Nissan/Infiniti Tech SR20DET? RB26DETT? VQ35DE? What's it all mean? Find out here!

Help 94 dohc lags after 2500rpm

Thread Tools
 
Old 06-27-2008, 08:19 PM
  #1 (permalink)  
(SHIFT-YOUR SHITS WEAK)
Thread Starter
 
A-ron's Avatar
 
Join Date: Nov 2006
Posts: 2,356
Likes: 0
Received 0 Likes on 0 Posts
Exclamation Help 94 dohc lags after 2500rpm

yeh i just bought the car last week and when i test drove it. it did it then i just thought it was the dizzy timing no biggie right well its not. the car runs fine up to 2500rpm then boggs down then it pulls then boggs down again all the way to 6000rpm thats all i took it to. i've messed with the dizzy slowly then drive it. it still does the same thing just worse. if the chain was off by a little would'nt it run even worse than that or even not start? any help would be nice. i hope i dont have to change my timing chain cus its a pain in my dick.
__________________
Drifting:
most fun you can have
with your pants on.


Old 06-27-2008, 08:29 PM
  #2 (permalink)  
RIP DJ YOU WILL BE MISSED
 
lordofthemiasma's Avatar
 
Join Date: Nov 2005
Posts: 3,009
Likes: 0
Received 0 Likes on 0 Posts
Default

sounds to me like the mafs is bad.... i have several hit me up if you need one.
__________________




RIP my very best friend. DJ aka djzstang1 you will be missed dearly. I love you bro.

1995 240sx se
1992 240sx
1990 240sx se
1991 240sx hicas sr20det MDX
1991 240sx project coupe
1990 240sx drift beater hatch
1993 240sx sr20det
Old 06-27-2008, 08:42 PM
  #3 (permalink)  
(SHIFT-YOUR SHITS WEAK)
Thread Starter
 
A-ron's Avatar
 
Join Date: Nov 2006
Posts: 2,356
Likes: 0
Received 0 Likes on 0 Posts
Default

i have a spare ill put that thing on later. hope thats it thanks
__________________
Drifting:
most fun you can have
with your pants on.


Old 06-28-2008, 10:53 AM
  #4 (permalink)  
(SHIFT-YOUR SHITS WEAK)
Thread Starter
 
A-ron's Avatar
 
Join Date: Nov 2006
Posts: 2,356
Likes: 0
Received 0 Likes on 0 Posts
Default

i put it on and it does the samething any other guess's on what it could be. it just boggs down then pulls anywhere after 2500rpm. its starting to piss me off.
__________________
Drifting:
most fun you can have
with your pants on.


Old 06-28-2008, 11:17 AM
  #5 (permalink)  
Electronicals master ;P
 
+Waldo+'s Avatar
 
Join Date: Mar 2005
Posts: 7,408
Likes: 0
Received 0 Likes on 0 Posts
Default

defff sounds like a maf, i had the same problema nd then my spare was a dud too

also what can happen is the wires goes to shit before the maf thus making the maf read shitty, so u might wanna trace wires too... turned out to be my problem
__________________
Sponsored By Carrabba's

R.I.P. Tim Aldrich
Old 06-28-2008, 11:02 PM
  #6 (permalink)  
(SHIFT-YOUR SHITS WEAK)
Thread Starter
 
A-ron's Avatar
 
Join Date: Nov 2006
Posts: 2,356
Likes: 0
Received 0 Likes on 0 Posts
Default

ill trace the wires later but i found out that it only does it when the car is warmed up cuz if the car is cold it wont do it. it's weird. also i put my other one on there it does the same thing do i have to reset the ECU or somthing?
__________________
Drifting:
most fun you can have
with your pants on.


Old 06-29-2008, 06:33 AM
  #7 (permalink)  
Electronicals master ;P
 
+Waldo+'s Avatar
 
Join Date: Mar 2005
Posts: 7,408
Likes: 0
Received 0 Likes on 0 Posts
Default

trace wires, sounds like u got something touchin/bad connection bro


other then that idk...
__________________
Sponsored By Carrabba's

R.I.P. Tim Aldrich
Old 06-29-2008, 07:31 AM
  #8 (permalink)  
3 rotor whachakno
 
jdmpete's Avatar
 
Join Date: Oct 2006
Posts: 835
Likes: 0
Received 0 Likes on 0 Posts
Default

if the maf was bad he would not be able to take it all the way to 6k...

it would bog at 3 and stay there...
__________________

your a fanboy
I'M KILLING IT
Old 06-29-2008, 08:22 AM
  #9 (permalink)  
RIP DJ YOU WILL BE MISSED
 
lordofthemiasma's Avatar
 
Join Date: Nov 2005
Posts: 3,009
Likes: 0
Received 0 Likes on 0 Posts
Default

not in my experience, i had an s14 with a bad maf and it would rev all the way up to 62 and then shift ( it was auto). drove normal other than the bogging bullshit.
__________________




RIP my very best friend. DJ aka djzstang1 you will be missed dearly. I love you bro.

1995 240sx se
1992 240sx
1990 240sx se
1991 240sx hicas sr20det MDX
1991 240sx project coupe
1990 240sx drift beater hatch
1993 240sx sr20det
Old 06-29-2008, 09:21 AM
  #10 (permalink)  
(SHIFT-YOUR SHITS WEAK)
Thread Starter
 
A-ron's Avatar
 
Join Date: Nov 2006
Posts: 2,356
Likes: 0
Received 0 Likes on 0 Posts
Default

so about it only screwing up when the motor is warm. could that be the mafs? or do i have to reset the ECU. im just going to try to read the codes off the ECU that should tell me. but if u know what it cuold be let me know please.
__________________
Drifting:
most fun you can have
with your pants on.





All times are GMT -8. The time now is 09:50 PM.