20 Most Recent 1997 Mercury Grand Marquis - Page 7 Questions & Answers

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The freon pressure will read close to air temp when the compressor is not running. On both high and low sides.You may have to check the circuit for power to the clutch. It could be a pressure switch, the ac clutch, or a relay.

get a new pickup mod for your distribor

If the engine is cranking over, it is not a problem in the starting circuit-forget the starter or relay-but possibly a problem in the ignition circuit. Since you can hear the pump turn on, first thing to check is the ignition-check for spark at one of the spark plug wire ends. You need to see a blue, snapping spark to know the ignition circuit is working. If you do have spark, check fuel pressure and check injector circuit.Have someone help you check for spark if you haven't done it before. Someone will have to help you anyway, by cranking the engine over when checking for spark.

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You can do what is called Reflashing a PCM (computer)That is done if you install a different one Then it is brought up to assembly line, as builtspecs, for your VIN # , plus any updates since.Unless your having a problem, you don't spendthe big money to just see if there is an updateIf you connect a scan tool & go to Mode $09, thecurrent installed data is listed & a dealer can look that up

Do a leak-down test of that cylinder. If a valve, the test will tell you so and which one, whether intake or exhaust.The knock is worrisome, hope it's not a piston rod.

Oil Life Reset

1. Press the SETUP button to display PRESS SELECT TO BEGIN SYSTEM CHECK.

1. Press the SELECT button to display OIL LIFE - PRESS RESET IF NEW OIL.

1. Press and hold the RESET button to display OIL LIFE START VALUE SET TO XXX% is displayed. The oil life is now set to 100%.

It can, so can many other things. It certainly can't be condemned simply on those symptoms.

Hi, the battery light indicates your alternator is not charging. If you have a voltmeter, check the voltage at the battery with the engine running. If the voltage is less than 14 or you don't have a voltmeter, remove the alternator and have it tested at your local parts chain. Please let me know if you have more questions, and thanks for using FixYa.

Depending on what you need, you may be able to register on one of the auto parts store websites to access a copy of their Haines book.

There are different cat converters on the market but I would investigate the possibility of the HO 2sensors not being compatible with the converters thereby giving the CPU an incorrect reading It is not a matter of faulty as so far as in efficient because they do not have the correct size medium inside to burn all the emissions fully

You have bypassed the underhood fuse boxes power supply from the battery. Use factor battery cables routed correctly DON'T "ROOT OBERG IT"

It is mounted in the rear, here is a picture of the part. Autozone can test your Ignition Modules be test yours

What they mean is the water coolant hoses connected to the inlet manifold these will need to be removed as part of the job l can`t fore see any major problems it`s pretty striaght foward..

The code is for the sensor for the EGR valve. The sensor is sending the computer a high voltage when it should be low.The sensor and valve would need to be tested.