Discovery 2 problem
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2nd Gear
Joined: Mar 2012
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Discovery 2 problem
I have a land rover discovery 2 td5, diesel, 2001. For some time have had the following issue: gasp when I accelerate quickly, loses strength on the climbs long and varies the speed when accelerating at 2500 rpm and over, and it is consuming too much fuel. Already changed the MAF, wastegate control valve, but the problem continues. Can anyone help me?
You have a intake leak somewhere, the "gasp" you hear is the unmetered air being sucked in the engine.
It looses power because you are loosing turbo boost through that leak.
It is using to much fuel because it is getting to much unmetered air and the ECU is trying to compensate for a lean mixture by adding more fuel.
Whenever there is a intake air leak in a turbo system it really jacks things up.
Start at the airbox and follow the intake tubing to the turbo, then from the turbo to the intercooler and then to the engine.
Look for cracks or loose clamps on intake tubing, if you dont find any then look at the intercooler, it may have a leak.
It looses power because you are loosing turbo boost through that leak.
It is using to much fuel because it is getting to much unmetered air and the ECU is trying to compensate for a lean mixture by adding more fuel.
Whenever there is a intake air leak in a turbo system it really jacks things up.
Start at the airbox and follow the intake tubing to the turbo, then from the turbo to the intercooler and then to the engine.
Look for cracks or loose clamps on intake tubing, if you dont find any then look at the intercooler, it may have a leak.
Not really, I've had similar problems on turbo cars/trucks/vans that I have owned/driven.
My wife's Volvo had a cracked intercooler intake tube, I did a temp fix with a large radiator hose until the new part came.
It would hesitate really bad if you floored it, it idled high and ran rich.
My Sprinter lost all power and would not go over 60mph and even slower on hills because the intercooler had a pin hole leak.
My Frieghtliner lost all power when the intercooler hose fell off of the engine, I did a road side repair with my bootlace.
Turbo engines get their power from the huge amount of cold air being forced into the engine, the higher the intake air PSI and the colder it is the more power you get.
Thats how TD's get so much toque from such a small displacement engine and the smaller the displacement (engine size, meaning liters) the less fuel it needs.
A car is a car, a truck is a truck a engine is a engine a trans is a trans...they all work basically the same way.
Same parts, different location same function.
My wife's Volvo had a cracked intercooler intake tube, I did a temp fix with a large radiator hose until the new part came.
It would hesitate really bad if you floored it, it idled high and ran rich.
My Sprinter lost all power and would not go over 60mph and even slower on hills because the intercooler had a pin hole leak.
My Frieghtliner lost all power when the intercooler hose fell off of the engine, I did a road side repair with my bootlace.
Turbo engines get their power from the huge amount of cold air being forced into the engine, the higher the intake air PSI and the colder it is the more power you get.
Thats how TD's get so much toque from such a small displacement engine and the smaller the displacement (engine size, meaning liters) the less fuel it needs.
A car is a car, a truck is a truck a engine is a engine a trans is a trans...they all work basically the same way.
Same parts, different location same function.
Recovery Vehicle
Joined: Jun 2009
Posts: 1,099
Likes: 8
you stud muffin....
Not really, I've had similar problems on turbo cars/trucks/vans that I have owned/driven.
My wife's Volvo had a cracked intercooler intake tube, I did a temp fix with a large radiator hose until the new part came.
It would hesitate really bad if you floored it, it idled high and ran rich.
My Sprinter lost all power and would not go over 60mph and even slower on hills because the intercooler had a pin hole leak.
My Frieghtliner lost all power when the intercooler hose fell off of the engine, I did a road side repair with my bootlace.
Turbo engines get their power from the huge amount of cold air being forced into the engine, the higher the intake air PSI and the colder it is the more power you get.
Thats how TD's get so much toque from such a small displacement engine and the smaller the displacement (engine size, meaning liters) the less fuel it needs.
A car is a car, a truck is a truck a engine is a engine a trans is a trans...they all work basically the same way.
Same parts, different location same function.
My wife's Volvo had a cracked intercooler intake tube, I did a temp fix with a large radiator hose until the new part came.
It would hesitate really bad if you floored it, it idled high and ran rich.
My Sprinter lost all power and would not go over 60mph and even slower on hills because the intercooler had a pin hole leak.
My Frieghtliner lost all power when the intercooler hose fell off of the engine, I did a road side repair with my bootlace.
Turbo engines get their power from the huge amount of cold air being forced into the engine, the higher the intake air PSI and the colder it is the more power you get.
Thats how TD's get so much toque from such a small displacement engine and the smaller the displacement (engine size, meaning liters) the less fuel it needs.
A car is a car, a truck is a truck a engine is a engine a trans is a trans...they all work basically the same way.
Same parts, different location same function.
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