1995 Toyota Corolla vibration

Tiny
VEGJER
  • MEMBER
  • 1995 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 131,000 MILES
When car is cold the hole car vibratesto much, my friend has the same car his is smooth, also when I put the car in reverse and hit the gas it also vibrates a lot, another thing is giving me about 15 miles per gallon, please help me understand the problem thanks
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Tuesday, December 18th, 2007 AT 2:31 PM

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Tiny
MHPAUTOS
  • EXPERT
Hi there,

With the vibration and the poor economy I am wondering if the engine is only running on 3 cylinders. Is it idling smoothly or rough and rocking about? Is it worse when put into gear? Is your car EFI or Carby? If carby it will have a large round black air filter housing on top of the engine. If carby model, these had a nasty habit of sucking in the inlet manifold gasket causing a bad miss fire, Get your mechanic to check for engine vacuum leaks first.

Mark (mhpautos)
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Tuesday, December 18th, 2007 AT 3:33 PM
Tiny
VEGJER
  • MEMBER
The car is efi it idles a little ruf not to bad when I put it into gear is not to bad and like I said when on reverse and step on the gas the vibration is strong, how do I check if is running on 3 or4 cylinders
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Wednesday, December 19th, 2007 AT 6:53 AM
Tiny
MHPAUTOS
  • EXPERT
Hi there,

You really need to have some electronic testing equipment and a understanding of whats going on in the motor, you can't just start pulling leads to see if A cylinder is firing, you are looking at 40-60,000 Volts now that can hurt. I would start by checking for any vacuum leaks around the engine inlet manifold, it might be a simple thing like that, otherwise you best get a mechanic to pass an eye over it and report back their findings.

Mark (mhpautos)
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Wednesday, December 19th, 2007 AT 9:33 AM

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