freelander misfire
in [Car Maintenance]
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From: Tim.. on 8 Jun 2007 05:19 "chunkybear via CarKB.com" <u14753(a)uwe> wrote in message news:735898b130c71(a)uwe... > Tim.. wrote: >>>>> Hi all, recently posted about misfiring freelander. Got it checked out >>>>> at lr today. all ok on the hg front but got a rather puzzled look from >>>>> the tech that hooked it up for diagnosis. it appears the o-ring in >>>>> between throttle housing and inlet manifiold was missing!! charged >>>>> £60 for the hour! would an o-ring really cause all this hassle? >> >>I did mention the inlet manifold gaskets / o rings in my first post!! >> >>tim.. > still palying up though when u take foot off the gas the revs dont drop Give the ECU more time to relearn its adaptive settings (a battery disconnect may speed the process) as it will still be thinking the gasket is gone.. If it gets no better, have the TPS checked for high voltage at closed throttle (assuming the throttle cable is allowing the throttle to completely closed- this was another recall item!!) Tim. ..
From: chunkybear via CarKB.com on 8 Jun 2007 06:26 Tim.. wrote: >>>>>> Hi all, recently posted about misfiring freelander. Got it checked out >>>>>> at lr today. all ok on the hg front but got a rather puzzled look from >[quoted text clipped - 6 lines] >>>tim.. >> still palying up though when u take foot off the gas the revs dont drop > >Give the ECU more time to relearn its adaptive settings (a battery >disconnect may speed the process) as it will still be thinking the gasket is >gone.. > >If it gets no better, have the TPS checked for high voltage at closed >throttle (assuming the throttle cable is allowing the throttle to completely >closed- this was another recall item!!) > >Tim. >. Its settled down a bit now. still idling like sh.t. gone back to same as before. its been compression tested and the head gasket is also fine. also had inlet manifold gasket changed. sounds like air getting in somewhere checked all the hoses/pipes and all seem ok. sounds fine when cold, exhaust starts spluttering when warm (more noticable at exhaust tail pipe.) also goes ok when under load or at revs. any ideas....? -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/uk-car-maintenance/200706/1
From: MrCheerful on 8 Jun 2007 18:53 "chunkybear via CarKB.com" <u14753(a)uwe> wrote in message news:73631b4a6a61b(a)uwe... > Tim.. wrote: >>>>>>> Hi all, recently posted about misfiring freelander. Got it checked >>>>>>> out >>>>>>> at lr today. all ok on the hg front but got a rather puzzled look >>>>>>> from >>[quoted text clipped - 6 lines] >>>>tim.. >>> still palying up though when u take foot off the gas the revs dont drop >> >>Give the ECU more time to relearn its adaptive settings (a battery >>disconnect may speed the process) as it will still be thinking the gasket >>is >>gone.. >> >>If it gets no better, have the TPS checked for high voltage at closed >>throttle (assuming the throttle cable is allowing the throttle to >>completely >>closed- this was another recall item!!) >> >>Tim. >>. > Its settled down a bit now. still idling like sh.t. gone back to same as > before. its been compression tested and the head gasket is also fine. also > had inlet manifold gasket changed. sounds like air getting in somewhere > checked all the hoses/pipes and all seem ok. sounds fine when cold, > exhaust > starts spluttering when warm (more noticable at exhaust tail pipe.) also > goes > ok when under load or at revs. any ideas....? > > -- > Message posted via CarKB.com > http://www.carkb.com/Uwe/Forums.aspx/uk-car-maintenance/200706/1 > go round it all with a spray can of carb cleaner, spray every possible leak area with the engine running, if it changes the idle you may have found a leak.
From: chunkybear via CarKB.com on 9 Jun 2007 03:37 MrCheerful wrote: >>>>>>>> Hi all, recently posted about misfiring freelander. Got it checked >>>>>>>> out >[quoted text clipped - 24 lines] >> goes >> ok when under load or at revs. any ideas....? > >go round it all with a spray can of carb cleaner, spray every possible leak >area with the engine running, if it changes the idle you may have found a >leak. Will give this a go, let you know how it goes... a friend of mine came round last night to have a look. seems to think the exhaust might be partially blocked, probably the cat end. He fitted two new sensors while he was at it (crank sensor and intake air temp sensor). He reckoned these are prone to playing up on this engine. (parts free works at LR). -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/uk-car-maintenance/200706/1
From: Tim.. on 9 Jun 2007 04:40 "chunkybear via CarKB.com" <u14753(a)uwe> wrote in message news:736e32f71cb23(a)uwe... > MrCheerful wrote: >>>>>>>>> Hi all, recently posted about misfiring freelander. Got it checked >>>>>>>>> out >>[quoted text clipped - 24 lines] >>> goes >>> ok when under load or at revs. any ideas....? >> >>go round it all with a spray can of carb cleaner, spray every possible >>leak >>area with the engine running, if it changes the idle you may have found a >>leak. > Will give this a go, let you know how it goes... > a friend of mine came round last night to have a look. seems to think the > exhaust might be partially blocked, probably the cat end. He fitted two > new > sensors while he was at it (crank sensor and intake air temp sensor). He > reckoned these are prone to playing up on this engine. (parts free works > at > LR). A blocked /restricted exhaust will normally allow the engine to start and run normally at smaller throttle openings, as gas output is less than the restriction. Power will tail off (or not increase) with a wider throttle opening under load- especially in the higher gears. If the restriction is large then I have known bucking and spluttering under throttle, but the engine will again rev freely with a smaller throttle. Revving in neutral is generally fine. If the car has secondary air injection or pulse air system, I've known the pipes to be blown off... From your description, your problem doesnt sound like a blocked exhaust... Tim. ..
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