Just Put In New Fuel Injectors,, Starts But Idels HIGH!
Just Put In New Fuel Injectors,, Starts But Idels HIGH!
Hi I was Wondering If someone can help me.. I have a 1993 Q45. I Just Finished Puting In 8 Fuel Injectors. I was Careful to reconnect all hoses and lines. She Starts right up! BUT she Idels At 2000 Rpms, And wont go down! What could be my problem? By the way, i cleand the plenum, and maf.
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WI_S14_Goldie
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maxnix
- Posts: 22627
- Joined: Mon Jul 22, 2002 8:11 pm
- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: Just Put In New Fuel Injectors,, Starts But Idels HIGH! (WI_S14_Goldie)
Is not that. More like a too lean condition from a disconnected or carcked hose. How about IAC and EGR valves?WI_S14_Goldie wrote:running Rich...
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Q45tech
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- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Re: Just Put In New Fuel Injectors,, Starts But Idels HIGH! (maxnix)
The ecu TRIES to limit idle rpm by limiting the air into engine, as the air flow increases the ecu assumes you are intentionally cracking the throttle open or have intentionally misadjusted the IAC bypass or throttle..........it can only react to what's happening.
REMEMBER WHEN THE COOLANT IS COLD NOT 174F the fast idle thermo enhanced cam comes into play to warm up fast usually 1400 rpms see graph in FSM vs coolant temp flowing thru TB.
The MAF is not very accurate at low flows so in a wide range the ecu just supplies fuel vs rpm...........enough air to run 2000 the ecu supplies enough fuel to maintain some decent AF ratio.......after all it's main job is to minimize emissions by maintaining 14.7AF however it can.
REMEMBER WHEN THE COOLANT IS COLD NOT 174F the fast idle thermo enhanced cam comes into play to warm up fast usually 1400 rpms see graph in FSM vs coolant temp flowing thru TB.
The MAF is not very accurate at low flows so in a wide range the ecu just supplies fuel vs rpm...........enough air to run 2000 the ecu supplies enough fuel to maintain some decent AF ratio.......after all it's main job is to minimize emissions by maintaining 14.7AF however it can.
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maxnix
- Posts: 22627
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- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: (CroQ45)
Cabernet or Chardonnay?CroQ45 wrote:I Just Took It For a ride,, and there is a wineing sound goming from somewhere! Plus She does not have full power!
Better check the dilithium crystals!
Any news on the idler pulleys? IAC valve setting?