Question about 2004 Mercury Grand Marquis
CAR STARTED JUST FINE UNTIL NEW LCM WAS INSTALLED,PICKED CAR UP FROM DEALER AND NOW I HAVE TROUBLE STARTING IT.THE RED SECURITY LIGHT FLASHES RAPIDLY AND IF I KEEP TRYING TO START THE CAR THEN AFTER SEVERAL ATTEMPTS IT MIGHT START.I HAD NO PROBLEM WHAT SO EVER UNTIL NEW MODULE WAS INSTALLED.
Don't know anything about this but, could your ignition key be coded to your old LCM?
Posted on May 15, 2014
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Posted on Jan 02, 2017
is there spark dos it spin do you got test light.tack of cap is rotter
spin did it jump time dose it pop through carb or back fire wen trying to start
Posted on Jan 25, 2010
you can oder a cheap lcm from silverstatefordparts.com or sometimes u can just tap the lcm box and lights should turn back on.
Posted on Jul 10, 2010
For tick tick noise under dash board the fuse box under the dash needs to be inspected.May be any relay in that fuse box is flickering or getting short and making this noise.So first check the fuse box under the dash.------------
And for no start problem, it indicates towards Antitheft problem.--------------
VEHICLES EQUIPPED WITH PASSIVE ANTI-THEFT SYSTEM (PATS) MAY NOT START OR CRANK.-----------
This problem comes when your key is not detected by the ignition cylinder.There is a chip in the car key and reader in the ignition cylinder.When you insert the key in ignition switch, the reader in ignition cylinder reads the chip on the key and it detects that right key is inserted.ut if the wrong key is detected or no key is detected then it will not let the car to start.It seems like car is dead.------------
But this problem remains for 30 minutes.After 30 minutes you can again insert the key and see.If the key is not detected again then again you have to wait for next 30 minutes.------------
Actually the procedure is as follows.This PATS is a safety feature.This feature is there because no body can steal your car by inserting the wrong key.------If the ignition detects that wrong key is inserted or it cannot detect the key, then it goes into 30 minutes lock out system.Now till 30 minutes it will not let the car to start.Automatically after 30 minutes the ignition comes out of lock out.--------------
But as you said that suddenly car will not start , then suddenly it will start.If you notice this problem again n again then the problem relates to weak chip in the key or weak chip detector in the ignition cylinder.---------
This chip in key and signal detector in ignition can be tested and replaced by the dealer.The chip is available online, but in most of the cases it needs to be reprogrammed, then only new chip works.Now to get re-program you have to take the chip and car to dealer.---------
Also if you have another key then try with both keys to start.If the problem is with chip in the key then car should start with another key.But if problem is with chip detector in ignition cylinder then it will not start with any key.------------
In some cases disconnecting the negative terminal of the battery for 30 minutes then reconnecting the battery helped to solve this problem. Disconnecting the battery terminal and reconnecting the terminal after 30 minutes, resets the internal system of car.Sometimes all problems gets reset and problem resolves.So before you go for chip reprogramming and replacement to dealer, try this battery disconnecting and reconnecting reset procedure.-------------
This will help.Thanks.Helpmech.
Posted on Jul 10, 2011
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