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1993 Toyota MR2 Jumpy Tach needle

Tiny
SOYEEZY
  • MEMBER
  • 1993 TOYOTA MR2
  • 50,000 MILES
When reving or driving, at around 2k to 3k rpm tach needle jumps and car hesitates. At about 4k rpm its smooth. I have not checked anything yet besides spark plugs and they look OK. I will change them and see if it helps.
Tuesday, July 2nd, 2013 AT 11:25 AM

11 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Usually a jumpy tachometer is associated with the ignition coil. Have that tested.
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Wednesday, July 3rd, 2013 AT 6:22 AM
Tiny
SOYEEZY
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  • 7 POSTS
Ok I will test that today. Ill update you asap thanks!
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Wednesday, July 3rd, 2013 AT 11:46 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Any update on this?
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Sunday, July 14th, 2013 AT 6:19 PM
Tiny
SOYEEZY
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  • 7 POSTS
Hi I checked it with a multimeter and it read 0.5ohms. Not sure what its supposed to be at. What else do I need to check on it?
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Monday, July 15th, 2013 AT 5:36 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You need to check the primary and secondary resistance as per diagrams.
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Tuesday, July 16th, 2013 AT 9:39 AM
Tiny
SOYEEZY
  • MEMBER
  • 7 POSTS
Hey I changed out the ignition coil and still the same thing is happening. Im going to try the igniter now
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Friday, October 11th, 2013 AT 8:35 PM
Tiny
SOYEEZY
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  • 7 POSTS
Changed igniter and still same result. Any other ideas?
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Sunday, October 13th, 2013 AT 7:08 PM
Tiny
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Sunday, October 13th, 2013 AT 10:41 PM
Tiny
KHLOW2008
  • MECHANIC
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If engine is equipped with EGR, have it checked.
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Wednesday, October 23rd, 2013 AT 8:39 AM
Tiny
SOYEEZY
  • MEMBER
  • 7 POSTS
Egr is fine going to check distributor
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Wednesday, October 23rd, 2013 AT 12:16 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Let us know how it goes.
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Thursday, October 24th, 2013 AT 12:17 PM

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