2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Will Start ... Won't Run HELLLP!!

Thread Tools
 
Search this Thread
 
Old 09-03-05, 11:29 AM
  #1  
Full Member

Thread Starter
iTrader: (2)
 
walterwible's Avatar
 
Join Date: Jul 2005
Location: Huntsville, AL
Posts: 95
Likes: 0
Received 0 Likes on 0 Posts
Will Start ... Won't Run HELLLP!!

I bring my problems to this forum just to amuse you folks.

Honest to God, this is what is happening.

1. Engine will NOT start at all with Air Mass Flow Meter elctrinically connected. Yes, I have established that by trying it connected and disconnected three times.

2. Engine WILL start with the Air Mass Flow Meter disconnected, but will only run for several seconds (10-15?), then it dies. It will restart, but run an even shorter period of time before it dies. (All this with me working the throttle.)

I disconnected the fuel line and cranked the engine and gas gushed out, so I KNOW that the fuel pump is working. Plus, the engine DOES start.

I just got through replacing all the fuel lines, oil lines, vacuum lines, fuel pulsation damper and plugs, so I had the entire top of the engine apart. I don't THINK I have any disconnected vacuum lines (I replaced them one at a time to be sure that I got them right.).

I readjusted the throttle cable length a bit, bit I don't think that would make the engine die.

Please tell me what you might know about this wierd situation.

Thank you,

Walt
Old 09-03-05, 12:26 PM
  #2  
HAILERS

 
HAILERS's Avatar
 
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes on 19 Posts
Try another USED afm. It's possible the ECU's 5vdc Ref Voltage is being drowned out by something wrong in the afm. If the 5vdc Ref voltage is kaput you don't get spark.

Or you could prove this one way or the other. You could leace the afm connected and spin the engine while checking to see if the sparkplugs are sparking or not. If they are sparking then my idea is all wet. If the sparkplugs are not sparking, I might be right and you should try a USED afm to see if things improve.

Or if you had a digital meter you could check other things.
Old 09-03-05, 12:42 PM
  #3  
Full Member

Thread Starter
iTrader: (2)
 
walterwible's Avatar
 
Join Date: Jul 2005
Location: Huntsville, AL
Posts: 95
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by walterwible

2. Engine WILL start with the Air Mass Flow Meter disconnected, but will only run for several seconds (10-15?), then it dies. It will restart, but run an even shorter period of time before it dies. (All this with me working the throttle.)

Walt
The plugs are sparking because the engine does run, albeit for a very short period of time.
Old 09-03-05, 12:51 PM
  #4  
Full Member

 
Trolloc's Avatar
 
Join Date: Oct 2003
Location: Longview, TX
Posts: 229
Likes: 0
Received 0 Likes on 0 Posts
open up the mass air meter and see if the conections are broken my roommates s4 had taht prob it would start but if u let it idle or pressed on the gas it would die
Old 09-03-05, 01:17 PM
  #5  
Rotary Apprentice

 
NOPR's Avatar
 
Join Date: Jan 2005
Location: USA
Posts: 2,181
Likes: 0
Received 0 Likes on 0 Posts
i would say the air flow meter needs fixed or replaced. It's clearly the source of the problem here.
Old 09-05-05, 03:58 PM
  #6  
Full Member

 
Sergei The Saint's Avatar
 
Join Date: Oct 2002
Location: Utah
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts
Where on the intake exactly do I find the air flow meter and where is it suppost to go? I have mushroom intake that was put in by the guy who owned the car before me, i am in a very similar situation and I 'm just going through possible solutions, this is sounding very promising, could someone point me in the right direction?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM
PhillyFC
General Rotary Tech Support
9
08-21-15 06:36 PM



Quick Reply: Will Start ... Won't Run HELLLP!!



All times are GMT -5. The time now is 01:49 AM.