Hesitation under heavy acceleration - YotaTech Forums


Go Back   >


95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners
Sponsored by:
Click Here

Hesitation under heavy acceleration

Reply
 
LinkBack Thread Tools Search this Thread
Old 03-17-2007, 06:41 PM   #1
Registered User
Thread Starter
 
rbh261's Avatar
 
Join Date: Nov 2004
Location: Martinsville, VA
Posts: 156
Hesitation under heavy acceleration

I know this has been brought up many times. I've done everything I have read and can think of. The only thing I haven't tried to fix the problem is replacing the brand new Bosch +2 plugs with NGK. I bought the plugs and wires before reading everything here on the forum. I have also cleaned the MAF, checked for vac leaks and replaced the TPS. Could the Bosch plugs be causing the hesitation during hard acceleration? The problem is at 3k to 4k rpm range. I have done all that I can without a diagnostic tool. I have one available to me, but not for another week or so. Any help here would be appreciated.
rbh261 is offline   Reply With Quote
Old 03-18-2007, 04:16 AM   #2
Contributing Member
 
Elton's Avatar
 
Join Date: Jul 2005
Location: Siletz,Oregon
Posts: 12,261
i would change out those bosch plugs asap
Elton is offline   Reply With Quote
Old 03-18-2007, 06:54 AM   #3
Contributing Member
 
MTL_4runner's Avatar
 
Join Date: Jul 2003
Location: Montreal, QC Canada
Posts: 8,807
Quote:
Originally Posted by Elton View Post
i would change out those bosch plugs asap
Ditto......that should be the very FIRST thing you do (OEM dual electrode Denso or NGK's only!!!!!). Clean the MAF with brake cleaner and air dry. Also thoroughly clean the throttle body with an old toothbrush and some "sensor safe" carb cleaner. After that post back and tell us where you stand.
MTL_4runner is offline   Reply With Quote
Old 03-19-2007, 10:27 AM   #4
Registered User
Thread Starter
 
rbh261's Avatar
 
Join Date: Nov 2004
Location: Martinsville, VA
Posts: 156
I'm getting Autozone to take the Bosch plugs back. They have the NGK's in stock, so I'm getting those today. I'll get back to you guys soon to let you know what this does for me.
rbh261 is offline   Reply With Quote
Old 03-19-2007, 04:24 PM   #5
Registered User
Thread Starter
 
rbh261's Avatar
 
Join Date: Nov 2004
Location: Martinsville, VA
Posts: 156
Got the NGK's in this evening. I have only driven 6 miles since, but I think it's cured. After I log some more miles, I'll post again.
rbh261 is offline   Reply With Quote
Old 03-21-2007, 05:15 PM   #6
Registered User
Thread Starter
 
rbh261's Avatar
 
Join Date: Nov 2004
Location: Martinsville, VA
Posts: 156
Yes! Hesitation is GONE! I have since found out that Chevy's suffer the same problems with these plugs. Who knows what other vehicles do as well. Imagine the people who go on assuming that expensive Bosch plugs couldn't be bad for their engines. Without this forum I may have been one of those people. Thanks guys.

The new Bosch o2 sensor has since been pulled out and replaced with a Denso. I don't think I'll buy anymore Bosch products, at least not for my Toyota.
rbh261 is offline   Reply With Quote
Old 03-22-2007, 04:14 AM   #7
Registered User
 
mkgarrison5's Avatar
 
Join Date: Feb 2007
Location: NC
Posts: 1,511
Quote:
Originally Posted by rbh261 View Post
Yes! Hesitation is GONE! I have since found out that Chevy's suffer the same problems with these plugs. Who knows what other vehicles do as well. Imagine the people who go on assuming that expensive Bosch plugs couldn't be bad for their engines. Without this forum I may have been one of those people. Thanks guys.

The new Bosch o2 sensor has since been pulled out and replaced with a Denso. I don't think I'll buy anymore Bosch products, at least not for my Toyota.
yeah i was an idiot one time and installed bosch in my jeep wrangler.. then wondered for a few months why things were different and i came across ajeep forum and they said the same things the guys here do "GET THOSE PIECES OF SH$T OUT OF YOUR MOTOR".. hahaha...
mkgarrison5 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Crankshaft Pulley Bolt Removal Problem Obmi 86-95 Trucks & 4Runners 51 10-04-2015 11:30 AM
Transmission rattle Flightguy 95.5-2004 Tacomas & 96-2002 4Runners 8 10-02-2015 05:34 PM
92 Yota pickup throttle slam/jerk shredder4286 Newbie Tech Section 4 10-01-2015 01:09 PM
Leaf Springs 83 95.5-2004 Tacomas & 96-2002 4Runners 3 09-27-2015 04:13 PM
95 T4R not passing emissions. Boomer8404 86-95 Trucks & 4Runners 3 09-10-2015 09:01 AM


Tags
2009, 4runner, 91, 94, accelaration, acceleration, cab, hesitate, hesitatestumle, hesitation, jeep, jerking, toyota, tundra, wrangler

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 07:39 PM.


2010 InternetBrands, Inc.