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400 Series General Forum for the Volvo 440, 460 and 480 cars |
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High emissionsViews : 3742 Replies : 23Users Viewing This Thread : |
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Feb 13th, 2011, 10:56 | #1 |
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High emissions
My Volvo 440 1.7si auto 1993 failed on emissions. The mechanic said this can be adjusted using the c.o. potentiometer. But he couldnt find it. He looked through the Haynes manual and it's not where it says it should be. He then said he thinks my engine has been replaced with a 2lt version. I looked for the engine number; when I got home; where it says to look in my owners manual. On my ownership papers my engine number has 1 letter then 12 numbers. Where I looked it had 1 letter and 6 numbers. Is this right? Is the Mechanic right?
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Feb 13th, 2011, 14:19 | #2 |
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Have a look on the front of the engine block, next to where the dipstick tube goes into the block, there may be a small metal plate about 1 inch x 2 inch with the engine series code stamped on it,
mine says B20F, if yours does it is the 2.0i engine. Last edited by andy100; Feb 13th, 2011 at 17:15. |
Feb 13th, 2011, 20:30 | #3 |
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If yours has a cat converter and Lambda sensor then yours doesn't have the pot. meter on top of the air filter (or around there). If it's a 1.7i then the engine code for the catless version is B18EP while the cat. Lambda version is B18FP (basically same engines, just the latter has a cat converter and lambda sensor fitted, power is 102hp instead of 106hp.)
Why did it fail on emissions? Too high CO/HC (running rich) or high NOx (running lean)? Was it good on idle or was it bad in the whole rev range? |
Feb 16th, 2011, 14:01 | #4 |
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Emissions results
Thanx for your replies. Fast Idle Test. CO failed. Max Limit 0.300, mine 0.552. HC passed. Lambda passed. Second Fast Idle Test. CO failed. mine 0.624. Passed the other two. Natural Idle Test. CO failed. Max limit 0.500, mine 0.585.
Looked by the dipstick, which is where i looked last time. The number began with what looked like a P then had 598441 after it. Not quite the B18! |
Feb 16th, 2011, 14:52 | #5 |
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You can check it on the V(ehilcle)I(dentification)N(umber) plate as follows:
Example: XLBEX313ESC593307 Position Example Purpose 1-3 XLB Manufacturer code 4 E Car type 5 X Safety standard 6-7 31 Engine type 8 3 Transmission type 9 E Verification 10 S Modelyear 11 C Factory 12-17 593307 Chassisnumber Engine type: 01 = B18K-102 02 = B18KP-111 03 = B18E(S)-105 04 = B18E(D)-104 05 = B18FT(M)-107 06 = B18FT(M)-107 07 = B18K(D)-102 14 = B18E-104 17 = B16F-109 18 = B18F-106 19 = B18FT-107 31 = B20F-208
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Feb 16th, 2011, 23:28 | #6 |
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even easier way to read the VIN go to volvo 480 club europe homepage ( only the forum is goosed) and click on vin reader type in your vin and it will tell you what your engine is .
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Feb 18th, 2011, 12:08 | #7 |
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Thanx for the help with the VIN number. Any-one have any idea on the high emissions? Dont want to spends loads trying to work out what it could be.
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Feb 18th, 2011, 23:44 | #8 |
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If the air filter and spark plugs haven't been changed then best to start with those. If that doesn't help then best to check the lambda sond to see if it's working properly. After taking the car out for a spin check the spark plugs and see what colour they are, they should be light brownish. Have you noticed an increase in fuel consumption and is the engine temp gauge working properly? Have you tried checking any fault codes?
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Feb 20th, 2011, 22:46 | #9 |
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Will check air filter and spark plugs tomorrow. Cant take car out as its out of MOT. So cant take it anywhere for any-one to test/check anything. Has always been heavy on fuel consumption. About a month ago the temp shot up into the red. the oil light flickered and the petrol guage went down. Had plenty of oil water and petrol. Its done this a few times since. Asked at garage. They'd never heard of it before.
Last edited by pottypaula; Feb 20th, 2011 at 22:53. |
Feb 21st, 2011, 10:11 | #10 |
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(Just my opinion on what possible problems there may be):
If engine temp sensor is giving a false reading then that may cause high fuel consumption (also if the temp gauge doesn't show that the engine reaches running temp then the thermostat might always be open and that too can cause higher fuel consumption). If the lambda sond isn't working properly, then that too. If the spark plugs are worn or dist. cap and rotor then that as well. A dirty air filter can cause similar effects. If alls well and the engine runs fine yet the emission reading isn't good then it may be the cat. converter. There the things i can think of, hope you're able to find out what the problem is. |
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