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1996 cobra starts but dies instantly

  • Thread starter Thread starter 96Cobravert 3xblk
  • Start date Start date Apr 8, 2012
9

96Cobravert 3xblk

New Member
Apr 8, 2012
1
0
1
Apr 8, 2012
#1
  • Apr 8, 2012
  • #1
1996 cobra starts but dies instantly. Changed o2 sensor yesterday BC of bank 1 sensor 1 code. Also was pulling a bank 2 running lean code. Im not sure exactly what code they were but I will post them when I find out. This isnt my car it is my roommates that I have been helping him with. I used to be on this forum along with my brotber when we had our fox bodies. Any help is most appreciated. Glad to be back
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Apr 10, 2012
#2
  • Apr 10, 2012
  • #2
First check all fuses. Look for a vacuum leak.

It may be quitting when the PCM switches from "open loop" to "closed loop" mode. This could be from a number of things such as:
  • vacuum leak
  • bad/disconnected IAC valve.
  • bad MAF
What happens if the MAF is disconnected?

What happens if the throttle is held part way open during cranking?
 
J

jgressley2003

Founding Member
Sep 21, 2002
73
0
7
Indiana
Apr 11, 2012
#3
  • Apr 11, 2012
  • #3
I don't know where you live, but if it's cold outside and it's doing this I'm gonna take a stab in the dark and say it's your coolant temp sensor.
 

trinity_gt

10 Year Member
Jan 31, 2003
3,125
81
99
Canada
Apr 11, 2012
#4
  • Apr 11, 2012
  • #4
Is the "theft" light on the dash doing anything suspicious, like flashing?
 
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