1997 Hyundai Elantra high rpm when shifting gear

1997 HYUNDAI ELANTRA
120,000 MILES • 1.5L • 4 CYL • 2WD • MANUAL
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WAEL85
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  • 5 POSTS
When I drive the car and try to shift into higher gear or lower one I press the clcomparison with all similar car.
Pedal to shift gear but I noticed that the engine rpm is at 1500 to 2000 and not slowly drop to750 rpm to move on next gear .
so the rpm should drop down to idle . But in my car it takes more time to drop in comparison with similar car.
I have no trouble codes everything seems OK.
I have tried to drive another cars like mine and they all seem good and none of them has a problem in driving like mine.
please help me solve the problem.
Aug 19, 2014 at 2:20 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
try cleaning throttle plate on both sides and iac hole with choke cleaner
Aug 19, 2014 at 2:32 AM
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WAEL85
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  • 5 POSTS
I have cleaned throttle body million times and cleaned the iac. Even I have tried another iac but the problem is still on.
Aug 19, 2014 at 2:42 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
ok then check for a vacuum leak, hoses off, split cracked and around intake manifold also check fuel pressure with a gauge
Aug 19, 2014 at 5:27 AM
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WAEL85
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  • 5 POSTS
Thank you for your reply.
But trusproblemhave done all of what you have mentioned.
And also I replaced head gasket , intake manifold
gasket and throttle body gasket .
So I dont think the reason of that problem is because of a vaccum leak.
Thank you for your patience.
Are there any other possible reasons for my car problem?
Aug 19, 2014 at 5:50 AM
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WAEL85
  • MEMBER
  • 5 POSTS
Sorry about spelling mistakes.
Its because of the keypad in my mobile phone.
Aug 19, 2014 at 5:53 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
this is the only thing I can think of check intake vacuum at idle if 15" or below suspect a clogged exhaust system. I can't think of anything else unless I physically looked at it.
Aug 19, 2014 at 7:11 AM
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WAEL85
  • MEMBER
  • 5 POSTS
Thanks again for replying.
if you remember something else to help me in my car,just send it .

Thank you .
Aug 19, 2014 at 7:22 AM
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