1994 nissan altima sometimes sluggish at take off, high rpms when changing gears

SOURCE: 2002 nissan altima p0507 idle problem

I had the same problem before. after using the scanner i got a code number P0507. "Idle Air Control", New 2002 and up Nissan models like my Altima don't have an idle valve or sensor like older models to be replace. Here's the solution " Replace your "Throttle Chamber" the idle sensor is build in it, there is no other way to fix this problem. the throttle chamber is about $175.00 at your Nissan Dealer. The need your core or you will need to pay extra money. No need for expensive mechanic shop, you could do this your self. the throttle chamber is so easy to remove, four screws holds it together. I will take you about ten to twenty minutes to replace it. Please trust me and you will save big bucks!!!!!

SOURCE: 2007 Nissan Sentra Problem

Possible ground issues. Any check engine light?

SOURCE: 94 Nissan Altima accelerator problems

check your throttle position sensor

Arnie Burke

• 7339 Answers
• Posted on Sep 19, 2009

SOURCE: 1990 Nissan 300zx w/ shifting issue

well Im sure theres a ton of miles on it-do u perform reg maint like checkin fluid level-u may need the throttle cable ajusted that hooks to trans-band n clutch could be out of measure too--trans hydra-valve system could be worn--see all these things effect the way the fluid makes the gears move--a pressure test can confirm an aging trans

SOURCE: RPMs going crazy, engine shutting off

Sounds like there may be a problem with the Idle air control motor (IAC).Have it checked out it may just need to be cleaned.At the worst replaced