Honda / Acura Tech Resources All honda & Acura Tech info
THIS ADSPACE OPEN FOR ADVERTISEMENT |
 |
10-17-2009, 06:31 PM
|
#1
|
|
NEWBIE ACCOUNT!
Join Date: Oct 2006
Location: Burnaby,BC
Posts: 13
Thanked 1 Time in 1 Post
Failed 1 Time in 1 Post
|
prelude won't rev past 6500 rpm after spark plug change
Anyone encountered this before? The car is a '99 honda prelude.
I just changed my spark plugs (and topped up the engine oil a bit at the same time). Now the revs are being limited to 6500. No check engine light. I tried putting the old plugs back in, and still have the problem. Also tried torquing the plugs in a bit more (was using 13 ft-lbs as per manual), but didn't help. Any ideas? Just coincidence that this happened now?
|
|
|
|
10-18-2009, 02:33 AM
|
#2
|
|
My dinner reheated before my turbo spooled
Join Date: Nov 2003
Location: Vancouver
Posts: 1,721
Thanked 80 Times in 33 Posts
Failed 0 Times in 0 Posts
|
wierd sounds like its in limp mode.
couple of things here. scan the car for codes regardless (they might not set a MIL but there can still be pending codes in the computer)
make sure the car is at operating temperature.
if that doesn't work. check the vtec solenoid and clean the screen (it could be clogged).
and if thats fine. disconnect the battery and leave it for 30 seconds and then connect it again (to clear the ECU of its memory).
but if its stopped at 6500. the ECU is trying to tell you something is wrong. most likely a sensor of some sort isn't reading properly preventing you from taking the car into more dangerous engine speeds.
|
|
|
|
|
10-18-2009, 08:03 AM
|
#3
|
|
OWNER/C.F.O./MONEYMAN
Join Date: Mar 2001
Location: Vancouver
Posts: 16,486
Thanked 2,253 Times in 626 Posts
Failed 6 Times in 3 Posts
|
reset ecu, see if that does anything.
|
|
|
|
|
10-18-2009, 10:45 AM
|
#4
|
|
NEWBIE ACCOUNT!
Join Date: Oct 2006
Location: Burnaby,BC
Posts: 13
Thanked 1 Time in 1 Post
Failed 1 Time in 1 Post
|
Thanks, guys. I did try disconnecting the battery so far. Didn't make a difference, or maybe I needed to drive around for a while before it changed. I'll have to try again and see.
Here's more info:
It used to rev past 6500 in neutral no prob. This is also happening in 1st and second gear too (haven't tried in the other gears for safety reasons).
The car is completely stock under the hood.
A friend at a honda dealership says the system might not be used to the bigger spark with the new plugs, and it might be limiting because the EGR valve has carbon buildup (it's never been cleaned or changed on my car, and this is the first time I'm changing the sparks). Supposedly there was a service bulletin about this which he's trying to find.
That sound right to anyone? Thanks for the suggestions.
|
|
|
|
|
10-18-2009, 10:43 PM
|
#5
|
|
Corny FTW!! MOD
Join Date: Nov 2001
Location: hongcouver
Posts: 2,192
Thanked 282 Times in 70 Posts
Failed 66 Times in 24 Posts
|
Wow. you're posting this everywhere... Honda-tech, here, VPC... damn... it cant be that bad. Its probably just one of your plugs. swap your old plugs back and see if it still does it. Are the plugs gapped properly?
__________________
My feedback 
Feistybearh22a: (30-0-0)
Sponsored by:
Soundsgood
For all your car audio needs!
#3-910 Tupper Avenue
Coquitlam, BC V3K 1A5
Shop: 604-961-8626
www.soundsgoodauto.com
Hours of Operation: Tuesday through Saturday, 9:00 to 6:00
|
|
|
|
|
11-18-2009, 10:32 AM
|
#6
|
|
NEWBIE ACCOUNT!
Join Date: Nov 2009
Location: surrey
Posts: 24
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
|
Is there a difference in acceleration after the change? and is the rev limiter going off?
|
|
|
|
|
11-24-2009, 08:07 PM
|
#7
|
|
Wunder? Wonder?? Wander???
Join Date: Oct 2009
Location: Vancouver
Posts: 224
Thanked 56 Times in 22 Posts
Failed 31 Times in 14 Posts
|
double check the plugs, might be improper installation.
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -8. The time now is 02:24 PM.
|
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
The banners on the left side and below do not show for registered users!
