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RPM at 3000 when doing 110km/hr (5th gear)
10-28-2012, 05:29 PM
Post: #1
RPM at 3000 when doing 110km/hr (5th gear)
Hello,

i have a 1999 VW Jetta GL 2.0. when im driving on the highway and doing about 110KM/Hr in 5th gear the RPM is at 3000, that seems too high! and also what i have noticed is that the engine cools down, the gauge for the engine where it shows if the car is warm or cold, drops significantly when on the highway! please help me understand why this is happening? Thank you.....

Kas
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10-28-2012, 11:25 PM
Post: #2
RE: RPM at 3000 when doing 110km/hr (5th gear)
Most likely you have two separate issues.

The temp is probably related to a bad thermostat. The RPM at that speed (roughly 68 MPH) does sound high. If there's any odd smells I would suspect a bad clutch.
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10-29-2012, 08:19 AM
Post: #3
RE: RPM at 3000 when doing 110km/hr (5th gear)
the clutch was changed about a week ago and there is no bad smell! thanks for helping me understand
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10-30-2012, 11:12 PM (This post was last modified: 10-31-2012 06:28 AM by Garner.)
Post: #4
RE: RPM at 3000 when doing 110km/hr (5th gear)

the problem was the catalytic Convertor and a bad ignition Coil, i changed them both and did a full tune up and the RPM is back to normal!
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10-31-2012, 06:24 AM (This post was last modified: 11-04-2012 09:53 AM by Garner.)
Post: #5
RE: RPM at 3000 when doing 110km/hr (5th gear)
Wow, I don't understand this one at all. A plugged catalytic converter should have caused a "High" engine temperature & possible "rotten egg" smell. A bad ignition coil should have caused a miss, rich exhaust & possibly was the cause of the catalytic converter plugging. But I don't understand how any of that relates to a high RPM situation on a standard transmission??? Unless the clutch is slipping; (as Rupe mentioned), the RPMs should be consistent in each gear according to road speed no matter how poorly the engine is running.

What am I missing here? Can anybody explain this to me? It sounds to me like the mechanic adjusted a slipping clutch & then made a couple of other repairs. Also makes me start to question why the clutch was replaced in the first place?

Thanks for using the forum,
Garner

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