Question about 2006 Nissan Pathfinder

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Rpm is too high after a fuel injection cleaning

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They probably cleaned throttle plate also....this will require idle air volume learn procedure.can only be done with dedicated bi directional scan tool.no back door way to do it:(

Posted on Mar 18, 2011

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We have a 2005 150txr that has sit most of its life. It runs great up to 300 to 3500 rpms but will not open up. We checked all 4 filters and they were clean.we replaced injection fuel pump no help?


Injectors themselves may be clogged and need cleaning, but I think the ignition module has a low rpm and high rpm section, which could be bad.

Oct 20, 2016 | Cars & Trucks

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The 2005 Isuzu 4HL1 smoother E engine has no power over hills what could be th problem


loosing compression
fuel delivery

if its the DiD ...internal carbon build up

Jun 30, 2016 | Isuzu Cars & Trucks

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WHY DOES MY ISUZU 4HL1 ENGINE HAVE A HARD START ALWAYS?


no car stated, huge NPR truck no less.
no year stated
so no free book information on that engine,.
big diesel. 4HL1, no dash letter?
compression at spec.?
glow plugs work.,
filters clean. water in fuel,
does test fuel (spray'd) help? ???
injection problems
lack of startup air.(filter)


The 4HL1 is a common rail direct injection OHC 16V high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 333 Nm, peak power is 140 PS (103 kW) at 3,000 rpm. Maximum torque is (34.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-N is a common rail direct injection OHC 16V high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 333 Nm, peak power is 131 PS (96 kW) at 3,000 rpm. Maximum Torque is (34.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-TC is a common rail direct injection OHC 16 V turbocharged and intercooled high-pressure fuel injection system engine of 4.777 L capacity with electronic control system. Peak torque is 425 Nm, peak power is 160 PS (118 kW) at 2,700 rpm. Maximum torque is (43.3 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-TCS is a common rail direct injection OHC 16 V turbocharged and intercooled high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 500 Nm, peak power is 179 PS (132 kW) at 2,700 rpm. Maximum torque is (51.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.

May 31, 2016 | Isuzu Cars & Trucks

1 Answer

Why cuts off when first started in morning unless helt at high rpm


Depending on what year the vehicle is and if it is equipped with a carb or fuel injection. If carb usually either bad choke or intake manifold leak. If it is fuel injection it could be a faulty control system malfunction. Good Luck

Nov 13, 2015 | Cars & Trucks

1 Answer

Toyota troubleshooting


have a fuel pressure test done and check the condition of the cat converter as it may be failing internally and blocking the exhaust system at high rpm's

Aug 24, 2014 | Cars & Trucks

1 Answer

Volvo v40 2000nx reg 1.8 NON gdi engine constant high rpm can having no thermostat cause constant high rpm or can a briken lambda sensor cause high rpm cleaned all throttle body cleaned idle valve checked...


Yes, having no thermostat can cause the car to run fast as it will still be set in it's "warm up" mode and will be injecting a richer mixture of fuel/air into the cylinders. There may be an additional cold start injector that just works while the engine is cold. You will probably use more fuel like this. It's not a great idea to run with no thermostat anyway because you get uneven hot and cold spots around the engine which is bad for it. Cheers

Feb 06, 2012 | 2000 Volvo V40

1 Answer

My engine rpm is too high


if fuel injected clean the throttle body.remove the intake hose and get one peice of cloth to clean the throttle by rubbing the inside surface.maybe you need to adjust the idling screw move it clockwise to close the air supply

Feb 17, 2011 | 1992 Mercury Topaz

2 Answers

Jaguar S Type, DPF light will not go out even though it has been replaced


it doesn't rave to ignite and clean the exhaust system even though i press the dpf button

Jan 02, 2011 | 2005 Jaguar S-Type

1 Answer

1987 ford tempo 2.3 Litre fuel injected will idle


this sometimes occurs with age due to egr and intake becoming carbon filled , inturn requireing more vacuum inturn raising rpm to keep up , check all vac lines for poss leaks this will cause prob , to check for leaks crank engine let idle use can of wd40 or starting fluid and spray lightly around suspected area , if rpms raise when u spray then u have found ur leak

Apr 28, 2010 | 1986 Ford Tempo

2 Answers

ENGINE VIBRATES WHEN AT STOP SIGHN


it depends, is the engine just vibrating or is it causing the whole car to shudder?

Jul 21, 2008 | 1997 Chevrolet Cavalier

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