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sensor ignition smoke idle

Sent to Car Experts September 14 09:39 PM

i have a 92 grand am 3.3 the idle is crazy goes up and down constantly, only starts when it wants, checked the basic stuff new wires/plugs getting new coils but not yet,also blows smoke diagnostics says ignition coils, park nuetral sensor,and lean or rich exhaust or something like that any ideas

Customer (name blocked for privacy)
Status:  Closed   Value: $5
Info Request
September 14 10:30 PM (50 minutes and 27 seconds later)
         
REPLIED to Info RequestCheck Mark
when was the last time the fuel filter was replaced?
has anyone tried cleaning out the throttle body using a good throttle body cleaner? not carb. cleaner.
what color is the smoke and does it have a bitter smell?
does it usually happen after the engine has warmed up?

Disabled American Veterans (DAV), remembering those who've served.
Chris -- Machinist -- 100% Positive Feedback on 28 Car Accepts
6 prior ASE cert.,32 GM certifications, 7yrs in Army as Mechanic, w/22 yrs experience
Reply
September 15 7:10 AM (8 hours and 39 minutes and 58 seconds later)
         
i just changed the gas tank and filter less than 2weeks ago but i cant drive the car yet so its just at home, the smoke was blue, and very black, and had a strong odor, havnt cleaned the t.b. good yet,also when you apply brake the car stalls or tries too. only started once since running diagnostics, hasnt smoked much and seemed to run better but then started doing that stuff again except smoking for some reason its not smoking much, for now
Customer (name blocked for privacy)
Info Request
September 15 7:47 AM (37 minutes and 36 seconds later)
         
REPLIED to Info RequestCheck Mark

You have an extremely rich condition that you have to find.

Is the check engine light coming on?



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Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2716 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
Reply
September 15 8:21 AM (33 minutes and 44 seconds later)
         
Reply to Hammer Time's Post: yes check engine light is on, also abs light comes on and off with a knocking noise, is it rich cuz coils or malfunctioning
Customer (name blocked for privacy)
Info Request
September 15 8:27 AM (5 minutes and 59 seconds later)
         
REPLIED to Info RequestCheck Mark

No it's not.

You need to get the codes read.

What's the year, make, model and engine size?



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Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2716 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
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September 15 8:30 AM (3 minutes and 10 seconds later)
         
Reply to Hammer Time's Post: 1992 pontiac grand am 3.3v-6 the codes said 3 out of 4 ignition coil codes(quad control or something), lean/rich exhaust, and park nuetral sensor/circut codes where 27,28,29,31,44 last i checked
Customer (name blocked for privacy)
Reply
September 15 10:38 AM (2 hours and 7 minutes and 43 seconds later)
         
Reply to Chris's Post: replaced filter and tank a week ago, sprayed some tb cleaner in there but not real good, smoke is black and blue , the black may be from sitting, car has sat for a couple years,exhaust has a harsh smell, all happens when vehicle is started til its shut off, smoke seems to be going away recently but may ony be temporary not sure why it stopped
Customer (name blocked for privacy)
Answer
September 16 1:22 AM (14 hours and 44 minutes and 8 seconds later)
         
ACCEPTEDCheck Mark
blue smoke is caused from burning oil, which is most likely coming from the valve stem seals. when the car sat, the seals became dry and oil can leak past them into the cylinders. a good product that can help that problem is Lucas engine stabilizer. it's about 10 bucks, but for your engine you should only need half the bottle and it will help to rejuvenate the seals.
as for the check engine light and the trouble codes, they are designed to tell you where the problem MAY be, not that this is the ACTUAL problem.
try unplugging the O2 sensor prior to start up. a weak or sluggish O2 sensor can cause the engine rpms to fluctuate. with the O2 sensor unplugged the computer will go into a limp-in mode and the engine should idle better. if it does, the problem is in the O2 sensor. a new one costs around 50 bucks. the check engine light will come on and the computer will set a code for no O2 sensor signal. the codes can be cleared by removing the negative battery cable for at least a minute.
hope this helps, good luck.

Disabled American Veterans (DAV), remembering those who've served.
Chris -- Machinist -- 100% Positive Feedback on 28 Car Accepts
6 prior ASE cert.,32 GM certifications, 7yrs in Army as Mechanic, w/22 yrs experience
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