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HomeOff Topics › Have I blown up the motor in my car???
04-28-2010 01:01 AM  8 years agoPost 1
Spitfire1

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Perth Australia

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Im realy stressing bad.

Last night on the way home from my flying feild I went to overtake a slow moveing truck, I had the stereo up loud and when I put my foot down(too hard) it dropped back a gear or maybe two and the revs went through the roof before I had chance to realize.

Now it idles realy low and rough when its in drive and will stall eventually, it idles OK in park but a bit rough.

When Im driveing along it seems to be OK but just has a different tone out of the exhaust, is it possible that Ive blown up the engine? I dont know anything about cars, i would have thought if the engine was blown it would not drive very well at all.

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04-28-2010 01:07 AM  8 years agoPost 2
HugeOne

rrKey Veteran

Quebec, Canada

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Maybe the timing belt slipped a notch.

Raptor e620 w/V-bar, Tango 45-06, Phoenix 85HV, TrueRC 12S1P 4000mAh

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04-28-2010 01:11 AM  8 years agoPost 3
himaxkeith

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Atlantic City NJ. USA

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You may have bent a valve from the overspeed. Normally the pistons and bearings can take it but the valves could float and possibly strike the piston causing one to bend and not seat correctly afterwards. You can check with a compression tester. Or the timming belt slipped and just thru the timming off. But if it slipped too much you can have the same result.

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04-28-2010 01:32 AM  8 years agoPost 4
Flying Brian

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St. Clairsville, Ohio

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Broke valve spring????

anyone..

There are all kinds of forums for specific models out there that can help.

"I just don't Listen" "

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04-28-2010 01:34 AM  8 years agoPost 5
rcmike

rrVeteran

Dickson, TN

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Not sure about the overreving but have you checked to see if you have a vacuum leak? Those will cause all kinds of idling problems sometimes.

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04-28-2010 01:38 AM  8 years agoPost 6
thtoyman

rrKey Veteran

Gone ,Flying.

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a bad EGR valve will do the same thing

more info. Kind and year? Miles on it?

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04-28-2010 01:44 AM  8 years agoPost 7
rcmike

rrVeteran

Dickson, TN

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Yeah, it is hard to diagnose stuff like that over the internet. There are several things it could be. If it is a newer car does the check engine light come on? Maybe a check of error codes would turn up something.

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04-28-2010 01:49 AM  8 years agoPost 8
ZXXflyer

rrKey Veteran

stone mountain, georgia, US

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Pull the spark plugs first and compare them....

Then run a compression, or leak-down test... this will determine if you bent a valve, blew a piston ring, blew the head gasket, cracked the block, etc.

A change in exhaust tone is never a good sign... sorry

Believer in Weston motors!

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04-28-2010 02:03 AM  8 years agoPost 9
Spitfire1

rrElite Veteran

Perth Australia

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Will take it it to mechanic today.

I never drive this thing hard, its just I had my music on too loud, and went to overtake and it dropped back a cog or two.

Feel so stupid that listening to music may cost me my car, usually if I need to acclerate I use the manual shifter to drop back one gear, I think because I was only going so slow and in auto mode its gone from 3rd to 1st.

Its not a new car about 98, Mitsubishi FTO GTX, V6 MIVEC (3.5 litre I think) It was my late dads car, he left it to me. Really bad stuff.

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04-28-2010 03:11 AM  8 years agoPost 10
EvoFlight50

rrApprentice

Southbury, CT

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If it's an automatic transmission and you had it in drive, you didn't do anything wrong. What would having your music lower have changed? It doesn't matter what speed you're going, you should be able to hit the gas as hard as you want.

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04-28-2010 03:55 AM  8 years agoPost 11
Spitfire1

rrElite Veteran

Perth Australia

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I dont know how high it reved as I had my music playing.

Just hope it isent anything major Ive just finished 4 years of study and still looking for fulltime work, my entire life will change without a car, wont even be able to fly anymore.

It may be nothing series and just need a service and tune, maybe due to always being driven slowly and all of a sudden being reved up just put it out of whack, Im just freaking out.

Its suppost to be a sports car you would think one tiny little acceleration would not blow it up.

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04-28-2010 05:14 AM  8 years agoPost 12
twistedrcpilot

rrNovice

Houston, Tx - USA

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I have a chrysler car with a mitsu. engine in it. I too have over reved it and ended up sucking the filter down to the point where it folded into it's self. I had a lower tone, wouldn't idle, but no real performance issues. If it's a 98, it should have a rev limiter. Mitsu engines are pretty heavy duty and can take a lot of abuse.

I'd bet on the air filter

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04-28-2010 11:50 AM  8 years agoPost 13
JeffKollin

rrKey Veteran

Jenison, MI

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Should have bought a Toyota, at least you would't have had to step on the gas. It would have already been there!!
What would having your music lower have changed?
His music was loud because he was tired of listening to the knock before she blew!

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04-28-2010 01:11 PM  8 years agoPost 14
TachyonDriver

rrKey Veteran

Chipping, Lancs, UK

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I second what evoflight said - with an auto trans in DRIVE, the box will not let the engine over rev....unless there's a fault or if the box is locked down in 1 or 2 (thus preventing changing up). Also - there would probably be a rev limiter, but the amount of revs available may surprise you

Tach.

Little Spinning Bundle of Joy® DON'T DISS THE DINO!!

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04-28-2010 02:35 PM  8 years agoPost 15
BeltFedBrowning

rrKey Veteran

Kansas City

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We had a lot of trouble with the timing belts in those cars. I worked at the dealership as a mechanic when they were new. One head would be a tooth off and the other would be OK. Just something to keep in mind.

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