1996 Toyota Celica grinding from a stop

Tiny
MSTOOCHN
  • MEMBER
  • 1996 TOYOTA CELICA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 9,000 MILES
On engine, 140,000 on transmission

At a stop lighting when I give it a reasonable amount of gas or a large amount of gas it makes a grinding sound when you begin to move, doesn't seem as though the trans is slipping and the fluid is sort of a darkish purple at the right level. If I keep the throttle light and roll off it does not do this.
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Saturday, May 15th, 2010 AT 5:56 AM

32 Replies

Tiny
MHPAUTOS
  • EXPERT
HI there,

Does it make any odd noises when you brake or roll to a stop?

Mark (mhpautos)
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Saturday, May 15th, 2010 AT 6:39 AM
Tiny
MSTOOCHN
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Yea just before u come to a complete stop is makes a definite click (single click) around the same time the trans would shift back into first

this may or may not be related: but there is also what woulds like a suspension crack from the front of the car when turning left, going over bumps, and sometimes even breaking

the cracking has always been there and never really caused an issue, this current issue on the other hand has gotten worse than before.

Update today: It seems multiple short trips make it more prone to happen. Could it be something to do with temperature change?
The sound itself also seems to happen between 1200-1500rpm
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Saturday, May 15th, 2010 AT 2:39 PM
Tiny
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HI there,

The click can be a loose brake pad in the caliper, you see this a lot, the grinding noise is a bit odd, have you had the brakes fully inspected as yet, the clunk or knock will be a work suspension bush making a noise with the weight transfer under breaking load, have the front end carefully inspected first also the brakes and let me know what you find.

Mark (mhpautos)
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Saturday, May 15th, 2010 AT 5:55 PM
Tiny
MSTOOCHN
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My brakes were inspected about a month ago. Recently I had the suspension noise checked and everything was tight, the clicking sound sounds alot like the sound you hear when the exhaust system is cooling down when you turn your car off.

I drove my car today on a long trip and no matter how hard I tries unless I gave it full gas from a stop I couldn't get it to make this grinding sound.

Best way to describe this sound is if you had flem in te back of your throat and u pushed your tongue near the top of ur mouth and breathed out thru ur mouth.
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Saturday, May 15th, 2010 AT 7:20 PM
Tiny
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Also when your not in gear (its an auto) sitting n park if u give it a bit of gas u hear a clunk when you take your foot off the gas
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Friday, May 21st, 2010 AT 4:40 PM
Tiny
MHPAUTOS
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Remove the drive shaft spline split pins and re tighten the nuts, check all engine mounts and haver the front sub frame bolts backed off and re tensioned.

Mark (mhpautos)
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Friday, May 21st, 2010 AT 6:29 PM
Tiny
MSTOOCHN
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This is to fix both issues?

Ive had an ameteur mehanic tell me the grinding is probably the torque converter
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Friday, May 21st, 2010 AT 6:43 PM
Tiny
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This for the click noise, as for the grinding noise, with out hearing it it is very hard to say, I will give it some thought,

mark (Mhpauto's)
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Saturday, May 22nd, 2010 AT 12:53 AM
Tiny
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Some more addition info because he brought up the torque converter thing

If I rev the engine in Neutral there is no sound.

I did a test to check my torque converter suggested to me, and this caused a similar sound.

I held the brake with in gear and hit the throttle quickly (On/Off, I was scared to cause any dmg)
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Saturday, May 22nd, 2010 AT 2:21 AM
Tiny
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Hi there,

What you did was not quite correct, the torque converter stall test is in gear brakes applied and hold revs for a few seconds, but this should be done by someone who understands what is going on,

mark (mhpautos)
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Saturday, May 22nd, 2010 AT 3:32 AM
Tiny
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Should it make that grinding sound though?
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Saturday, May 22nd, 2010 AT 4:32 AM
Tiny
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There should be no grinding noise at all.

Mark
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Saturday, May 22nd, 2010 AT 5:51 AM
Tiny
MSTOOCHN
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So if I hold the brake and give it a bit of gas and it does that, that is a good indication I have a torque converter problem?

I have also begun to notice another sound that has developed in the past week or so,

another knock/cracking sort of sound that can happen whenever it wants to it seems, although turning right seems to make it happen alot more often than turning left. Going over uneven pavement is can also make this sound. Or even just taping the brakes and letting off them or rev'ing the engine in park

Front and Rear Motor Mount were replaced when the engine was rebuilt so they have 9,000K on them as well
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Monday, May 24th, 2010 AT 2:33 AM
Tiny
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I am tending to think tat this is a converter problem, but with out actually hearing it I can't be 100% certain. As for the other problem, sounds like a suspension issue as the noise appears to coincide with weight transfer, have the suspension check for worn components.

Mark (mhpautos)
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Monday, May 24th, 2010 AT 3:00 AM
Tiny
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Is there a proper way to have the converter tested?
If its bad, what sort of debt could I be looking at
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Monday, May 24th, 2010 AT 3:01 AM
Tiny
MHPAUTOS
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The trans will have to be line tested and pressure tested by a qualified trans specialist, there may be other problems as well as the converter, the converter drives the oil pump this will all have to be inspected before any estimate can be considered, and if this noise has resulted in metal being transposed through the transmission, a full re co may be required, but this just can't be known until the trans is inspected first hand, even removing the pan and checking for metal in the filter and in the pan will be a good place to start.

Mark (mhpautos)
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Monday, May 24th, 2010 AT 3:37 AM
Tiny
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Awesome, so I was convinced to buy a car because it had a brand new beating heart, but actualy its a ticking time bomb.

Well when I check my trans oil last time, it was still full and although getting to be that purplish/brown color it was still good, not burnt and certainly no metalic flakes
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Monday, May 24th, 2010 AT 5:29 AM
Tiny
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Well when I check my trans oil last time, it was still full and although getting to be that purplish/brown color it was still good, not burnt and certainly no metallic flakes

That was then, this is now, I would be re checking if this was a few 1,000 miles ago.

Mark (mhpautos)
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Monday, May 24th, 2010 AT 5:43 AM
Tiny
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This would have been when I originally posted this issue, so less than a week ago when I really started to notice this issue. I do city driving but no more than 100 kilometers per week. Thankfully not alot of stop and go traffic
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Monday, May 24th, 2010 AT 5:44 AM
Tiny
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Well I think that you know what to do from here, let me know how you get on.

Mark (mhpautos)
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Monday, May 24th, 2010 AT 6:29 AM

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