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Misfire / bad shaking - Diagnosis help

 
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CurtisRW




Joined: 06 Jan 2017
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Location: Salisbury
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PostPosted: Mon Aug 14, 2017 7:13 pm    Post subject: Misfire / bad shaking - Diagnosis help Reply with quote Reply with quote including images

So my car started to shake/vibrate fairly badly when I slow down and come to a stop in traffic. It generally only happens after I've been driving for at least 15-30 mins but isn't 100% consistent.

It only occurs when I stop the car but once it starts it get progressively worse and the steering wheel will start the shake and the engine behind me will be shaking and you can feel it through the whole car. Then as I step on the gas and get the car moving again it subsides.

Posted this on an FB group when it first started happening and they all said it was engine mounts but that wasn't the case. A garage said it sounds like a misfire and on further inspection I found that the spark plug cables were damaged.

So I replaced the spark plugs, spark plug wires, distributor cap and ignition rotor. - but this hasn't stopped the problem.

So does anyone know what this could be? Does it sound like a misfire?

Thanks for any help! desperate to get this sorted now...
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markstevieandmads




Joined: 05 Aug 2013
Posts: 1699
Location: Swindon, Wilts
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1993 Toyota MR2 Mk2 Turbo Rev2

PostPosted: Mon Aug 14, 2017 7:45 pm    Post subject: Reply with quote Reply with quote including images

Check coil for cracks and while off make sure its earthing through the bracket properly
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mark35




Joined: 26 Nov 2011
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PostPosted: Tue Aug 15, 2017 8:58 am    Post subject: Misfire Reply with quote Reply with quote including images

Might be worth checking all the metal/ rubber pipes around the TVIS system
Check for loose and damaged cracked ones.
Could also be a faulty waxstat.
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mr2garageswindon




Joined: 15 Oct 2014
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1994 Toyota MR2 Mk2 NA Rev3

PostPosted: Tue Aug 15, 2017 11:45 am    Post subject: Reply with quote Reply with quote including images

Have you checked the fault codes?
I had similar symptoms in a corolla gt many years back.
Turned out to be faulty throttle position sensor.
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CurtisRW




Joined: 06 Jan 2017
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Location: Salisbury
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PostPosted: Thu Aug 17, 2017 7:28 pm    Post subject: Fault codes Reply with quote Reply with quote including images

mr2garageswindon wrote:
Have you checked the fault codes?
I had similar symptoms in a corolla gt many years back.
Turned out to be faulty throttle position sensor.


If there isn't any warning lights showing is it still worth checking for fault codes?
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Lauren
IMOC Committee



Joined: 13 Dec 2004
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Location: Greater Manchester
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PostPosted: Fri Aug 18, 2017 6:17 am    Post subject: Re: Fault codes Reply with quote Reply with quote including images

CurtisRW wrote:


If there isn't any warning lights showing is it still worth checking for fault codes?


It can be yes, given it's very easy to check for fault codes. All you need is a paperclip.
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CurtisRW




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PostPosted: Sat Aug 19, 2017 10:06 am    Post subject: Reply with quote Reply with quote including images

Checked for fault codes... Don't think there were any.

This means all good right? Code 1 I believe:
*I can't post links yet but this is a link to a video. just remove spaces.

ww w. youtube . com/watch?v=NEw5hz_q-LE&feature=youtu.be
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