Question about 1997 Mercury Cougar XR7

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Car starts but won't stay running when you step on the gas. 4.6 spark is orange a lot of fuel components have been changed including fuel pump regulator, computer module, and intake, any suggestions?

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  • Richard Scordino May 11, 2010

    Orange is a weak spark. should be more blue.

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Check the fuel pressure

Posted on Jul 29, 2009

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I have a 1991 Buick skylar the injectors are not pulsating but it start if I use starting fluid


It sounds like a weak fuel pump. When you stated that the car with start off ether. Did you mean that it would start and stall or that it would stay running. If it starts and then dies you will need to look at a lot more components. Including: (The fuel filter, fuel pump, fuel pump relay, fuel injectors, fuel pressure regulator, oil sending unit, Cam sensor, ignition module, or coil) Your engine needs fuel and spark to run, check to see if you have both. Please write back with any findings or questions. Be as specific as you can. Good luck.

Mar 06, 2014 | Cars & Trucks

1 Answer

Car was running fine,went to store,come out turn the key,plenty of crank,but just wont fire,whats my next step?


Determine if it is an ignition or gas failure. Does the fuel pump still work? Do you have gas up to the engine? Watch the injectors for spraying a cone pattern of fuel when car is cranking-that is, if the car is throttle body injected. If multi-port injected, you cant see the injector spray, so check for fuel at the engine fuel rail, or crack the fuel line at the engine to see if fuel is under pressure. The correct way is to check fuel pressure with a gauge, barring that, see if fuel is getting to the engine. If not, pump may have quit.
To check ignition, pull off a plug wire and check for spark when cranking. Be careful of shocks, hold wire with a glove or heavy rag, push the rubber boot back to expose the metal end of plug wire, and hold the wire 1/4 inch from a metal piece on the engine. Have a helper crank the car over and observe spark jumping from wire to ground-a good spark is a blue, snapping spark. Good ignition. A weak, inconsistent, or orange spark is a sign of ignition problem, possibly a bad coil, bad ignition module (the TFI module), or other ignition component.
If you have good spark (good ignition), and still unsure of fuel, spray some starting fluid or carburetor cleaner into the air intake and crank the car over. If it runs for a few seconds and dies, you know gas is the problem. The pump has quit or the fuel filter is clogged. You may even want to try this first, cause if it tries to run, you know ignition is good, and gas is not getting to the engine. Good luck.

Mar 17, 2013 | 1990 Ford Tempo

1 Answer

2000 gmc jimmy starts in AM fine won't start after sitting in sun all day


Can you jumper the fuel pump and make it start and continue to run ?
Have you checked to see if you are getting spark when it won't start ?
Could be a relay or coil, ignition module, or other component.

Aug 08, 2012 | 2000 GMC Jimmy

2 Answers

Why won't my 1997 Saturn SL start?


you have spark at the plugs ..thats something

spray stay you mug
into the throttle body see if the motor will cough

tank needs draining and have fresh fuel
fuel pump has a filter and fuel relay

crack the fuel line connection to the rail to see if there is fuel reaching the rail and correct pressure

if sitting 6 years.. not being run regularly
do a compression test
lifters may be stuck
rings may have lost tension



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Apr 07, 2017 | 1997 Saturn SL

1 Answer

91 Lumina won't stay running; see lots of same question for same car but no problem solvers....Please help.


On electronic fuel injection pumping an pumping an pumping the gas pedal does nothing without the engine running ! Pushing the gas pedal to the floor will cause the PCM - engine computer to go into clear flood mode .

You have some very interesting ideas here , but not really how it works or is !

The vehicle will go into closed loop fuel control when the engine coolant temp reaches a definded temp an the O2 sensor get hot.

She would run for a couple minutes and die which is open loop when running, closed loop is when the sensors kick and it would die. Pulled spark plugs, they were black meaning no spark. Can only be 2

Black spark plugs indecate a rich condition , over fueled , wet spark plugs indecate no spark .

Mar 07, 2017 | 1991 Chevrolet Lumina

2 Answers

Will start but it won't stay on once I step on the


not getting air or exhaust ....its being 'choked'

Nov 01, 2011 | 1989 Jeep Cherokee

1 Answer

When engine warms up and you are driving and you let up on gas pedal to come to a stop it quits. Try to start it won,t start squirt little gas in carb it will start but if you let up on gas pedal it quits...


Change the fuel filter.
You may have to also change the fuel pump (sounds like it is getting weak) , but the filter is the cheaper/first step in the process.

Oct 05, 2011 | 1993 Chevrolet S-10 Blazer

1 Answer

Replaced the electric fuel pump got it running but it wont stay running as soon as it starts it also dies what could be the problem.could it be a problem with the supercharger or a relay switch


Did you change the fuel filter? There is a lot of accumulated gunk in a fuel tank and when you put on a new fuel pump it has a habit of suxing up some of that gunk and fowling the fuel filter.

Troubleshooting is a step by step process and you have to take things one step at a time. You have to first make sure you are getting spark and fuel necessary for starting.

Jun 25, 2011 | 1993 Ford Thunderbird

1 Answer

Died going down the road, have gas and spark, but wont start now.


For an engine to run, you need three things to happen inside the engine, compression, fuel and ignition, without any one of these components the engine will not run.
  • Compression - Engine compression caused by crankshaft rotation and pistons moving up and down inside the engine block. If the timing belt or timing chain fails it will cause the camshaft to become out of correlation with the crankshaft or allow the camshaft to stop rotating. Either of these conditions will cause the engine to lose compression and sometimes cause internal engine damage.
  • Fuel Delivery System - The fuel system includes: fuel pump, fuel injectors, pressure regulator, fuel filter and pressure lines. This system is used to supply fuel under pressure to the fuel injection system, the lack of fuel pressure or volume will cause the fuel delivery system to fail and the engine to stall or not start.
  • Ignition Spark Delivery System - The ignition system components include: spark plugs, spark plug wires, distributor (if applicable), crankshaft angle sensor, camshaft angle sensor, ignition coil, ignition module, knock sensor and ECM (engine control module). The engine relies on the ignition spark to be delivered to the combustion camber at the correct time. If the ignition spark stops or is delivered at the wrong time the engine will not run or run poorly.
If Your Engine Cranks but Does Not Start Follow this Troubleshooting Guide
Most vehicles operate by the same principle; basic troubleshooting procedures apply to most cars.
  • 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 using a test light and check the under hood power distribution center and under dash fuse panels. 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, Air Bag ) 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 see if they relate to the specific problem, like a crank angle sensor failure code. If the trouble code present does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the car is running. The reason we repair non-related codes after the engine is running is because sometime false codes can be triggered by the engine not running. Once the engine is running again the code present might cycle and turn itself off. You might say "if the engine doesn't run shouldn't it have a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the fuel pump fails the computer cannot detect the failure, so the engine doesn't start and the computer thinks everything is ok with no codes. 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 their condition. Please use this spark plug condition reference guide to see how the spark plugs are operating.

Nov 24, 2010 | 1999 Dodge Ram

1 Answer

I have a 98 escort i changed the battery changed the spark plugs and it turn on but it wont stay on what can be the problem?


is the car getting gas .... lots of times the fuel filters get clogged up so it will take awhile to crank and when it starts it will not stay running.. there's only 3 components fuel, air, and spark. If its starting that means your getting spark and air is not usually a problem unless your muffler is clogged so most likely your not getting fuel so if the filter has not been changed in awhile that's what i would advise doing its easy and cheap prob 10 bucks. You can get everything from advanced auto if you have any other questions just get back to me id be more then happy to help you through the steps and if you can please rate me id appreciate it .

Thanks,
Steve

Dec 28, 2008 | 1998 Ford Escort

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