MY LANDY
13th October 2016, 02:56 PM
G'day all...
Righto, so after three weeks of hunting for the cause of recent power loss in my '08 Defender 2.4, I'm left scratching my lemon spread. Details below:
Completed 5000Km round trip to Central Qld fishing, towing 4.5m glass boat (a lot of highway driving at 110km/hr)
36km from home, heading up a slight incline, car lost power, had to gear down from fifth to fourth, and even then the revs dropped and car was doing it tough (ordinarily power up in fifth)
Arrived home and checked air intake, replaced air filter, checked and cleaned air flow sensor, checked turbo hoses for splits/damage, checked and replaced fuel filter, visually inspected external exhaust components for damage, checked wiring loom, taped phone with flashlight turned on under bonnet to monitor turbo actuator, checked and cleaned accelerator pedal sensor, clutch rev sensor...
Gave in and took to Graeme Cooper (worked on car for six years now) for diagnostics; only fault codes were for EGR valve (turned off with BAS remap) and HP fuel pump requiring relearn
Tried to run pump relearn but system kept rejecting it (have previously replaced fuel pump but not conducted more than three pump learns ? not more than the limited number of learns the ECU can handle as documented on here)
Put standard map in, blanked EGR and the fuel fault code cleared and pump learn was successful; turbo boost was apparently normal
Roadtest: still felt sluggish; hooked boat on and it struggled to crawl up moderate incline in second gear
Noted a subtle sloppy whistle sound before turbo kicks in (imagine whistling through loose lips) ? ANY IDEAS?
Checked (what I think) is the gasket between turbo and manifold and couldn't see any sign of it being warped/compromised (no soot etc)
Now considering the chance the catalytic converter is blocked. As mentioned, I've been running the BAS remap for years with EGR shut off but NOT blanked.
At any rate, very frustrating, hence reaching out to you mob (much more experienced) in the hope someone has any further ideas on how to troubleshoot.
Thanks
Jethro
Righto, so after three weeks of hunting for the cause of recent power loss in my '08 Defender 2.4, I'm left scratching my lemon spread. Details below:
Completed 5000Km round trip to Central Qld fishing, towing 4.5m glass boat (a lot of highway driving at 110km/hr)
36km from home, heading up a slight incline, car lost power, had to gear down from fifth to fourth, and even then the revs dropped and car was doing it tough (ordinarily power up in fifth)
Arrived home and checked air intake, replaced air filter, checked and cleaned air flow sensor, checked turbo hoses for splits/damage, checked and replaced fuel filter, visually inspected external exhaust components for damage, checked wiring loom, taped phone with flashlight turned on under bonnet to monitor turbo actuator, checked and cleaned accelerator pedal sensor, clutch rev sensor...
Gave in and took to Graeme Cooper (worked on car for six years now) for diagnostics; only fault codes were for EGR valve (turned off with BAS remap) and HP fuel pump requiring relearn
Tried to run pump relearn but system kept rejecting it (have previously replaced fuel pump but not conducted more than three pump learns ? not more than the limited number of learns the ECU can handle as documented on here)
Put standard map in, blanked EGR and the fuel fault code cleared and pump learn was successful; turbo boost was apparently normal
Roadtest: still felt sluggish; hooked boat on and it struggled to crawl up moderate incline in second gear
Noted a subtle sloppy whistle sound before turbo kicks in (imagine whistling through loose lips) ? ANY IDEAS?
Checked (what I think) is the gasket between turbo and manifold and couldn't see any sign of it being warped/compromised (no soot etc)
Now considering the chance the catalytic converter is blocked. As mentioned, I've been running the BAS remap for years with EGR shut off but NOT blanked.
At any rate, very frustrating, hence reaching out to you mob (much more experienced) in the hope someone has any further ideas on how to troubleshoot.
Thanks
Jethro