Grinding when down-shifting from 3rd to 2nd - Insight Central: Honda Insight Forum
 
Go Back   Insight Central: Honda Insight Forum > 1st Generation Honda Insight Forum > Honda Insight Forum 1st-Gen Discussion

Insightcentral.net is the premier Honda Insight Forum on the internet. Registered Users do not see the above ads.

» Auto Insurance
» Featured Product
» Wheel & Tire Center

Reply
 
LinkBack Thread Tools
Old 01-29-2008, 04:45 PM   #1 (permalink)
les
Junior Member
 
Join Date: Mar 2006
Posts: 11
Default Grinding when down-shifting from 3rd to 2nd

Anyone know what speed is recommended to down shift from 3rd to 2nd. I test drove an insight and it upshifted great through all gears however it grinds when downshifting from 3rd to second when vehicle speed is over 25km/h and over 1800rpms's. Is this normal? below this it downshifts smoothly. Anything slightly over 1800rpm's and it gets very notchy and 50-150rpm's over that will grind.

It looks like the syncro may be off. Just wondering if that' s the case what the repair costs would be.

The seller says the previous owner complained about this and they changed some components and the new owner's claim they changed the trans but it still makes the same noise. They say it is a common problem with Insights.

Thoughts???
Regards,

Les
les is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-29-2008, 05:20 PM   #2 (permalink)
Senior Member
 
Join Date: Mar 2006
Location: sergeantsville, nj
Posts: 539
Default

search, there about 8 threads i know of on this site on 2nd gear, that is the first synchro to go, mine doesnt grind, but i can feel its worn. search for:rev matching, double clutch, 2nd and you'll know as much as the rest of us. limiting downshifting is another topic that has been covered. I would not buy an insight that grinds, it will cost several thousand minimum if you're not doing the work yourself, and the used transmission you might pull from another insight could be even worse. If you want to pay like 3-4k then have honda do the work. just find another car, and use the search.
frank
__________________
2000 silver MT 122k
121k crankshaft seal
116k new egr/cleaned spacer plate
113k p1447 pack/mcm/bcm
105k engine grounds
43k LAF sensor
budomove is offline   Reply With Quote Quick reply to this message
Old 01-29-2008, 07:10 PM   #3 (permalink)
Lifetime Member
 
uhtrinity's Avatar
 
Join Date: May 2007
Location: Pocatello, ID
Posts: 1,354
Default

Mine does this too. It grinds from 3rd - 2nd pretty much how you describe, and I have to be pretty much stopped to drop to 1st. I don't want to spend the money to fix it, so unless I find a dirt cheap MT I'll deal with it. Mima does help as I can avoid downshifting by using mima to avoid lugging / stalling the engine. For 99% of my driving it isn't an issue.
__________________
Mark

2000 DIY Turboed Silver Insight, #5550
Pioneer P3900MP CD/MP3 4 X Polk Audio 6.5", Stealth Box
Mima #47, BCM Gauge, Ford Hybrid Escaped™ custom 150v 11AH battery pack w. 20% current mod, Matiz rear springs & Monroe shocks, 25mm rear wheel spacers & Blasphemer™ spat cutout, single cone tranny mod
uhtrinity is offline   Reply With Quote Quick reply to this message
Old 02-16-2008, 12:49 PM   #4 (permalink)
Member
 
Join Date: Jan 2007
Posts: 35
Default Re: Grinding when down-shifting from 3rd to 2nd

$1581.56 for an entire transmission assembly from Majestic (http://www.hondaautomotiveparts.com)

Of course that doesn't include labor...
rtm242 is offline   Reply With Quote Quick reply to this message
Old 02-16-2008, 01:51 PM   #5 (permalink)
Senior Member
 
Join Date: Apr 2003
Location: Toronto, Ontario, Canada
Posts: 1,123
Default Re: Grinding when down-shifting from 3rd to 2nd

Quote:
Originally Posted by les
Anyone know what speed is recommended to down shift from 3rd to 2nd.
Les
As long as you down shift into 2nd gear while travelling at less then 110 km/hr the engine won't over-rev and blow up
But to answer your question there is no proper speed at which to downshift from 3rd to 2nd the important factor is rev matching so when the clutch is released in 2nd gear the RPM of the engine is right at or slight above where it needs to be to synchronize the wheel speed to the engine speed. When done properly the synchros are doing very little work and releasing the clutch quickly will feel smooth because the engine will not speed up or slow down during the engagement.
Very few people know how to rev-match and even fewer people know how to heal and toe downshift or double clutch downshift properly.
Heal and toe downshifting greatly reduces wear during gear changes in regular driving conditions and are essential for mastering high performance driving techniques. Most people that drive manual transmission vehicles on the street rely on their synchros too much and release the clutch too slowly when downshifting resulting in premature synchro and clutch wear.
__________________
2000 Insight 5spd with 300,000+ Km
Daily driver (previously used for autoslalom & track lapping)
Collision avoidance and Track driving instructor
Guillermo is offline   Reply With Quote Quick reply to this message
Old 02-16-2008, 01:55 PM   #6 (permalink)
Senior Member
 
Join Date: Apr 2003
Location: Toronto, Ontario, Canada
Posts: 1,123
Default Re: Grinding when down-shifting from 3rd to 2nd

Quote:
Originally Posted by rtm242
$1581.56 for an entire transmission assembly from Majestic (http://www.hondaautomotiveparts.com)

Of course that doesn't include labor...
It's not neccessary to replace the transmission if only the synchros need replacing. But the labor of removing the transmission and opening it up will cost much more then the synchro kit, unless you are handy and can do it yourself.
__________________
2000 Insight 5spd with 300,000+ Km
Daily driver (previously used for autoslalom & track lapping)
Collision avoidance and Track driving instructor
Guillermo is offline   Reply With Quote Quick reply to this message
Old 02-16-2008, 02:00 PM   #7 (permalink)
Senior Member
 
Join Date: Apr 2003
Location: Toronto, Ontario, Canada
Posts: 1,123
Default Re: Grinding when down-shifting from 3rd to 2nd

The reason the car responds better to downshifting at very low speeds is because the engine speed difference between gears is similar down there. The reason Insight drivers may experience more synchro issues compared to other cars is because the Insight has very tall gears that are very different from each other so NOT rev- matching causes the synchros to slip for a longer time compared to other vehicles with closer gear ratios.
__________________
2000 Insight 5spd with 300,000+ Km
Daily driver (previously used for autoslalom & track lapping)
Collision avoidance and Track driving instructor
Guillermo is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Insight Central: Honda Insight Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 12:09 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Content Relevant URLs by vBSEO 3.3.2