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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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V40 2001 1.9D lack of powerViews : 19912 Replies : 8Users Viewing This Thread : |
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Mar 18th, 2011, 01:55 | #1 |
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V40 2001 1.9D lack of power
Hi there, Can anyone help? Ive just bought a 2001 V40 1.9D that has a total lack of power.I can put my foot to the floor and you are Lucky it to get to go over 3000 rpm (eventually) alarming if you try pulling away from traffic lights etc. When I bought it I noticed the Mass air flow meter was unplugged, so I believed that to be the fault as well as the lack of an air filter element, so I replaced both. However after further investigation the glow plug relay is unplugged, I also found after removing the engine cover off that the throttle shut off housing has been broken and repaired with fibre glass, insulation tape and wood screws!!!! and finally underneath that is what looks like an idle speed control valve with a grey vw/audi plug disconnected.In light of all this messing I'm concerned that the vacuum hoses have probably been incorrectly connected or bi-passed. Can anyone offer advice and photos of the correct routing of the vac pipes? Thanks for any help
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Mar 19th, 2011, 01:33 | #2 |
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My brothers '03 was suffering from a similar problem, foot to the floor, none of the usual low down power and took an age to pick up. So, after cleaning my own EGR Valve (see also Biotoxic's thread), I thought by cleaning the EGR valve on his car it may solve the problem. Cleaned the valve (there was a mountain of grime/sludge) reassembled everything and went for a spin, no change...Doh!!!
Unplugged the MAF sensor/meter, took it for a spin and power somewhat restored, so, it seems his was suffering from a duff sensor/meter (he hasn't replaced it yet because it's near €300 from the dealer). No fault code shown on cheap code reader. Did you replace the MAF sensor with a genuine Siemens part # 5WK9 632 (Volvo P/N 30887504)? Some generic (eBay) sensors won't give correct readings.
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Mar 19th, 2011, 14:42 | #3 |
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i know its not the same motor but as baffler has just said cheap maf`s of ebay arn`t worth a toss tbh i bought one for my old 2001 rover 45 diesel , it lasted 1 day then ran worse than the original , however once unplugged it ran fine but just restricted rpm over 4000 rpm .
it may be an idea to get a garage to read any stored codes . rick. |
Mar 19th, 2011, 18:40 | #4 |
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These any help?
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Mar 20th, 2011, 23:19 | #5 |
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Yeah great thanks, Iv stripped the old girl down awaiting parts. Ive now also found when wondering why the thermostat housing was leaking that the stat bein taken out and not replaced!! Ow my bank account!!!!
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Mar 21st, 2011, 19:06 | #6 |
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Hi folks,
Right Ive cleaned the EGR vavle, replaced the broken throttle shut off housing, replaced the MAF sensor, replaced the missing thermostat and air cleaner element. I checked the routing of the vac hoses. Now other than there is a black electronic unit underneath the vacuum storage cannister that does not have a pipe going to the the multiplug end I'm stumped. The car still refuses to rev above 2500 rpm. Is there a throttle position sensor? Or has anyone got any other ideas? |
Mar 23rd, 2011, 22:28 | #7 |
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Anyone??????
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May 5th, 2011, 22:17 | #8 | |
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I am not sure if pm reply reached you so I post it here, Try this one.
If you cleaned your EGR valve and Inlet manifold, if the car struggles to accelerate from low rpms, if you have that DPI filter( or what ever that name was) You can fix that sluggishness by driving on motorway. Quote:
Last edited by Biotoxic; May 5th, 2011 at 22:21. Reason: added last sentence |
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May 7th, 2011, 16:00 | #9 |
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another suggestion.... make a note of your radio code and disconnect battery over night, this should reset/restart ecu when you put battery back in a car.. maybe because of that removed egr part and other disconnected cables ecu is not letting you rev over 2500 rpm... This is just a suggestion, if someone else could confirm this then go ahead with that. I thought about this on my way home
Removing battery overnight should clear ecu memory, so if there is any previously stored fault or error in ecu( wich happened after you bought your car) it should clear. So if you will be able to rev past 2500 rpm's that would mean than one of the part you changed was faulty and ecu limited power because of that. Give as a shout how it goes after that Last edited by Biotoxic; May 7th, 2011 at 16:06. |
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