Jumpy Tachometer Revisited
Hello,
I posted a message not too long ago about my 1990 Civic's tachometer being really jumpy. A few people responded and said it is probably the ignitor. (ignition module) However, after doing a bit of thinking, and talking to a certified Honda mechanic, I would like a third opinion. The Honda mechanic mentioned that it could be the coil going bad. Since the tach gets its "reading" from the coil, and the engine IS NOT "missing", that makes me want to rule out the ignitor and believe that it is the coil. BTW, as I mentioned in my first post, before I replaced the distributor cap and rotor button, the first cap was only held on by ONE screw, and the contacts were rusted inside. Of course, rust means moisture, and moisture + an electronic coil = bad news. So, in lieu of this new information, would y'all be willing to agree with me and say it's the coil going bad? My only other thought is that it could be a sensor going bad, but how likely is that? I know my car has an Engine Speed sensor, but if I unplug that, I can't even go over 2,000RPM because the speed sensor controls the timing, so that's not the case. Does the 1990 Civic have a such thing as a "Throttle Position Sensor"? Thanks again, everyone! Jonathan |
Re: Jumpy Tachometer Revisited
I had the same problem, it was the pickup coil in the distributor. It
was $20 and took about 15 minutes to install with basic hand tools and a feeler gauge. HTH Carl "Jonathan Upright" <qaesar1@hotmail.com> wrote in message news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > Hello, > > I posted a message not too long ago about my 1990 Civic's tachometer > being really jumpy. A few people responded and said it is probably the > ignitor. (ignition module) However, after doing a bit of thinking, and > talking to a certified Honda mechanic, I would like a third opinion. The > Honda mechanic mentioned that it could be the coil going bad. Since the > tach gets its "reading" from the coil, and the engine IS NOT "missing", that > makes me want to rule out the ignitor and believe that it is the coil. BTW, > as I mentioned in my first post, before I replaced the distributor cap and > rotor button, the first cap was only held on by ONE screw, and the contacts > were rusted inside. Of course, rust means moisture, and moisture + an > electronic coil = bad news. So, in lieu of this new information, would > y'all be willing to agree with me and say it's the coil going bad? My only > other thought is that it could be a sensor going bad, but how likely is > that? I know my car has an Engine Speed sensor, but if I unplug that, I > can't even go over 2,000RPM because the speed sensor controls the timing, so > that's not the case. Does the 1990 Civic have a such thing as a "Throttle > Position Sensor"? > > Thanks again, everyone! > > Jonathan > > |
Re: Jumpy Tachometer Revisited
I had the same problem, it was the pickup coil in the distributor. It
was $20 and took about 15 minutes to install with basic hand tools and a feeler gauge. HTH Carl "Jonathan Upright" <qaesar1@hotmail.com> wrote in message news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > Hello, > > I posted a message not too long ago about my 1990 Civic's tachometer > being really jumpy. A few people responded and said it is probably the > ignitor. (ignition module) However, after doing a bit of thinking, and > talking to a certified Honda mechanic, I would like a third opinion. The > Honda mechanic mentioned that it could be the coil going bad. Since the > tach gets its "reading" from the coil, and the engine IS NOT "missing", that > makes me want to rule out the ignitor and believe that it is the coil. BTW, > as I mentioned in my first post, before I replaced the distributor cap and > rotor button, the first cap was only held on by ONE screw, and the contacts > were rusted inside. Of course, rust means moisture, and moisture + an > electronic coil = bad news. So, in lieu of this new information, would > y'all be willing to agree with me and say it's the coil going bad? My only > other thought is that it could be a sensor going bad, but how likely is > that? I know my car has an Engine Speed sensor, but if I unplug that, I > can't even go over 2,000RPM because the speed sensor controls the timing, so > that's not the case. Does the 1990 Civic have a such thing as a "Throttle > Position Sensor"? > > Thanks again, everyone! > > Jonathan > > |
Re: Jumpy Tachometer Revisited
OOPS! Forgot to mention this was in a 1984 Toyota Celica GT-S with the
fuel injected 22RE. Carl "Carl Saiyed" <carlsaiyed@hotmail.com> wrote in message news:41217078_2@newsfeed.slurp.net... > I had the same problem, it was the pickup coil in the distributor. It > was $20 and took about 15 minutes to install with basic hand tools and a > feeler gauge. > > HTH > > Carl > > > "Jonathan Upright" <qaesar1@hotmail.com> wrote in message > news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > > Hello, > > > > I posted a message not too long ago about my 1990 Civic's > tachometer > > being really jumpy. A few people responded and said it is probably > the > > ignitor. (ignition module) However, after doing a bit of thinking, > and > > talking to a certified Honda mechanic, I would like a third opinion. > The > > Honda mechanic mentioned that it could be the coil going bad. Since > the > > tach gets its "reading" from the coil, and the engine IS NOT > "missing", that > > makes me want to rule out the ignitor and believe that it is the coil. > BTW, > > as I mentioned in my first post, before I replaced the distributor cap > and > > rotor button, the first cap was only held on by ONE screw, and the > contacts > > were rusted inside. Of course, rust means moisture, and moisture + an > > electronic coil = bad news. So, in lieu of this new information, > would > > y'all be willing to agree with me and say it's the coil going bad? My > only > > other thought is that it could be a sensor going bad, but how likely > is > > that? I know my car has an Engine Speed sensor, but if I unplug that, > I > > can't even go over 2,000RPM because the speed sensor controls the > timing, so > > that's not the case. Does the 1990 Civic have a such thing as a > "Throttle > > Position Sensor"? > > > > Thanks again, everyone! > > > > Jonathan > > > > > > |
Re: Jumpy Tachometer Revisited
OOPS! Forgot to mention this was in a 1984 Toyota Celica GT-S with the
fuel injected 22RE. Carl "Carl Saiyed" <carlsaiyed@hotmail.com> wrote in message news:41217078_2@newsfeed.slurp.net... > I had the same problem, it was the pickup coil in the distributor. It > was $20 and took about 15 minutes to install with basic hand tools and a > feeler gauge. > > HTH > > Carl > > > "Jonathan Upright" <qaesar1@hotmail.com> wrote in message > news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > > Hello, > > > > I posted a message not too long ago about my 1990 Civic's > tachometer > > being really jumpy. A few people responded and said it is probably > the > > ignitor. (ignition module) However, after doing a bit of thinking, > and > > talking to a certified Honda mechanic, I would like a third opinion. > The > > Honda mechanic mentioned that it could be the coil going bad. Since > the > > tach gets its "reading" from the coil, and the engine IS NOT > "missing", that > > makes me want to rule out the ignitor and believe that it is the coil. > BTW, > > as I mentioned in my first post, before I replaced the distributor cap > and > > rotor button, the first cap was only held on by ONE screw, and the > contacts > > were rusted inside. Of course, rust means moisture, and moisture + an > > electronic coil = bad news. So, in lieu of this new information, > would > > y'all be willing to agree with me and say it's the coil going bad? My > only > > other thought is that it could be a sensor going bad, but how likely > is > > that? I know my car has an Engine Speed sensor, but if I unplug that, > I > > can't even go over 2,000RPM because the speed sensor controls the > timing, so > > that's not the case. Does the 1990 Civic have a such thing as a > "Throttle > > Position Sensor"? > > > > Thanks again, everyone! > > > > Jonathan > > > > > > |
Re: Jumpy Tachometer Revisited
Well, you win a few, you lose a few...I replaced the coil in my car...NOT
the problem. I mean, the coil did need replacing, but it wasn't causing the tach to jump. So I am learning the hard way to go with my "gut" and not think things through too much. At first I was sure it was the ignitor, but thinking about it too much made me think it was the coil. I appreciate all of the info from everyone...I have a new ignitor on order now...hopefully my problem will be solved as soon as I replace it. BTW, my car has been running progressively worse. It "misses", hesitates, and almost backfires now...*sigh* Jonathan "Jonathan Upright" <qaesar1@hotmail.com> wrote in message news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > Hello, > > I posted a message not too long ago about my 1990 Civic's tachometer > being really jumpy. A few people responded and said it is probably the > ignitor. (ignition module) However, after doing a bit of thinking, and > talking to a certified Honda mechanic, I would like a third opinion. The > Honda mechanic mentioned that it could be the coil going bad. Since the > tach gets its "reading" from the coil, and the engine IS NOT "missing", that > makes me want to rule out the ignitor and believe that it is the coil. BTW, > as I mentioned in my first post, before I replaced the distributor cap and > rotor button, the first cap was only held on by ONE screw, and the contacts > were rusted inside. Of course, rust means moisture, and moisture + an > electronic coil = bad news. So, in lieu of this new information, would > y'all be willing to agree with me and say it's the coil going bad? My only > other thought is that it could be a sensor going bad, but how likely is > that? I know my car has an Engine Speed sensor, but if I unplug that, I > can't even go over 2,000RPM because the speed sensor controls the timing, so > that's not the case. Does the 1990 Civic have a such thing as a "Throttle > Position Sensor"? > > Thanks again, everyone! > > Jonathan > > |
Re: Jumpy Tachometer Revisited
Well, you win a few, you lose a few...I replaced the coil in my car...NOT
the problem. I mean, the coil did need replacing, but it wasn't causing the tach to jump. So I am learning the hard way to go with my "gut" and not think things through too much. At first I was sure it was the ignitor, but thinking about it too much made me think it was the coil. I appreciate all of the info from everyone...I have a new ignitor on order now...hopefully my problem will be solved as soon as I replace it. BTW, my car has been running progressively worse. It "misses", hesitates, and almost backfires now...*sigh* Jonathan "Jonathan Upright" <qaesar1@hotmail.com> wrote in message news:p2eUc.259621$2o2.15469772@twister.southeast.r r.com... > Hello, > > I posted a message not too long ago about my 1990 Civic's tachometer > being really jumpy. A few people responded and said it is probably the > ignitor. (ignition module) However, after doing a bit of thinking, and > talking to a certified Honda mechanic, I would like a third opinion. The > Honda mechanic mentioned that it could be the coil going bad. Since the > tach gets its "reading" from the coil, and the engine IS NOT "missing", that > makes me want to rule out the ignitor and believe that it is the coil. BTW, > as I mentioned in my first post, before I replaced the distributor cap and > rotor button, the first cap was only held on by ONE screw, and the contacts > were rusted inside. Of course, rust means moisture, and moisture + an > electronic coil = bad news. So, in lieu of this new information, would > y'all be willing to agree with me and say it's the coil going bad? My only > other thought is that it could be a sensor going bad, but how likely is > that? I know my car has an Engine Speed sensor, but if I unplug that, I > can't even go over 2,000RPM because the speed sensor controls the timing, so > that's not the case. Does the 1990 Civic have a such thing as a "Throttle > Position Sensor"? > > Thanks again, everyone! > > Jonathan > > |
Re: Jumpy Tachometer Revisited
I have a 92 Honda Civic. The electrical diagram from the tech manual shows
the tachometer output coming directly from the ignitor to the ECU. The exact same thing happened to me. Jumpy tach and then eventually car died completley with no spark. Make sure you mark position of three bolts that attach distributer to motor if you decide to take the distributer out. Also note the position of the rotor and put it back in the same position when reinstalling so that you're not out of phase. The socket I used was a 12 metric. If you have cruise control it will probably be either not working or failing as well since it relies on the tachometer output from the ignitor as well. Good luck. Redrum |
Re: Jumpy Tachometer Revisited
I have a 92 Honda Civic. The electrical diagram from the tech manual shows
the tachometer output coming directly from the ignitor to the ECU. The exact same thing happened to me. Jumpy tach and then eventually car died completley with no spark. Make sure you mark position of three bolts that attach distributer to motor if you decide to take the distributer out. Also note the position of the rotor and put it back in the same position when reinstalling so that you're not out of phase. The socket I used was a 12 metric. If you have cruise control it will probably be either not working or failing as well since it relies on the tachometer output from the ignitor as well. Good luck. Redrum |
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