Car shut off cruising on the highway

[Robronnie5]

Last week my Marauder shut off half way thru a 2 hr and 45 min drive..there was no warning no lights come on nothing to alert me something was wrong just shut off...coasted to the side of the road stopped attempted to crank it it turned over but would not start several times then the starter started clicking as if the battery were dead. Ended up towing it back home then switching cars as i was headed out of town with my wife for her birthday. Havent had time to check the car yet but yesterday i did attempt to crank it and the starter clicked like the batter was dead...btw the starter did not turn slow like a battery thats dead either was fast but only clicking and the dash lights flicker when i attempt to crank it...the car shut off on me on the 14th last tuesday...any help would be greatly appreciated...plan to start troubleshoot this week. Btw it is trilogy supercharged also not sure if that helps i hope it did not cease up but ive heard stories about superchargers ceasing up.

[RubberCtyRauder]

When you turn the key to on, but not try start, does the fuel pump prime? I had a similar situation..I have a trilogy..check the number 5 fuse in the fuse box behind battery, pull it and check if blown (mine was) if cant tell, then swap it with another 20 amp of same, then try. if not then read this thread about trouble shooting to the next step etc.

http://mercurymarauder.net/forums/showthread.php?t=56597

MIne is working, never found out a root cause yet..I changed fuel filter, and have a modified fpdm here. My pump is only 2.5 years old with 2500 miles on it.

[Robronnie5]

i do remember hearing the fuel pump prime but I will check the fuse still and use the thread provided this week when i get off. Thanks in advance also hope this fixes the problem

[DWSTANG67]

When mine shut off on the highway it was the fuel pump at 105k miles but i was able to crank after, just did not start

[Robronnie5]

Forgot to add that a 340 pump was installed not too long ago less than a year ...along with a boost a pump

[justbob]

Forgot to add that a 340 pump was installed not too long ago less than a year ...along with a boost a pump



These have had quite a history running hard and heating up the FPDM to the point it shuts down till cooled. If you charge the battery up, something tells me it may just start and run fine. Not sure on the clicking without hearing it.

When it stalled did it just flat out die or did it shutter a bit like it was running out of gas?


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[Robronnie5]

Was running about 75 can't say I recall any shutter but its possible there was a very quick shutter to direct my attention to the cluster where I saw the rpm gauge at zero and all.other gauges down

[fastblackmerc]

Sounds like an alternator or battery problem.

Since this is a Trilogy install check the splice between the battery and alternator. I've seen a few with bad splices.

[1 Bad Merc]

Sounds like a blown fuse for the fuel pump -that happened to me before on a trip -put a 20amp in-I have had no problems since.

[Zack]

Stop using those aeromotive pumps

[RubberCtyRauder]

Stop using those aeromotive pumps

Zack, what pumps do you like? is it the AEM 320 or focus pump, gt40?

thanks!

[JBeezy]

I replaced my AEROMOTIVE 340 with an AEM 320 and it's been fine every since

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[Dragcity]

I run the AEM 320 LPH also.

[tbone]

Forgot to add that a 340 pump was installed not too long ago less than a year ...along with a boost a pump

Turn off the Boost-a-Pump. You don't need it with the 340. You are doing no favors to the pump.

[dmjarosz]

I replaced my AEROMOTIVE 340 with an AEM 320 and it's been fine every since

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Ditto. My Aeromotive went bad in less than a year. Sounded like it was trying to pump gravel. Switched to AEM and no problems since.

[JBeezy]

Shouldn't need the boost a pump with the AEM 320 either. Mine is installed but on 0. Thinking of simply removing it

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[Dragcity]

Really? I have mine on. Guess I should set to Zero then....

Look, another day I learned something! I'll g get a beer and celebrate.

[Robronnie5]

Still haven't been able to troubleshoot and.test the things you guys have mentioned it has been raining all week....I did attempt to.crank.it again and the speedo swang up.with the dash lights flicker as the starter.was clicking.very fast but.not turning over...I'm assuming the batter.is dead even though it's showing 11volt meter. And.that would mean alternator is bad or faulty battery connection like mentioned?

[RubberCtyRauder]

11 volts is not enough to start. real volt vauge or the factory one which is close but i would not trust it.

[Dragcity]

While its raining, put it on a trickle charger. Then when it clears up, at least you will have a fully charged battery.