2manyprojects
New member
Verify the tach's accurate. Sound doesn't sound right to me.
Sent from my SM-G930VL using Tapatalk
Sent from my SM-G930VL using Tapatalk
The 5VZ-FE rev limiter
- Thread starter SigSaucer
- Start date
SpidermanGeek
New member
I agree as well. All of my vehicles have spent more than just the occasional time at the limiter (gott amake sure the limiter still works once in a while..heh.) and I've never had any engine trouble. In fact, my cylinders and valves are generally pretty clean any time I've checked during maintenance.
Doesn't hurt to occasionally give'er the ol' Italian tune-up once in a while.
twitchee2
Member
I agree with Nate_G there is something wrong with your tach. 1st gets me to 40mph and 2nd gets me to 70ish, I do this everyday trying to get up to freeway speeds starting on an 8% grade, loads of a fun with the 3.4...
Do you have an external hand held tach you can try just to validate?
Edit: Just re-watched your video, looks like you get close to 60mph in 1st, that would indicate its not a tach problem.
Do you have an external hand held tach you can try just to validate?
Edit: Just re-watched your video, looks like you get close to 60mph in 1st, that would indicate its not a tach problem.
muellernautique
New member
i think this is a good time for op to get a scangauge. sooner or later everyone should have one for the transmission temp gauge.
gamefreakgc
Elite Member
Unkillable
New member
What rev limiter?
Mine doesn't seem to have a limiter. There's been a couple of times when I haven't been paying enough attention and realised that the tacho is pegged at just over 6500rpm. Not really willing to recreate that for a picture but here's one of it at 6200: https://photos.app.goo.gl/FJeESC442uN4uRwN8
Mine doesn't seem to have a limiter. There's been a couple of times when I haven't been paying enough attention and realised that the tacho is pegged at just over 6500rpm. Not really willing to recreate that for a picture but here's one of it at 6200: https://photos.app.goo.gl/FJeESC442uN4uRwN8
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trackntrail
New member
How is that 6200? Looks like the normal 5600RPM limiter to me.
Found this thread after googling the exact same 'issue'.
Today on the freeway I completely floored it with purpose and with more force than usual. The tranny downshifted and the revs bounced aggressively passed the redline to around 5.5k. I saw this happen and let off the pedal.
I have owned the car for a year now and this is the first time it's happened to me and it was very noticeable and loud. I've got to say I was blown away by the acceleration but it's not something I will be repeating regularly in future.
I was also traveling down an incline when this happened, not sure if that matters. To scared to see if it goes past 5.5k on the tacho...
Today on the freeway I completely floored it with purpose and with more force than usual. The tranny downshifted and the revs bounced aggressively passed the redline to around 5.5k. I saw this happen and let off the pedal.
I have owned the car for a year now and this is the first time it's happened to me and it was very noticeable and loud. I've got to say I was blown away by the acceleration but it's not something I will be repeating regularly in future.
I was also traveling down an incline when this happened, not sure if that matters. To scared to see if it goes past 5.5k on the tacho...
gamefreakgc
Elite Member
You can't really hurt the engine, although I agree on not redlining a 20 year old engine just for kicks on a regular basis. The redline on an auto is governed by the ECU. Drop the shifter into "L" or "2" and you can surpass the ECU's 5500 RPM limit. I stopped just past 6000 RPM's as there absolutely no power that high on these engines anyway. Above 6000 you'll start to float the valves, meaning the valve springs cannot close the valve fast enough so the intake and exhaust valves are open during the combustion stroke which as you might guess, makes basically no power. Our torque curve peaks at 3600 RPM and HP peaks at 4800 RPM, after that it drops very quickly.
Malcolm99
Member
I'll be the first to admit this title put a smile on my face, but no joy. Anyways I notice some are comparing the rev limiter to the OP parked, I think the rev limiter might be lowered while not moving, I know my 92 Mitsu has different rev limiter for stopped and rolling via the VSS, so something to consider, perhaps the manual guys are a better measure although again maybe a difference MT/AT. But like said after 4500 it starts to fall on its face. Perhaps the "kick down" trans pressure cable is to tight I dunno, not normal though, gotta push the pedal far on the 5vz-Fe, and that support for all the cables on the intake usually bends and slacks off not tighten up, so I dunno.
The "kick down" cable only controls line pressure in the transmission. This affects how firm or soft the transmission shifts. That cable has nothing to do with shift points or down shifting or up shifting.
gamefreakgc
Elite Member
It does affect down shifting. I have mine overtightened by about 3mm to prevent the low-RPM ping issues supercharged engines do. By overtightening it mimics the throttle valve being open further than it really is. There's a limit on how much it can be over tightened though before it causes issues.
On the flip side, because it's overtightened the torque convertor doesn't lock up as often.
Per the FSM it only controls line pressure in the transmission. The transmission shifts are electronically controlled and get no data from the line pressure valve or the cable that's controlling it.
gamefreakgc
Elite Member
Just try it. It doesn't change the set RPM's on when it shifts at a certain throttle value, it tricks the transmission into thinking the throttle valve is open more than it is.
