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Warm up issue

Tiny
RONNIE GROVER
  • MEMBER
  • 2003 NISSAN FRONTIER
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 185,000 MILES
I have a supercharged engine in my truck listed above. When it is cold, cranks right up, runs fine. When it warms up, any throttle acceleration and it acts as if it has jumped timing or something. Will not hardly run at all. I am thinking possibly idle control valve or throttle position sensor. Any ideas?
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Sunday, January 14th, 2018 AT 8:44 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try taking choke cleaner and cleaning throttle plate on both sides and idle control motor hole if it has one you can see they are normally oblong. it might cure it as the plate may be sticking from oil/carbon buildup . then check fuel pressure with a gauge it may be low as well. see article
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator finally if engine light is on scan for codes auto parts does for free.
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Sunday, January 14th, 2018 AT 11:40 AM
Tiny
RONNIE GROVER
  • MEMBER
  • 4 POSTS
PO505. Idle system malfunction
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Sunday, January 14th, 2018 AT 1:58 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Please try what I suggested first then check for a vacuum leak at intake with choke cleaner spray then on yours I do not know if the motor is part of throttle body or whole thing as some are which is more expense.
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Sunday, January 14th, 2018 AT 3:42 PM
Tiny
RONNIE GROVER
  • MEMBER
  • 4 POSTS
Thank you sir. I will try this tomorrow. Will let you know the outcome.
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Sunday, January 14th, 2018 AT 4:53 PM

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