Tyrone Disco
New Member
2000 Discovery TD5 auto surging when you floor it from low revs. Have replaced fuel filter and used injector cleaners but no better. Drive steady it's fine up till 2500RPM then flat with no torque beyond. Any ideas welcome.
ratty
I'm not special I'm limited edition
2000 Discovery TD5 auto surging when you floor it from low revs. Have replaced fuel filter and used injector cleaners but no better. Drive steady it's fine up till 2500RPM then flat with no torque beyond. Any ideas welcome.
sounds like a sensor fault to me. Are you using any oil or coolant?
Tyrone Disco
New Member
no. just checked inlet pipe to turbo and small pipes to wastegate actuator and all clear, also arm to wastegate moving freely but still. I'm assuming this is normal. no lights on dash at all so debating spending the money to put on diagnostics ?
ratty
I'm not special I'm limited edition
I had it with mine and it turned out to be a faulty coolant temp sensor. It was correctly showing the temp though.
Tyrone Disco
New Member
Diagnostics it is, before I replace half the car. Thanks for the feedback.
ratty
I'm not special I'm limited edition
Whereabouts are you located?
Diagnostics are the way to go although they may not show up the fault. Some sensors will still show they are working even if thy are faulty.
eightinavee
Well-Known Member
Its overboosting,simple as that.Most likely the wastegate sticking on the turbo,or the modulator solenoid has failed or one of the little pressure pipes has blown off.2000 Discovery TD5 auto surging when you floor it from low revs. Have replaced fuel filter and used injector cleaners but no better. Drive steady it's fine up till 2500RPM then flat with no torque beyond. Any ideas welcome.
The engine ecu cuts fuelling when it see's more than about 230Kpa,so the power drops,and so does the boost.Then it restores fuel till it overboosts etc,etc.
Tyrone Disco
New Member
To answer both questions above. Omagh N.Ireland, and the small pipes are fine, I've had them all off and clean rge aire intake pipe and the 90degree block on tiop of the pipe from the engine breather.
How do you check if it's the wastegate sticking or the modulator solenoid ?
How do you check if it's the wastegate sticking or the modulator solenoid ?
