# Honda 5-speed transmission **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [September 17, 2008, 4:32am UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676 "2008-09-17T04:32:37Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![alvertal](https://avatars.discourse-cdn.com/v4/letter/a/71c47a/32.png) [@alvertal](https://community.cartalk.com/u/alvertal)\ **Post date:** [September 17, 2008, 4:32am UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/1 "2008-09-17T04:32:37Z")
I need an advice where to find more info or how to diagnose what’s wrong with my 5 speed transmission. When shifting from 3rd to 4th gear, before rpms drop, car shakes for a few seconds. It happens only when I have low acceleration. When accelerating harder this problem disappears. The car is 01 acura cl. ---
**Author:** ![ruckus](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@ruckus](https://community.cartalk.com/u/ruckus)\ **Post date:** [September 17, 2008, 7:55pm UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/2 "2008-09-17T19:55:50Z")
How long ago were the spark plugs replaced? ---
**Author:** ![alvertal](https://avatars.discourse-cdn.com/v4/letter/a/71c47a/32.png) [@alvertal](https://community.cartalk.com/u/alvertal)\ **Post date:** [September 17, 2008, 11:45pm UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/3 "2008-09-17T23:45:55Z")
Replaced them about 50-60Kmiles ago with platinum, which supposed to last 100K. Car starts without problems and engine runs fine, but I will check spark plugs. I have also noticed that sometimes when coasting in 3rd or 4th gear (low throttle), rmps would oscillate - go up and down by ~200-300 without any reason. I was also thinking that it could be TPS related. Thanks for reply! ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [September 18, 2008, 2:15am UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/4 "2008-09-18T02:15:35Z")
You might try a fuel system cleaner like Techron, Seafoam or similar. You may have a dirty injector. Another possibility might be a defective fuel pressure regulator. ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [September 18, 2008, 2:59am UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/5 "2008-09-18T02:59:38Z")
Are you sure it is not clutch chatter? The clutch may be getting to the point it needs to be replaced. ---
**Author:** ![alvertal](https://avatars.discourse-cdn.com/v4/letter/a/71c47a/32.png) [@alvertal](https://community.cartalk.com/u/alvertal)\ **Post date:** [September 18, 2008, 3:38am UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/6 "2008-09-18T03:38:08Z")
It may be the clutch - but why shaking doesn’t happen at harder acceleration ? How does transmission shift gears? Shaking happens right before 4th gear is engaged - it seems that 3rd gear is still in and transmission has to disengage it, but then desides to put it back and then disengages again. Could it be a 3rd gear clutch pressure sensor or one of solenoids? ---
**Author:** ![ruckus](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@ruckus](https://community.cartalk.com/u/ruckus)\ **Post date:** [September 18, 2008, 3:08pm UTC](https://community.cartalk.com/t/honda-5-speed-transmission/19676/7 "2008-09-18T15:08:21Z")
Your point about the problem only happening at lower acceleration is what made me question the spark plugs. I bought a used Honda about a year ago. I started experiencing something similar to what you describe - car shakes at low acceleration but when you really get the RPMs up and delay shifting, no problem. At least initially anyway. I thought the spark plugs had been recently changed. They hadn’t. When I checked them they were ALL obviously very worn with a gap at least 3Xs as big as it should be. Cylinder 3 was actually slightly singed. That reminds me, I wanted to pull that one again after a couple weeks and make sure it still looks OK. After new plugs and wires it ran like a champ. A real easy DIY job on a Honda.