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My 1998 range rover 4.6 hse has new plugs plug wires fuel filter and is still idling roughly help please Is it the pcv valve?

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Sell that money pit. You'll be glad you did!

Posted on Nov 18, 2014

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Is the check engine light on?

Posted on Nov 18, 2014

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Posted on Jan 02, 2017

ZX2Fast
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SOURCE: idles rough in drive,runs good

All automatic ZX2's have a rough idle in gear. Ford even put out a TSB and tried to fix it with no success. The engine is internally balanced and does not have a harmonic dampener. This means you get all of the engine vibration transferred to the frame. I own three ZX2's, my sister has one, my friend has two, they all have rough idle in drive.

The noise you get from the oil filler is normal to an extent. It is an overhead cam engine so you will hear noise from the oil filler. The oil you see on the spark plugs is likely from the valve cover gasket. That is the only place the oil can come from and get onto the top of the spark plugs. It can't travel through the spark plug threads and get on top from the combustion chamber.

It is good you replaced the PCV valve (I know it is hard to reach) but did you replace the breather? There is a round black box with a hose coming from the intake that goes onto the top of the valve cover. This is the air inlet for the PCV and if it gets clogged it will allow pressure to build up in the crank case.

Posted on Mar 11, 2011

redds55
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SOURCE: OK i have a ford escape 2001...v6 4wd. i have

check for loose wire on the injector or clogged injector.

Posted on Apr 16, 2011

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SOURCE: I have a 1995 astro van 4.3 v6 won`t idle tried

Have you read any of the codes

Posted on Apr 28, 2011

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1 Answer

What is causing 1998 4.6L expedition to hesitate on hills, rough idle


Are you sure the spark plug wires are on the correct spark plug? Recheck the firing order and spark plug wires. Additionally check timing on distrubutor

Jun 05, 2014 | 1998 Ford Expedition

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Rough idle 95 astro van, I did a full tune up , plugs,wires,cap, rotor,air filter,and fuel filter and cleaned egr vavle.


I actually had to replace my EGR valve and the gasket. I clean the valve well and reused both. I don't think the gasket sealed well enough though. So I went ahead and got a new valve, gasket and changed them. It runs a lot smoother now.

Dec 14, 2012 | 1995 Chevrolet Astro

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VERY ROUGH IDLE NO EXCELERATION


Try a few if these ideas...

Priority Action Part Type Cause
1 Inspect Spark Plug Fouled, Damaged, or Broken Spark Plug(s).
2 Inspect Hose (PCV) Clogged or Collapsed PCV Hoses.
3 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
4 Inspect Distributor Worn, Damaged or Faulty Distributor.
5 Inspect Catalytic Converter Clogged or Faulty Catalytic Converter.
6 Inspect Fuel Pump Low Fuel Pressure.
7 Inspect TimingSet Slipped TimingChain or Worn TimingGear(s).
8 Inspect Knock Sensor Improperly Connected or Faulty Knock Sensor.
9 Inspect M.A.P. (Manifold Absolute Pressure) Sensor Faulty M.A.P. Sensor.
10 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor.
11 Inspect Mass Air Flow (MAF) Sensor Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
12 Inspect Air Cleaner Temperature Sensor Damaged or Faulty Air Cleaner Tempature Sensor.
13 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
14 Inspect Piston Ring Set Worn or Broken Piston Rings.
15 Inspect Timing Specification Incorrect Ignition Timing.
16 Inspect Fuel System Pressure Incorrect Fuel Pressure Being Delivered to Carburetor or Fuel Injection System.
17 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
18 Inspect PCV Valve Plugged or Damaged PCV Valve.
19 Inspect Valve Burned, Worn, or Sticking Exhaust Valves.
20 check idle stop solenoid - if faulty, could cause rough idling
21 inspect distributor cap/rotor - if burnt, could cause loss of acceleration

Apr 18, 2011 | Chevrolet Cavalier Cars & Trucks

5 Answers

Range Rover 4.6 HSE. 97' 1. What does HSE


The HSE designation refers to a Sport Edition 'Rover, not a higher-priced premium edition.
Changing fuel grades can harm an engine that doesn't have computer controlled valve timing.
Symptoms include a pronounced, fast "knock" (usually when you go from 93 to 87 octane) and using a fuel with a higher octane rating than the vehicle requires (example: 93 versus 87) sends unburned fuel into the emissions system and catalytic converter. This puts stress on the emissions system. For some vehicles, a rotten egg smell or a pop when the fuel burns off in the catalytic converter coming from the tailpipe signals use of higher than needed octane gas.
More info on your problems here, as well as useful links:

http://www.rangerovers.net/newrremedies.htm

HOPE THIS HELPS! Don't forget to rate!

Jan 09, 2010 | 1998 Land Rover Range Rover

1 Answer

Shakes while idling and sometimes stalls.


check for minor vacuum leak and map sensor,pcv,egr valve

Oct 13, 2009 | 2001 Chevrolet Blazer

1 Answer

Runs but dont want to idle smooth tech 4 motor sometimes it smooths out then rough again thanks


1 Inspect M.A.P. Sensor Faulty M.A.P. Sensor. 2 Inspect EGR Valve Improperly Functioning or Faulty EGR Valve. 3 Inspect Fuel Injector Dirty or Worn Fuel Injectors. 4 Inspect Idle Air Control Valve Damaged, Loose, or Faulty Idle Air Control Valve. 5 Inspect Idle Speed Actuator Damaged, Loose, or Faulty Idle Speed Actuator. 6 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor. 7 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 8 Inspect PCV Valve Plugged or Damaged PCV Valve. 9 Inspect Carburetor Worn, Faulty or Damaged Carburetor. 10 Inspect Valve Burned, Worn, or Sticking Exhaust Valves. 12 Inspect TimingSet Slipped TimingChain or Worn TimingGear(s). 13 Inspect Fuel Pump Faulty Fuel Pump. 14 Inspect Camshaft Camshaft Lobes Worn. 16 Inspect Point Set Burned, Worn or Incorrectly Set Ignition Points.

Jul 01, 2009 | 1988 Chevrolet S-10

4 Answers

How to replace a PCV valve on my 1997 dodge neon? I travel over 60 miles a day and when at stop lights i have a light rough idle. Just replaced the plugs and wires 15k miles ago and the air filter 500...


Once you have the new PCV valve locate the old one on your engine. It will sit on the middle of one of your valve covers (most likely passenger side) and will have a line that connects to the top of the valve. Simply pull the old one out and put the new one in snapping that line on the new one. Should only take about a minute to do. Hope this helps, let me know if it does.

May 05, 2009 | 1998 Dodge Neon

2 Answers

2002 chevy trailblazer has rough idle


it could be an o2 sensor. it could also just need a tune up

Mar 15, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

2006 HSE RR....engine pulsates slightly when light acceleration


1. Fuel Pump pressure too low
2. Dirty air or fuel filter
3. Plug wires running parallel for more than 6" )cross em over each other or you get crossfire)
4. Crack in Intake manifold or split end on one of your vacuum lines or vacuum cap plugs

Check 'em out and let me know!

Jan 27, 2009 | 2006 Land Rover Range Rover

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