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 Posted: Tue Jun 07, 2011 1:34 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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i car has faid mot retest on emisions there realy realy high how do i get them down ? just found out its a 1.1 on logbook and a 1.4 engine fitted to 1.1 ecu and injectors can any one help
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Posted: Tue Jun 07, 2011 1:39 am |
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Joined: Feb 07, 2010
Posts: 1792
Trade Rating: +12
Location: Bridgnorth, Nr Wolverhampton
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youve just found out?
you say its a retest? did it pass emissions the first time round?
how far out was it?
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Posted: Tue Jun 07, 2011 1:43 am |
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Joined: Jan 06, 2011
Posts: 1850
Trade Rating: +8
Location: Wiltshire
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Rag the s**t out of it and get the cat nice and hot before you take it in for a retest ?
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| Renault Twingo 1.2 GT TCE, AP Coilovers, 25mm Hubcentric Wheel Spacers (Rear), 16" Speedline Turini Alloy Wheels, Renault Sport Cup Spoiler,, BMC F1 Panel Filter, Forge Dump Valve, Front Mounted Intercooler, K-Tec SS Cat-Back Exhaust System, K-Tec Decat Pipe, K-Tec Remap. 136.6 BHP 154.3 lbs/ft. | |
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Posted: Tue Jun 07, 2011 1:53 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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i raged the s**t out of it temp was well up and the mot tester had to rev it uo to 5000 rmp just to get it to drop the emisions and when it droped to 2000 it went bk high
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Posted: Tue Jun 07, 2011 1:54 am |
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Joined: Feb 07, 2010
Posts: 5574
Trade Rating: +11
Location: UK
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what was the reading and/or how far was it out? do you have the paper?
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Posted: Tue Jun 07, 2011 2:05 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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it failed on fast idle test
fast idle test no1
2500-3000 rpm
co .30% 0.56%
hc 200ppm 171ppm
^0.97 - 103 1022
2nd test fast idle
2500-3000 rpm
co 0.30% 0.30%
hc 200ppm 272ppm
^0.97-103 1.057
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Posted: Tue Jun 07, 2011 2:43 am |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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| Kersh wrote: |
| you say its a retest? did it pass emissions the first time round? |
What fuel are you using? Shell v-power is the best to fill up with before the MOT.
Failing that get some Redex fuel treatment to give the engine a good clean.
When was the last service? May find that the air filter and dirty plugs are adding to the problem
What year is the car, might be ready for a new CAT.
Was it tested as a 1.1 or a 1.4? Your max permitted of 0.30 and 200 are the same as my 1.4. Couldn't say what a 1.1 allows.
What else did it fail on to need a retest in the first place?
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Posted: Tue Jun 07, 2011 2:59 am |
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Joined: Feb 12, 2010
Posts: 4308
Trade Rating: +62
Location: Partying with the Info Shufflers
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My old one did this to me before, ended up buying a new cat but was still out, so then got some redex which kind of sorted the problem so tried taking it for a lang drive out before mot which got it to fly through!
Not all places give the car enough time to warm up so it can be out, give redex a try first then rag it
GL
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Posted: Tue Jun 07, 2011 3:24 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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i there i have put a full bottle of redex in been in 3 days ago it was realy hot car had worm up just thinking could it be down to the 1.4 engine running on 1.1 ecu
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Posted: Tue Jun 07, 2011 4:04 am |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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I left my car at the garage all day for the MOT, so not sure if it's still the probe up the tailpipe or if it is all measured electronically.
I suppose in theory the engine should be running leaner with a 1.1 ecu fitted, although the computer could be confused as it is needing more fuel to fill the cylinder. I don't suppose you will know if the car feels underpowered or not.
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Posted: Tue Jun 07, 2011 4:15 am |
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Joined: Feb 07, 2010
Posts: 1730
Trade Rating: +9
Location: Northants
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What else wasnt changed other than the ecu?
what cat does it have on it at the moment, sensors etc
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| WIP: Black 1.6 16v XSi
Beauté Noire | |
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Posted: Tue Jun 07, 2011 5:46 am |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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looks like you got an air leak.
your o2 reading is quite high.
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Posted: Tue Jun 07, 2011 6:10 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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the car has 1.4 engine with 1.1 ecu and injectors exhaust thats all i know and car feels under powerd ?
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Posted: Tue Jun 07, 2011 6:11 am |
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Joined: Apr 10, 2011
Posts: 38
Trade Rating: 0
Location: barnsley
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the car has 1.4 engine with 1.1 ecu and injectors exhaust thats all i know and car feels under powerd ? could i put 1.4 injectors would that help it on a 1.1 ecu ?
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