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Thumping when starting, once when overtaking 

 

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 Post subject: Thumping when starting, once when overtaking
Posted: Tue Jan 27, 2009 1:34 pm 
Getting Side Ways
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Age: 42

Posts: 1343

Joined: 14th Dec 2007

Gallery: 1 images

Ride: EL fairmont offroader

Location: seaspray
VIC, Australia

When i start the EL, sometimes it is fine, sometimes it is a little thumpy, and yesterday there was a big thump. The car rocks around. I don't know if this is related, but once when i was overtaking it was so thumpy i almost aborted. I am trying to figure it out.

I am new to the round engine mounts. I put the car in gear and held the brakes and pressed the accelerator, but the engine didn't move much, it seemed normal.
I have spare starter motors, so could try this.
I actually visualise something internal, like a piston whacking somehow.
I haven't noticed any other problems with the engine. It has done 248,000km and is new to me. Seems to have a decent service history.

 

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wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake

Last edited by relaxed_diplomacy on Wed Jan 28, 2009 12:26 pm, edited 1 time in total.

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 Post subject: Re: Thumping when starting, once when overtaking
Posted: Wed Jan 28, 2009 12:24 pm 
Getting Side Ways
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Age: 42

Posts: 1343

Joined: 14th Dec 2007

Gallery: 1 images

Ride: EL fairmont offroader

Location: seaspray
VIC, Australia

bump

My only other idea is if the TFI module is playing up giving a way retarded spark (there is no pinging).

 

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wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake

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 Post subject: Re: Thumping when starting, once when overtaking
Posted: Thu Jan 29, 2009 10:55 pm 
Getting Side Ways
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Age: 42

Posts: 1343

Joined: 14th Dec 2007

Gallery: 1 images

Ride: EL fairmont offroader

Location: seaspray
VIC, Australia

I drove the car yesterday in the heat of the day and sometimes the gearbox was thumping. I figure it may be low in oil, and/or the filter needs replacing. The driveshaft seal is leaking a bit so that could be a cause of low oil. I have been planning to fix all this. Maybe fixing this will fix all the thumping, not that it thumps very often anyway.

 

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wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake

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 Post subject: Re: Thumping when starting, once when overtaking
Posted: Mon Feb 02, 2009 1:49 pm 
Getting Side Ways
Offline

Age: 42

Posts: 1343

Joined: 14th Dec 2007

Gallery: 1 images

Ride: EL fairmont offroader

Location: seaspray
VIC, Australia

I have done the tranny and seems good so far.

Also, i have found dust in the fuel and it was causing problems, and figure that may have played a role in the thumping.

 

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wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake

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