happen to me the early this week. I have a 02 vue (4cyl 5 speed) Put gas in brought it home the next time i try to start it runs like crap. I took it to a mechanic yesterday they ran the codes said it was a generic code saying cylinder misfire but cannot get anymore information unless i take it to a saturn dealership. I took the plugs out yesterday checked them out and put them back in, no difference. I just replaced the plugs with Bosch plugs about 2 months ago too! Anyone else have any ideas! Can a plug just blow and you wont be able to tell by looking at it?
If a plug is not firing it will quickly get fouled and you'll see the difference pretty easily between that plug and the others.

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Old 08-15-2008, 11:43 PM   #9
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Default Re: misfire?

any ideas for me?,,plugs are 3500k old.and the truck ran fine up to 2 - 3 days ago...just drove it 2600 mile roundtrip to indiana right before this started happening...any thoughts?suggestions?

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Old 08-16-2008, 08:04 AM   #10
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Default Re: misfire?

Which V6 engine? What codes? Generalizing on all six cylinders misfiring without posting codes just leads to speculation on anyone's part like guessing on bad gas. One of the keys to support is supplying accurate information; year, model, engine, auto/manual transmission, recent maintenance, modifications, DTC codes, etc.. Car info entered in your personal profile eliminates repeating this and leaves you to supply recent issues to describe an overall picture of your problem.

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Old 08-16-2008, 07:09 PM   #11
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Default Re: misfire?

2004 saturn vue redline 99k honda 3.5,14 codes 1,2,3,4,5, and 6 cylinder missfire.also multiple cylinder misfire code

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Old 08-16-2008, 07:42 PM   #12
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Default Re: misfire?

There are 4 components to a cylinder firing: fuel, air, spark, and timing. Those are pretty generic codes. Check the fuel pressure at the rail. Then check your air filter, you've already checked the plugs. Timing is controlled by the ECU and cam/crank sensors (which usually either works or not...intermittent failure is unusual). Start with the basics and gradually work your way down to the specifics. Have you changed the timing belt yet? It's due (as is a valve lash check/adjustment).

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Old 08-16-2008, 09:05 PM   #13
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Default Re: misfire?

what should base fuel pressure be at idle?

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Old 08-16-2008, 10:25 PM   #14
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Default Re: misfire?

I wonder if there's a clogged cat and not anything with sensors. Although it can be fuel related like a plugged filter strangling fuel flow, a simple pressure test and flow check should eliminate fuel/pressure problems. Multiple cylinder misfires not associated to any one cylinder bank points to just a few sensors that all six cylinders are affected by; map, iat, maf, cps, ECM, main intake manifold leak.

...
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*There's more to a/c than just a few cans of refrigerant*
*There's more to brakes than just replacing parts*

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Old 08-20-2008, 07:31 AM   #15
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Default Re: misfire?

Mine is doing something similar but it runs only on two cylinders, i had a misfire code so i reaplced the plugs, that didnt work so i am going to be replacing the coils and the ignition module tonight. Try that. Those are known to go bad on these vehicles, there was a recall on the modules.

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Old 08-20-2008, 11:53 AM   #16
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Default Re: misfire?

i also changed the plugs yesterday..and it still does it.
guess i have to pay the stealership to diagnose it..
i cant afford to just start changing parts untill i know thats what will fix it.

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Old 09-22-2010, 10:41 PM   #17
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Default Re: misfire?

sorry to bump an old thread, but I'm having a similar problem. What fixed it for you?

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Old 04-24-2014, 01:41 PM   #18
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Default Re: misfire?

fault code

Have a Saturn vue 3.0 v6 2006... its doing multiple misfiring. any suggest on to fix this problem

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Old 04-24-2014, 03:33 PM   #19
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Default Re: misfire?

Quote:
Originally Posted by ysmyle View Post
fault code

Have a Saturn vue 3.0 v6 2006... its doing multiple misfiring. any suggest on to fix this problem
If you have a 2006 Vue with V6 - the engine should be 3.5L.

Service manual suggests checking/adjusting valve lash at 100,000 miles.

A few members solved multiple cylinder misfire by adjusting exhaust valve lash.

Others used fuel treatment and claimed success.

It appears you have a way to check/clear codes? I'd do a clear and then check when misfire happens ... first start in AM, after engine warms, etc. You should also realize about 10 other engine parameters are stored in freeze frame when the code is set. Try to retrieve those numbers before clearing the codes.

My daughters 07 Vue with 3.5 and 112,000 miles was having multiple misfires on first start of day. I checked the usual suspects ... fuel pressure, battery, EGR valve, vacuum, PCV, EVAP, plugs, changed timing belt.

The problem persisted ... I've not adjusted valves but she's not had a misfire since she started turning key to ON/RUN and leaving until IPC lights go out - and then cranking engine.

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Old 04-24-2014, 04:00 PM   #20
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Default Re: misfire?

Quote:
Originally Posted by Brock4u View Post
Thats funny you say that, i had the same thing happen to me the early this week. I have a 02 vue (4cyl 5 speed) Put gas in brought it home the next time i try to start it runs like crap. I took it to a mechanic yesterday they ran the codes said it was a generic code saying cylinder misfire but cannot get anymore information unless i take it to a saturn dealership. I took the plugs out yesterday checked them out and put them back in, no difference. I just replaced the plugs with Bosch plugs about 2 months ago too! Anyone else have any ideas! Can a plug just blow and you wont be able to tell by looking at it?
You're going to a cheap mechanic. You can purchase software to get all that same information. The shop just has to invest in their business. Its pretty hard to argue against buying this for GM products since there are so many; unless shop says "BMW" on the side.

-Robert

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