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#1
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Governor
I have a 93 SC2. The car has 100k on it and now it acts like there is
a governor on it. It will not go over 3k rpm. I pulled the exhaust thinking it might have been the cat convertor but that was not it and I am stumped. I was just wondering if anyone else had this problem? |
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#2
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#3
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Good point Blah...
There is a rev limiter that keeps it to about 3K when out of gear. This is to prevent damage in case of a missed shift (or to keep those crazy kids from doing 6 grand neutral drops). If your problem is in drive too, check out the signaling from the transaxle back to the ECU/Power train controller. Oppie _________________ "Blah Blah" > wrote in message ... | In article >, | says... | > I have a 93 SC2. The car has 100k on it and now it acts like there is | > a governor on it. It will not go over 3k rpm. I pulled the exhaust | > thinking it might have been the cat convertor but that was not it and | > I am stumped. I was just wondering if anyone else had this problem? | > | | Is it doing this while in "park" only? |
#4
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>Good point Blah...
>There is a rev limiter that keeps it to about 3K when out of gear. This is >to prevent damage in case of a missed shift (or to keep those crazy kids >from doing 6 grand neutral drops). If your problem is in drive too, check >out the signaling from the transaxle back to the ECU/Power train controller. > Oppie Actually the rev limiter is at 4000 RPM and it is when the car is stopped, regardless of what gear its in(does nothing to prevent missed shifts). When the car is moving the limiter is at 6750. You can test it by parking on a hill, in neutral, brakes on. Raise the RPMS till its on the 4000 limiter then release the brake. Once you start rolling a bit the limiter turns off and it'll rev up. |
#5
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"BANDIT2941" > wrote in message
... | Actually the rev limiter is at 4000 RPM and it is when the car is stopped, | regardless of what gear its in(does nothing to prevent missed shifts). When the | car is moving the limiter is at 6750. Thought I recalled that (on the L-series at least) the low speed governor was only active in neutral. So it goes with the 53 year old mind... |
#6
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#7
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In article >, bandit2941
@aol.comNHRA says... > >Good point Blah... > >There is a rev limiter that keeps it to about 3K when out of gear. This is > >to prevent damage in case of a missed shift (or to keep those crazy kids > >from doing 6 grand neutral drops). If your problem is in drive too, check > >out the signaling from the transaxle back to the ECU/Power train controller. > > Oppie > > Actually the rev limiter is at 4000 RPM and it is when the car is stopped, > regardless of what gear its in(does nothing to prevent missed shifts). When the > car is moving the limiter is at 6750. > > You can test it by parking on a hill, in neutral, brakes on. Raise the RPMS > till its on the 4000 limiter then release the brake. Once you start rolling a > bit the limiter turns off and it'll rev up. > It sometimes varies from one make and model to another. I wasnt sure where it was on a Saturn. |
#8
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>I wonder where 4000 rpm stands in the realm of launch RPM? Maybe
>Saturn's engineers were told to 'limit the RPM in neutral when stopped', >and picked a good number > It works well. I've used it on the dragstrip........ |
#9
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This does it all the time in gear or out.. I also tried a different
PCM thinking it was that but no difference. Am I looking for a sensor on the transaxle? Camper On Sun, 29 Aug 2004 10:48:29 -0400, "Oppie" > wrote: >Good point Blah... >There is a rev limiter that keeps it to about 3K when out of gear. This is >to prevent damage in case of a missed shift (or to keep those crazy kids >from doing 6 grand neutral drops). If your problem is in drive too, check >out the signaling from the transaxle back to the ECU/Power train controller. > Oppie > >_________________ >"Blah Blah" > wrote in message ... >| In article >, >| says... >| > I have a 93 SC2. The car has 100k on it and now it acts like there is >| > a governor on it. It will not go over 3k rpm. I pulled the exhaust >| > thinking it might have been the cat convertor but that was not it and >| > I am stumped. I was just wondering if anyone else had this problem? >| > >| >| Is it doing this while in "park" only? > |
#10
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I'd first get the codes checked. You should be able to read them out
shorting the test pins on the diagnostic connector. See if there are and relevant codes first. > wrote in message news > This does it all the time in gear or out.. I also tried a different > PCM thinking it was that but no difference. Am I looking for a sensor > on the transaxle? > Camper |
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