Question about 1993 Oldsmobile Cutlass Ciera

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1993 old cutlass ciera failed inspection for HC. car was tuned up hc dropped but not low enough

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Install Full Synthetic Oil
New Exhaust Converter
New O2 Sensor
New Air Filter

Posted on Mar 21, 2011

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Posted on Jan 02, 2017

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Failed hc ppm& feul evap test


If I read your post right, you are over on Hc and that is all? Check the air filter, check the injectors. You are either not getting enough air or are getting too much fuel.

Apr 02, 2014 | 1993 Saturn SL

1 Answer

Failed hc ppm


Use Google & study Vehicle Exhaust Emission
You'll be there for weeks,if you even understand it all
Could type in: High HC Exhaust Emissions or vehicle
hydro carbon problems
When a vehicle gets that old your close to mechanical
issues that aren't worth fixing

Jul 18, 2013 | 1993 Nissan NX

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1995 Honda Civc failed Emmisions test


Emission test by codes reader? or smog? Any codes?

May 22, 2017 | 1998 Honda Civic

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Cant put belt on pully will not move more then 1 in.1993 olds. cutlass ciera


You have to pull the belt tensioner back far enough to the belt over the last pulley.Usally a 3/8 drive rachet is all you need.

May 17, 2011 | 1993 Oldsmobile Cutlass Ciera

2 Answers

My 1997 Honda Civic failed it's Emissions Test. See below the ASM Emission Test Results. What do you suggest I do to get the car to pass the smog test? ASM Emission Test Results: 15mph - RPM = 1587...


Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

Apr 05, 2011 | 1997 Honda Civic

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1991 olds Cutlass Ciera. 3.3l, failed the NO emission test. Results: HC ppm 12 .......limit 62 CO % 0.09 ..... limit 0.35 NO ppm 948 ..... limit 700 Before testing changed plugs, wires,PCV,oil. Also had...


Since your cat was replaced you should be looking at fuel problems...even gas cap seal....check fuel pressure,fuel regulator,and evap system.>canister or purge solinoid,o2 senser...high nox is caused by the cat or fuel problems on these engines...high pressure in the combustion chamber...lean condition>air leak on hoses,or high compression caused by carbon build up ...there is no EGR on this car so don't waste time looking for it...hope this points you to your problem

Mar 14, 2010 | 1991 Oldsmobile Cutlass Ciera

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2.3 dohc wont pass smog


Did you do a full tune up?
Do a compression test and check for any cyclinder that is low in PSI.
Look of wet plug and oil coated plug(s).
== Which item CO,NOx,Hc is failing?
You may need to repose to add information.
Use a plug non-fouler / protector on the weak cylinder will help if HC is just shy from the passing limit.
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Mar 05, 2010 | 1993 Honda Prelude

1 Answer

How to remove the transmission from 1993 olds cutlass ciera


drop the engine and trans out as a unit with the sub frame.

Sep 12, 2009 | 1993 Oldsmobile Cutlass Ciera

2 Answers

Emissions failing with high NOx


Change the lambda/oxygen sensor in the exhaust.

May 21, 2009 | 1994 Mitsubishi Galant

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