Vheicle shuts down and runs bad

Tiny
ROB.KELA
  • MEMBER
  • 1993 TOYOTA CAMRY
  • 21,000 MILES
This car was working fine but than one day it just shut down while driving, we replaced the ecu and it runs fine for about 10 miles down the road and than it acts up, the distruiber is new plugs wires, I would like to rule out the fuel pump to. So any tips or you guys ran in to this or is it commin. Thank you so much.
Monday, December 26th, 2011 AT 5:28 PM

8 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So when it shuts off and wont start what do you lose spark fuel pressure or injector pulse?
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Monday, December 26th, 2011 AT 5:38 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
After shutting down, were you able to restart?
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Monday, December 26th, 2011 AT 6:24 PM
Tiny
ROB.KELA
  • MEMBER
  • 21 POSTS
Yes I was able to restart, than it will run fine and than a little while later it "acts up". I was also trying to figure out of a ground was starting to not work. Or for some reason a computer component was heating.
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Monday, December 26th, 2011 AT 6:47 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Did the MIL come on when problem occurs?

This is not going to be easy to detect and one of the things you need to do is to monitor the fuel pressure.

Prior to stalling, did the engine seem to misfire badly( an ignition spark related problem) or did it seems to be loose power gradually ( due to fuel starvation )?
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Monday, December 26th, 2011 AT 7:03 PM
Tiny
ROB.KELA
  • MEMBER
  • 21 POSTS
Yes a half a second, a quick surge almost like total power loss foe half a second, and if ideling will stall but starts up right.
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Monday, December 26th, 2011 AT 7:58 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Stalling during idling could be due to low idling speed but power loss before stalling indicates it could be a fault with the fuel delivery system. It could be a failing fuel pump, electrical circuit of the fuel pump, which could be a bad relay, ignition switch or poor cntact.
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Monday, December 26th, 2011 AT 8:06 PM
Tiny
ROB.KELA
  • MEMBER
  • 21 POSTS
Thank you so much
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Monday, December 26th, 2011 AT 8:16 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You're welcome.

Have the IAC cleaned and retest. It could be the idle control that is causing the problem.

Happy holidays.
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Monday, December 26th, 2011 AT 8:26 PM

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