Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Throttle response

Thread Tools
 
Search this Thread
 
Old May 13, 2007 | 07:41 PM
  #1  
fcovert2's Avatar
Thread Starter
Registered User
 
Joined: May 2007
Posts: 5
Likes: 0
From: Carver,Ma.
Throttle response

OK,Ive swapped the old engine(22RE rebuilt with Mallory dual point distributor high compression pistons and rings after market cam,after market intake manifold with Holley 4 barrel and headers,all which required me to use 100 + octane aviation fuel from the local Airport)for the new(stock 22R,with the after market intake manifold and Holley 4 banger,headers,and Mallory distributor,which runs off regular fuel)I also switched the stock Aisin hubs for Warns and kept the automatic tranny.I installed a PCV valve from the valve cover to a vacuum at the intake manifold and a hose from the crankcase hole to the air cleaner.Everything runs ten times better than the previous modified engine with one caviat.As I accelerate from the stop position and from each successive gear change in the tranny I have to feather the throttle,meaning tap it slowly,or the engine will hiccup,hessitate then accelerate until the RPMs climb to a point where it will respond normally.I put a spark sensor between the number one plug wire and the number one plug and when I throttle it manually by hand I see the spark subside until the RPMs kick up then the spark seems strong.What the &@%# is going on?
Reply
Old May 14, 2007 | 02:00 AM
  #2  
rocket's Avatar
Contributing Member
iTrader: (1)
 
Joined: Apr 2005
Posts: 4,683
Likes: 0
From: Colorado
Can you repeat that please?
Putting spaces after commas and periods would really help and so would breaking down your thoughts/sentences.

Like this.

Reply
Old May 14, 2007 | 03:01 PM
  #3  
dcg9381's Avatar
Registered User
 
Joined: Jun 2006
Posts: 1,825
Likes: 2
From: austin, tx
I'll bet you have a mixture problem over a spark problem... I'd put a simple narrowband 02 sensor in your exhaust system and see what's happening.. Those 4bbls aren't great at throttle transition points - is it right at the point where you engage the secondaries?
Reply
Old May 14, 2007 | 05:02 PM
  #4  
fcovert2's Avatar
Thread Starter
Registered User
 
Joined: May 2007
Posts: 5
Likes: 0
From: Carver,Ma.
Throttle response diatribe

OK sorry bout the ramble,too many Guinnesses.Forget the preamble.From a dead stop and when the tranny shifts from 1st to 2nd,2nd to 3rd, the engine bogs and will choke unless I tap the gas until it reaches a certain speed then it will accelerate normally.It has a Holley 4 barrel carb on an after market intake manifold.Also has a Mallory dual point distributor.I just changed the points and condensor.I also changed the plugs.I have not messed with tha carb fuel air mix,nor tested the plug wires,cap,rotor or coil.This is literally my last problem after $2000 bucks I just sunk into this rig Ive had for three years.Initial purchase price was $3500.Im stoked to ride.
Reply
Old May 14, 2007 | 05:08 PM
  #5  
yotasavg's Avatar
Registered User
 
Joined: Jan 2007
Posts: 1,987
Likes: 0
From: Chico Republic, NOR*CAL
mmmmmmmmmm. Guinness.........
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kawazx636
The Classifieds GraveYard
34
Oct 6, 2021 03:03 PM
some drunk guy
86-95 Trucks & 4Runners
23
Aug 3, 2021 06:09 PM
the_supernerd
86-95 Trucks & 4Runners
13
Oct 1, 2015 09:20 PM
shredder4286
Newbie Tech Section
4
Oct 1, 2015 01:09 PM
Sam hain
95.5-2004 Tacomas & 96-2002 4Runners
19
Sep 30, 2015 08:25 AM




All times are GMT -8. The time now is 10:40 PM.