2003 Dodge Neon Idle

2003 DODGE NEON
112,000 MILES • 4 CYL • 2WD • AUTOMATIC
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KEN LAVIGNE
  • MEMBER
  • 1 POST
I just replaced the engine because of a cracked head. The engine was running great , just hot. Ipurchased the new engine from a recycler mechanically it seams fine, but when i start the engine it pegs the rev limiter then drops down to aprox. 2200 rpms some times it backfires through the intake. the code reads out 0068, MAP sensor and idle position sensro don't match.

so far as i can see nothing is adjustable and they were all working fine before. What can you suggest.
Nov 27, 2009 at 7:14 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
Check vacuum lines routes
idle is not adjustable and check IAC
Nov 27, 2009 at 8:51 PM
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