Question about 1997 Land Rover Discovery

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Running rough idle runs ok, but when I step on the gas, the engine acts like it's running on two cylinders. after about 1/2 hour it seems to start running ok.The engine light is on always.Was at Landrover Amherst for 51/2 mos. and couldn't figure it out.At wits end!!!!!!!!!

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  • captainesqui Nov 14, 2008

    My 97 land rover discovery will sputter and backfire when cold until it warms up. It doesn't do it all the time but has gotten alot worse. Will not pass 2,000 PRM until the temperature get's up to normal operating.



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What engine is this diesel /petrol

Posted on Oct 23, 2008

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Ford truck


im sure you also have a check engine light flashing.its a misfire in one or mor cylinders,the cause is very common the coil on top of spark plug goes bad. but you have to find out which coil.if its running rough at idle strat with #1 cyl and pull injector connector,if there is a change in idle speed then this is the or one of the bad cylinders.if idle drops then coil is good.then just reolace bad coils.

Jul 18, 2013 | Ford F-250 Cars & Trucks

1 Answer

My check engine light is flashing, the car runs rough until I get up to about 30mph and it is running through gas like crazy


Sounds like you have cylinder misfire. Any of the large auto parts stores can run an OBDII check and tell you which cylinder is misfiring (not firing). The engine is running with one cylinder out causing the rough idle. The faster the car goes the less perceptible the misfire is. That is why at 30mph the car seems to run smooth.

Jan 07, 2011 | 1997 Buick LeSabre

1 Answer

Mis fires


The engine in your car is designed to run smoothly with maximum power output and produce as minimal emissions as possible. When your car's engine is not performing properly it can cause, low gas mileage, low power output, increased emissions and possible internal engine damage if left untreated. This troubleshooting guide is designed to isolate the malfunctioning cylinder and troubleshoot to repair the problem. Before we start we need to know one of two things; is the engine running poorly at idle only and seems to be ok under power? Or does the engine run fine and it's just the engine idle condition that is the problem. If your engine is idling rough please visit, engine misfires at idle If your engine cranks over but won't start visit engine wont start. If your engine won't crank over visit engine wont crank over. If your engine is running rough all of the time or intermittently you are in the right place. Below we have created a guide to aid diagnoses and repair procedure for most common rough engine running problems.

  • Step 1: Anytime you have a problem with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, air bag) inspect all fuses in the under hood power distribution center and under dash fuse panels using a test light. If all fuses test ok continue to the next step.
  • Step 2: To check for problems with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system) and the fuses test ok a trouble code scan is needed to identify any system trouble. Use a simple scanner tool to retrieve trouble codes and check if they relate to the specific problem, like an ignition coil failure code. If a trouble code is present but does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the engine is running properly. The reason we repair non-related codes after the engine is running properly is because sometime false codes can be triggered by a rough running engine. Once the engine is running properly the code present might cycle and turn itself off. You might say "if the engine isn't running right shouldn't it have a check engine light and a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the intake or exhaust valve operation fails the computer cannot detect the failure because the problem is not sensor related, so the engine doesn't run smooth and the computer thinks everything is ok with no codes. If the trouble code retrieved relates to a cylinder misfire like an injector driver or ignition coil failure first repair these problems then re-test system. If no trouble codes are present proceed to the next step.

Nov 24, 2010 | 2005 Chevrolet Colorado

2 Answers

Engine will star and idle but will not increase in power when gas peddle is pressed


The engine in your car is designed to run smoothly with maximum power output and produce as minimal emissions as possible. When your car's engine is not performing properly it can cause, low gas mileage, low power output, increased emissions and possible internal engine damage if left untreated. This troubleshooting guide is designed to isolate the malfunctioning cylinder and troubleshoot to repair the problem. Before we start we need to know one of two things; is the engine running poorly at idle only and seems to be ok under power? Or does the engine run fine and it's just the engine idle condition that is the problem. If your engine is idling rough please visit, engine misfires at idle If your engine cranks over but won't start visit engine wont start. If your engine won't crank over visit engine wont crank over. If your engine is running rough all of the time or intermittently you are in the right place. Below we have created a guide to aid diagnoses and repair procedure for most common rough engine running problems.
Car Repair Guide - READ COMPLETELY BEFORE BEGINNING
  • Step 1: Anytime you have a problem with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, air bag) inspect all fuses in the under hood power distribution center and under dash fuse panels using a test light. If all fuses test ok continue to the next step.
  • Step 2: To check for problems with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system) and the fuses test ok a trouble code scan is needed to identify any system trouble. Use a simple scanner tool to retrieve trouble codes and check if they relate to the specific problem, like an ignition coil failure code. If a trouble code is present but does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the engine is running properly. The reason we repair non-related codes after the engine is running properly is because sometime false codes can be triggered by a rough running engine. Once the engine is running properly the code present might cycle and turn itself off. You might say "if the engine isn't running right shouldn't it have a check engine light and a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the intake or exhaust valve operation fails the computer cannot detect the failure because the problem is not sensor related, so the engine doesn't run smooth and the computer thinks everything is ok with no codes. If the trouble code retrieved relates to a cylinder misfire like an injector driver or ignition coil failure first repair these problems then re-test system. If no trouble codes are present proceed to the next step.
  • Step 3: The spark plugs in your engine are used to ignite the compressed fuel air mixture. If the condition of the spark plugs are fouled by excessive fuel or carbon the engine will not start, backfire or run rough. Remove all spark plugs to inspect the condition of the plug. Please use this spark plug condition reference guide to see how the spark plugs are operating.
  • Step 4: Check for broken or dilapidated vacuum hoses on and around the engine, your car's engine is designed to run on a system that can hold vacuum. Vacuum hoses are typically connected to the engine intake manifold and will supply engine vacuum to various accessories like power brakes. Some cars are designed with a larger vacuum transfer hose like Ford that connects the intake manifold to the IAC (idle air control) motor. A broken or dilapidated vacuum line or air intake boot can cause the engine to lose vacuum which will allow the engine to run rough and die. Inspect all engine and accessory vacuum lines to look for missing, torn or dilapidated lines and replace as needed. Also have a helper rest their foot on the gas pedal just enough to keep the engine running. Check the engine when it is running to listen for any whistling noise coming from the engine that is not usually present. Follow the noise and inspect vacuum lines in that area. Also, when the engine is running it will pull inward a broken or weak piece of the hose to create a larger vacuum leak. Check the integrity of all vacuum hoses at each end of the hose. Typically this is where a vacuum hose fails. If all vacuum hoses check "ok" proceed to the next step.
Also check here: http://www.2carpros.com/articles/engine-misfires-or-runs-rough

Nov 23, 2010 | 2001 Mercury Sable

1 Answer

Engine runs about 15 minutes then dies. acts like it is out of gas. will restart after sitting several hours.


Well iv had this problem a few times in the past so will let you try some of them ,
1/ Fuel pump in fuel tank overheating ORfuel filter not letting fuel passing ,ANSWER remove fuel pipe to engine and feed into a bottle turn on key and see how much fuel comes out without stopping, if ok go to fuel tank and check the breather pipe (make sure its clear).
2/ If engine runs well when you first start without missing and idles well,but then dies at 15minutes
when you try to start again dose it seem to turn over faster or slower?
3/When engine running check the rear tail pipe on exhaust check for smoke and put you hand over the pipe hard to stop fumes (dose engine run rough and stop?),as the muffler or converter can be blocked more so when hot.{use a glove on your hand}.
4/When the engine stops take out No1 plug lead and fit a spare plug in it and lay on top of engine and spin engine over ,does it spark?? as it could be the coil overheating which would also do it if no spark.
5/ Chech coolant sensorplug for bad fitting Also check Crank Sencer and coil wire to distributor.
Let me know the results Ron

Nov 19, 2010 | 2003 Kia Sedona

1 Answer

My 96 olds does not like to start when it gets hot. seems to start ok when it cools down. Any ideas? It doesnt start real easy when its cold. have to rev a let idle a little before moving. idles pretty...


Hello, I have 1996 Ciera with rebuilt engine pretty new, also fuel filter and fuel pump replaced but I have a problem, the car starts and runs well cold but once car has been running for a few hours, either stopping or coming to a stop it starts to idle roughly and has come to a stop at different occasions. Check engine light does come on and off occasionally. Can you help?

Nov 05, 2010 | 1996 Oldsmobile Cutlass Ciera

1 Answer

Rough idel when cold start


if u have a damaged plug it can be running on 1 less cylinder ,it will idle very rough,change it!

Mar 26, 2009 | 1993 GMC Safari

1 Answer

Fuel system


Check the fuel system, chenge fuel filter. clean the fuel tank.

Oct 16, 2008 | 1994 Toyota T100

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