Power question- Is this normal?
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Elder User
Joined: Mar 2002
Posts: 549
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From: Huntsville, Alabama
Power question- Is this normal?
I have more power at 1/8 throttle than 1/2 or more. This happens while traveling empty @ 55mph up a fairly steep grade. I feel the boost come in and as long as I stay 1/8 throttle it pulls well. If I ease into the throttle I feel the boost leave and the truck falls on its face. The transmission will hold O/D until I reach near full throttle then it will down shift.
I have 3:73's and the RPM is ~1700. Is this normal?
The truck is 100% stock and sorry no gauges at this time.
I have 3:73's and the RPM is ~1700. Is this normal?
The truck is 100% stock and sorry no gauges at this time.
Postmaster
Joined: Jan 2009
Posts: 2,667
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From: Glen Rose,Texas
This could be several things.Did this start all of the sudden?No CEL I assume?Have you checked all of the boots to see if one has come off or torn?What about black soot around the connectors of the downpipes?
How does it react to WOT?
How does it react to WOT?
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Elder User
Joined: Mar 2002
Posts: 549
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From: Huntsville, Alabama
Just bought the truck so i can't say if it is sudden.
Boots look fine, no CEL.
It drives fine at full throttle I just feel the boost come off like the waste gate just dumped the boost. I will get a gauge installed soon to see what happens to the boost levels.
Boots look fine, no CEL.
It drives fine at full throttle I just feel the boost come off like the waste gate just dumped the boost. I will get a gauge installed soon to see what happens to the boost levels.
Postmaster
Joined: Jan 2009
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From: Glen Rose,Texas
If you are on it hard and then get out of it you will hear the turbo push the unneeded air back through the filter.But you are talking about power loss.Not exactly sure and do not want to speculate.Do some more checking and get back to us.
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Elder User
Joined: Mar 2002
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From: Huntsville, Alabama
Pretty neat tool. Where is the best place to install it? Is there a single location or do you have to move it around to multiple locations?
Cargo Master
Joined: Jun 2003
Posts: 3,292
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From: Ardenvoir, Washington
Remove the air filter and attach the adapter to the 4" rubber intake hose that goes to the turbo..apply a max of 20 psi from a compressor and then listen for a leak..
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Elder User
Joined: Mar 2002
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From: Huntsville, Alabama
This my sound dumb but if a valve is open in the cylinder (which there should be) then air will leak into the engine.
I assume you use a regulator to maintain 20psi and check all joints?
I assume you use a regulator to maintain 20psi and check all joints?
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Cargo Master
Joined: Jun 2003
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From: Ardenvoir, Washington
I hear what you are saying but the air would enter the cylinder and stop (i think).. The adapter method does work.. a lot guys here on the forum have similar adapters.. And yes, you need a regulator to maintain the 20 psi.. (you don't want to apply too much pressure to the system.. ) If you need any help building the adapter, just email me..
Elder User
Joined: Oct 2007
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From: NJ
I hear what you are saying but the air would enter the cylinder and stop (i think).. The adapter method does work.. a lot guys here on the forum have similar adapters.. And yes, you need a regulator to maintain the 20 psi.. (you don't want to apply too much pressure to the system.. ) If you need any help building the adapter, just email me..
Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
It's either an intake valve or an exhaust valve that is open, never both.
There is not enough clearance between the piston crown and the cylinder head to allow any overlap at all.
It's easy to over pressure the intake if you're not careful with that air hose.
.
Now as far as the original poster talking about the power dropping off, that is caused by either a fuel system that cannot keep up with demand or the HPOP system cannot keep up with demand.
Start by checking pressures while under load.
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Elder User
Joined: Mar 2002
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From: Huntsville, Alabama
OK, I have a few things to look for. Thanks.
My wife is not going to be happy if I have to replace the HPOP since I bought the truck to replace a Dodge that was always breaking down!
My wife is not going to be happy if I have to replace the HPOP since I bought the truck to replace a Dodge that was always breaking down!
Cargo Master
Joined: Jun 2003
Posts: 3,292
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From: Ardenvoir, Washington
Thinking back before putting a programmer on the engine to boost the torque/hp, my engine would kinda act the same.. run out of power on a hill.. But, after installing my DiabloSport programmer, the problem has never returned.. I run a mild tune for towing.