Newbie Tech Section Often asked technical questions can be asked here

Choppy acceleration

Thread Tools
 
Search this Thread
 
Old 03-18-2011, 12:23 PM
  #1  
Registered User
Thread Starter
 
homesteader's Avatar
 
Join Date: Mar 2011
Location: Colorado
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Choppy acceleration

I have an 86 4-runner with EFI that I had a ton o work done last Summer including the following
oil change
F/R/brakes rotors, pad, etc.
Plugs
dist cap
new fancy muffler put on
She is running alright, but when accelerating it is really choppy sort of like a misfire, but it is not backfiring. It does not happen when idling, only when pressing on the gas initially. After engaging the pedal a fair bit, it goes away. Speed does not matter, as it happens in 1st or fifth if I let of the pedal. I have no idea where to start and the shop I took it to, said whatever even though I spent over 2K there and ask them to find everything wrong with it. This was not occuring before I took her to the shop.
Ideas on where to look would be greatly appreciated,
Devin
Old 03-18-2011, 12:36 PM
  #2  
Contributing Member
iTrader: (1)
 
James Woods's Avatar
 
Join Date: Oct 2010
Location: Down by the River
Posts: 1,626
Likes: 0
Received 1 Like on 1 Post
You said plugs and dist cap, but what about wires, rotor and fuel filter?
Old 03-18-2011, 12:37 PM
  #3  
Registered User
Thread Starter
 
homesteader's Avatar
 
Join Date: Mar 2011
Location: Colorado
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by James Woods
You said plugs and dist cap, but what about wires, rotor and fuel filter?
Sorry, wires, and I believe rotors were done also. FF was not, as I have not had time to drain the system, which I thought was required.
Old 03-18-2011, 12:45 PM
  #4  
Contributing Member
iTrader: (1)
 
James Woods's Avatar
 
Join Date: Oct 2010
Location: Down by the River
Posts: 1,626
Likes: 0
Received 1 Like on 1 Post
Drian the fuel system? You dont have to do that, the fuel filter is on the engine block not in the tank. Its under the intake manifold on the passenger side of the engine, you can see it by looking through the passenger wheel well area.
Old 03-18-2011, 01:05 PM
  #5  
Registered User
Thread Starter
 
homesteader's Avatar
 
Join Date: Mar 2011
Location: Colorado
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by James Woods
Drian the fuel system? You dont have to do that, the fuel filter is on the engine block not in the tank. Its under the intake manifold on the passenger side of the engine, you can see it by looking through the passenger wheel well area.
I will have to look at the manual again, but there something dealing with fuel that I was not ready to deal with at that time IIRC.
Old 03-18-2011, 01:08 PM
  #6  
Contributing Member
iTrader: (1)
 
James Woods's Avatar
 
Join Date: Oct 2010
Location: Down by the River
Posts: 1,626
Likes: 0
Received 1 Like on 1 Post
Also, check to see if there is any codes in the computer.
Old 03-18-2011, 01:11 PM
  #7  
Registered User
Thread Starter
 
homesteader's Avatar
 
Join Date: Mar 2011
Location: Colorado
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by James Woods
Also, check to see if there is any codes in the computer.
I am new to this, other than oil changes and plugs, so what is recommended to read the codes?
Old 03-18-2011, 01:15 PM
  #8  
Registered User
 
badattitude's Avatar
 
Join Date: Jun 2009
Location: Madison, WI
Posts: 282
Likes: 0
Received 0 Likes on 0 Posts
Some autoparts stores will read your codes at no cost. Call a couple and ask if they will read your codes. They should ask what year your truck is so they have the right code reader.
Old 03-18-2011, 01:25 PM
  #9  
Contributing Member
iTrader: (1)
 
James Woods's Avatar
 
Join Date: Oct 2010
Location: Down by the River
Posts: 1,626
Likes: 0
Received 1 Like on 1 Post
Its an 86 so an auto parts store probably wont be able to do it

https://www.yotatech.com/forums/f116...-codes-220985/

will show you how to do it, also download the FSM for your truck, it will help a lot.

https://www.yotatech.com/forums/f120...s-info-175794/
Old 03-18-2011, 01:34 PM
  #10  
Registered User
 
blake.nemitz's Avatar
 
Join Date: May 2010
Location: castle rock
Posts: 1,517
Likes: 0
Received 3 Likes on 3 Posts
get a paper clip and short e1 and te1 termonals in the diagnostic port and see if you read a code off you cel
Old 09-02-2012, 10:48 AM
  #11  
Registered User
 
lilyota1's Avatar
 
Join Date: Mar 2012
Location: Newmarket On
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
I have that exact same issue
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
shooter86314
86-95 Trucks & 4Runners
21
01-07-2016 07:05 AM
calderp
86-95 Trucks & 4Runners
17
11-16-2015 02:49 AM
Flightguy
95.5-2004 Tacomas & 96-2002 4Runners
8
10-02-2015 05:34 PM
Ott47
86-95 Trucks & 4Runners
4
09-14-2015 12:09 PM
Boomer8404
86-95 Trucks & 4Runners
3
09-10-2015 09:01 AM



Quick Reply: Choppy acceleration



All times are GMT -8. The time now is 07:44 PM.