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1997 chevy malibu 3.1 runs rough


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cliffduris
Novice

Sep 24, 2014, 2:11 PM

Post #1 of 13 (1447 views)
1997 chevy malibu 3.1 runs rough Sign In

1997 chevy malibu 3.1 with 142,000mi new sparkplugs & wires gapped at 060 and 5,000 to 6,000 ohms at all coils however acts like it is missing runs awhile but turns off


(This post was edited by cliffduris on Sep 24, 2014, 2:22 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 24, 2014, 3:24 PM

Post #2 of 13 (1414 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

Have it scanned for codes and post the code numbers here.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



cliffduris
Novice

Sep 24, 2014, 4:02 PM

Post #3 of 13 (1411 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

P0300 before plugs&wires


Hammer Time
Ultimate Carjunky / Moderator
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Sep 24, 2014, 4:20 PM

Post #4 of 13 (1410 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

Any history, any work recently done? Any overheating?

What led up to this?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



cliffduris
Novice

Sep 24, 2014, 4:47 PM

Post #5 of 13 (1407 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

no overheating the tensioner pulley broke i replaced it new , both idler pulleys new and new serpantene belt. also less than a year ago a new fuelpump&filter, frequent oil changes must tell you code was before the problem had plugs&wires ordered they arrived the day my wife broke down towed home hoping they were the solution now she runs for a couple of minutes and shuts down.Im tring not to run her to much afraid of expensive repairs


(This post was edited by cliffduris on Sep 24, 2014, 4:54 PM)


Discretesignals
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Sep 24, 2014, 4:49 PM

Post #6 of 13 (1404 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

I'd say your going to need to get hold of an enhanced scan tool to look at misfire counters to see which cylinders are skipping.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Sep 24, 2014, 4:49 PM)


cliffduris
Novice

Sep 29, 2014, 2:03 PM

Post #7 of 13 (1360 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

ok borrowed a scanner tool now the code is p0305 and p0305pd which means mutiple misfires on #5 it also lists misfire,fuel,comp,catlyst,evap,o2 snsr,o2 htr,egr Also on sat i ordered both crank sensors and a cam sensor.


Hammer Time
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Sep 29, 2014, 3:18 PM

Post #8 of 13 (1359 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In


Quote
Also on sat i ordered both crank sensors and a cam sensor.


And why would you do that. I don't recall seeing anything that indicated those.

You have a misfire on cylinder #5 for sure and maybe others. The scan tool you borrowed is not what we were referring to. You need a professional level tool that shows actual misfire counts on specific cylinders. For now you need to find out what is wrong with #5, whether it be spark, fuel or compression.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



cliffduris
Novice

Sep 29, 2014, 7:50 PM

Post #9 of 13 (1347 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

The #5 spark plug wire had a hole arcing at the exhaust shroud noticed when replacing them ordered the three sensors from RA for 30 bucks could not hurt I thought. Wink However I borrowed the tool from a buddy at work.I also already pulled the PS pump for the cam, and the harmonic balancer crank pulley to access the cam sensor will replace and see what happens crank2 right at backside of the block easy access!!


Hammer Time
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Sep 30, 2014, 2:17 AM

Post #10 of 13 (1343 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In


Quote
ordered the three sensors from RA for 30 bucks could not hurt I thought.


Of course it can if they are not installed correctly which is very possible.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



cliffduris
Novice

Oct 11, 2014, 9:55 AM

Post #11 of 13 (1305 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

well i installed the sensors and now it runs for a few seconds then cuts off. so i borrowed an advanced tool from az. now there are no codes probably due to the fact the battery went dead had to hook up the charger. started it a few times still runs rough,now the scanner says misfire monitor-ok, fuel system mon-ok,comp component-ok, catalyst-inc, evap system mon-inc, oxygen sens mon-inc, oxygen sens htr-inc, and a handfull of n/a's


Hammer Time
Ultimate Carjunky / Moderator
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Oct 11, 2014, 10:04 AM

Post #12 of 13 (1304 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

That is not an advanced scan tool. AZ has nothing even close to what was recommended here. You're comparing $500 tools to a $5,000 tool. You can't get the data you needs with that tool.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Oct 11, 2014, 2:19 PM

Post #13 of 13 (1295 views)
Re: 1997 chevy malibu 3.1 runs rough Sign In

I think it is time you had a licensed reputable repair shop look at this. You just throwing a bunch of parts at it and in the process making more problems.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.






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