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I need to find out why my car will not run without my foot on the gas, the engine was just rebuilt.

Tiny
USMC1986ZW
  • MEMBER
  • 2003 NISSAN ALTIMA
  • 150,000 MILES
I have a 03' Altima 2.5L that had the engine rebuilt. It had a timing problem from initial start up and bent valves on the original head. The head was replaced and timing reset, only to find out that the timing chain tensioner was bad. Changed the tensioner, and it started. Now the issue is the engine will not stay running without your foot on the gas. As soon as you let the pedal out to let it idle, it stalls. At about 1500 rpm, it sounds as if it is pinging. The trouble codes it threw out were p1122, p0223, p0123, p2135, p0300, p1122, p0223, p0123, and p2135. What could be the cause of this?
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Tuesday, May 15th, 2012 AT 1:29 PM

11 Replies

Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
All these codes have to do with the TPS. Check your connections to the throttle, make sure there are no bent pins. If you need diagrams I can supply a few.
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Tuesday, May 15th, 2012 AT 1:51 PM
Tiny
USMC1986ZW
  • MEMBER
  • 5 POSTS
Diagrams would be awesome!
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Tuesday, May 15th, 2012 AT 1:55 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Just real quick, it is a cable throttle with a TPS sensor? Or is it a electronic throttle body?
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Tuesday, May 15th, 2012 AT 1:57 PM
Tiny
USMC1986ZW
  • MEMBER
  • 5 POSTS
I looked at the pins and connector, there are no bent pins, nor dirt, grease, oil, or crap in the plug.
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Tuesday, May 15th, 2012 AT 1:58 PM
Tiny
USMC1986ZW
  • MEMBER
  • 5 POSTS
Its an electronic throttle body
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Tuesday, May 15th, 2012 AT 1:59 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
This is how to test the actual TPS
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Tuesday, May 15th, 2012 AT 2:12 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
With so many codes on the same component, the most likely cause would be a bad connection. If the TP sensor was removed, it could have been installed out of position.
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Tuesday, May 15th, 2012 AT 2:21 PM
Tiny
USMC1986ZW
  • MEMBER
  • 5 POSTS
It was never removed from the throttle body. The throttle body was never removed from the plenum.
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Tuesday, May 15th, 2012 AT 2:47 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
When u did the job, u didnt remove the engine did you? Or did u just pull the head?
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Tuesday, May 15th, 2012 AT 2:55 PM
Tiny
USMC1986ZW
  • MEMBER
  • 5 POSTS
It was a total rebuild top to bottom.
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Tuesday, May 15th, 2012 AT 4:24 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Then really all that I can really do is tell you to just trace the harness, make sure that everything is intact and that nothing got pinched in the process of pulling the engine out.
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Wednesday, May 16th, 2012 AT 8:29 PM

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