1994 civic - engine revving itself in neutral
Hi all,
My prize 1994 Civic EX has a new problem, wonder if anyone knows what the prob may be... In park and neutral, the car revs every 3-4 seconds. i.e. it's a cycle that repeats itself every 3-4 seconds where the engine revs up slightly, settles back down, and repeats. Otherwise, the car runs fine. Any ideas on what to look at? Thanks. |
Re: 1994 civic - engine revving itself in neutral
"hutchtoo" <hutchtoo@gmail.com> wrote in
news:l-OdnQkWqIqu2F7fRVn-og@rcn.net: > Hi all, > > My prize 1994 Civic EX has a new problem, wonder if anyone knows what > the prob may be... > > In park and neutral, the car revs every 3-4 seconds. i.e. it's a cycle > that repeats itself every 3-4 seconds where the engine revs up > slightly, settles back down, and repeats. > > Otherwise, the car runs fine. Any ideas on what to look at? > > Thanks. > > When did this start? What (if any) work was done on the motor prior to onset? How's the coolant level? How old is the thermostat? When were the cap/rotor/wires/plugs changed last? -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: 1994 civic - engine revving itself in neutral
"hutchtoo" <hutchtoo@gmail.com> wrote in
news:l-OdnQkWqIqu2F7fRVn-og@rcn.net: > Hi all, > > My prize 1994 Civic EX has a new problem, wonder if anyone knows what > the prob may be... > > In park and neutral, the car revs every 3-4 seconds. i.e. it's a cycle > that repeats itself every 3-4 seconds where the engine revs up > slightly, settles back down, and repeats. > > Otherwise, the car runs fine. Any ideas on what to look at? > > Thanks. > > When did this start? What (if any) work was done on the motor prior to onset? How's the coolant level? How old is the thermostat? When were the cap/rotor/wires/plugs changed last? -- TeGGeR® The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ |
Re: 1994 civic - engine revving itself in neutral
TeGGeR, thanks for the reply.
> When did this start? What (if any) work was done on the motor prior to > onset? No work done beforehand other than an oil change, the revving started in the winter, forgot about it, just started again. Happens on engine start, not on a warm engine. > How's the coolant level? Fine. > > How old is the thermostat? I don't remember replacing it, so probably 12 years. :) > > When were the cap/rotor/wires/plugs changed last? I don't get tune ups often, so at least a couple years. |
Re: 1994 civic - engine revving itself in neutral
TeGGeR, thanks for the reply.
> When did this start? What (if any) work was done on the motor prior to > onset? No work done beforehand other than an oil change, the revving started in the winter, forgot about it, just started again. Happens on engine start, not on a warm engine. > How's the coolant level? Fine. > > How old is the thermostat? I don't remember replacing it, so probably 12 years. :) > > When were the cap/rotor/wires/plugs changed last? I don't get tune ups often, so at least a couple years. |
Re: 1994 civic - engine revving itself in neutral
"hutchtoo" <hutchtoo@gmail.com> wrote in message
news:veqdnaL1mqdp0V7fRVn-hA@rcn.net... >> How's the coolant level? > > Fine. > >> >> How old is the thermostat? > > I don't remember replacing it, so probably 12 years. :) > It sounds like a replacement thermostat and bleed of the coolant system after that would be a good investment. The coolant level in the radiator can be right to the top but enough air can be trapped to cause your symptoms. Mike |
Re: 1994 civic - engine revving itself in neutral
"hutchtoo" <hutchtoo@gmail.com> wrote in message
news:veqdnaL1mqdp0V7fRVn-hA@rcn.net... >> How's the coolant level? > > Fine. > >> >> How old is the thermostat? > > I don't remember replacing it, so probably 12 years. :) > It sounds like a replacement thermostat and bleed of the coolant system after that would be a good investment. The coolant level in the radiator can be right to the top but enough air can be trapped to cause your symptoms. Mike |
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