I have a 2001 Saturn Sl1 with 100000 on it. Need Mechanical advice?

Question:
It started thunking it jolts the whole car forward. It does not do it all the time. My husband seems to think its a transmission problem but does not know much about cars. Any suggestions would be helpful

Answers:

Help with auto car starter......?

I just had the same problem with my Saturn. It was a motor mount.

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i'm looking for unique ideas/modifications?

is it mechanical or something in the trunk.....I know someone who

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my peugeot 206 missfires at 2000 rpm in every gear,why?

This is a classic sign of a weak or BROKEN motor mount, get it to a garage quick to avoid serious dammage to the car, good luck to you

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what is a reasonable amount of time to repair a damaged car?

If it is an automatic transmission then you probably need to get it flushed... if it is a manual then dont worry about the flush. the fluid isn't going to wear out.

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Why do I hear that Maaco paint jobs peel after a few years. Bad paint or bad prep?

You didn't say when it's jolting the whole car forward, if it's when you stop or when shifting into gears (reverse, drive, park, etc). If it's when you go into reverse, drive, etc, check the motor mount beneath the transmission on the driver's side. If it's when the car is shifting into different gears and it's shifting very hard (This sounds funny, but I've seen it) check your alternator. See if you can return it to the parts store if it doesn't fix the issue. I had a 95 Sl2 Automatic that had the hard dhifting problem until I replaced the alternator. Alternators create an AC current, then it's converted to DC. However, in some extreme cases, the AC current can bleed out past the rectifier and get into the car's electrical system. Now, here's the kicker: The speed sensor also generates an AC signal. The AC voltage getting past the rectifier can make the computer think the car's speed is WAY different form what it actually is, thus causing it to shift at the EXTREME wrong time.

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