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Chevy Venture Check Engine Light, Misfiring

91 messages,  Last post on Sep 30, 2010 at 12:14 PM

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What is this discussion about? Chevrolet Venture, Van

Messages Page 7 of 10

#52 of 91 99 venture by jasonkarch

May 14, 2008 (9:05 pm)

ok thank you very much guys i wil look into it this weekend any certin plugs you guys recomend????????????

#53 of 91 Re: 99 venture [jasonkarch] by 442dude

May 15, 2008 (5:58 am)

Replying to: jasonkarch (May 14, 2008 9:05 pm)
Nothing but platinum, preferably AC-Delco - you don't want to have to change these more than once every 100,000 miles...the P/N is in the owners manual...

#54 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [442dude] by fleastiff

May 22, 2008 (12:27 am)

Replying to: 442dude (Apr 25, 2008 10:42 am)
It may indeed be a bad , that is 'clogged', fuel injector but so far I've used I think 4 or 5 of those plastic bottles labled 'fuel injector treatment'. STP brand in black bottles and one yellow bottle that I think said Prestone Fuel Injector Treatment.
The missing and consequent stalling does not seem to be getting worse and maybe its even stalling less now, but it sure is not over.
 
IF it persists much longer, I'm going to try removing the wire from the spark plug on that number one cylinder to see if it suddenly gets more noisy or not. I know a bad coil is rare, but its possible.

#55 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [fleastiff] by fleastiff

May 29, 2008 (4:36 am)

Replying to: fleastiff (May 22, 2008 12:27 am)
That SES light continues to blink and there continues to be occasional stalling such as at a traffic light, but I've been told its running more quietly than it did before.
It still makes an awful racket while backing up though.
 
I conclude that the various fuel-injector treatments have helped but not yet cured the problem.
 
I intend to continue with the two remaining bottles that I have and then will see what my options are.

#56 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [fleastiff] by 442dude

May 29, 2008 (5:43 am)

Replying to: fleastiff (May 29, 2008 4:36 am)
Don't rule out the possibility that the injector may be faulty and not just clogged...pull the spark plug on the cylinder that's misfiring and see how it looks...might give you some info

#57 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [442dude] by fleastiff

May 29, 2008 (7:00 am)

Replying to: 442dude (May 29, 2008 5:43 am)
>the injector may be faulty and not just clogged...
That has been my secret fear: that if one or two bottles didn't cure it, ten additional bottles won't cure it either because its more than just a clogged nozzle.
>pull the spark plug on the cylinder that's misfiring and see how it looks
Well, I can look in the owner's handbook to figure out which cylinder is number one and I can compare that new plug to nearby and equally accessible spark plugs or just look at it and try to figure out if it looks clean or fouled or what. Its going to be a real project though ... no wrenches much less spark plug wrenches. A pair of pliers, a hammer, some socket wrenches ... thats about it.(And it would probably take me an hour just to find where those tools have wandered off to).

#58 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [fleastiff] by 442dude

May 29, 2008 (7:49 am)

Replying to: fleastiff (May 29, 2008 7:00 am)
# 1 cylinder is in the back on the left...you usually have to tilt the engine forward to get to the ones in the back although some do it from underneath as well.
 
Most service manuals have a picture guide to let you know what is going on with a spark plug based on what it looks like so you don't have to compare it to others...I'm sure you could find the pic online but getting to the plug would be your 1st challenge anyway. The condition of a spark plug tells a lot about how the engine is running...if the injector is leaking through, the plug will be full of carbon, if its clean & dry, its not seeing much fuel...
 
The more I read, the more it tells me that you need to pull the plug and see what's going on in there to find out the issue without guessing any more...the other check would be to check the resistance of the injector with a multimeter to check its electrical condition...I don't have the specs in front of me, would have to look them up later...

#59 of 91 Re: 2000 Chevy Venture Misfiring and SES Light. [442dude] by fleastiff

May 31, 2008 (7:02 am)

Replying to: 442dude (May 29, 2008 7:49 am)
>you usually have to tilt the engine forward to get to the ones in the back
I have a feeling that this means loosening engine mounts or something like that and then re-tightening them. This might be beyond the limits of my tools-on-hand, physical strength and courage.
 
>the other would be to check the resistance of the injector with a multimeter
Now that sounds like its a bit less arduous a task. Does one do this while the engine is running? How do I get the fuel injector naked so it can be tested?

#60 of 91 misfire problem by millwright91

Jun 19, 2008 (4:49 pm)

I have a 98 venture that has developed a bad misfire. I scanned it and all 6 are misfiring at different times. You can be driving and try to hold a speed and it goes to misfiring. Speed up quick and the misfiring goes away. Tested ignition mod. and orielly says it is ok.

#61 of 91 Re: misfire problem [millwright91] by 442dude

Jun 20, 2008 (5:49 am)

Replying to: millwright91 (Jun 19, 2008 4:49 pm)
Have you ever changed plugs & wires?

Messages Page 7 of 10

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