Car Is Hesitating At 2100rpm

[lows_13]

When driving my skyline (R32 RB20DET Manual), as soon as i reached

the 2100rpm mark on acceleration, it sort of feels like its holding back but it jerks

forward like it doesn't know what it wants to do. When i put my foot down to

accelerate its ok, once past 2100rpm, not a problem.

[J_R32]

are you still running the standard fuel pump? if so sounds like it is on its way out. from what i can read i beleve u have a bit of fuel surge as the fuel pump can no longer pump fuel fast enough, giving u that hesitation.

[lows_13]

I've had this problem for a while now, the other day i changed from standard to an R32 GTR pump. Still have the same problem.

Edited August 20, 2006 by lows_13

[lows_13]

Will faulty coilpacks or ignition module cause this?

[GTR_Legend]

Will faulty coilpacks or ignition module cause this?

could, check ur plugs maybe check ur afm too

[lows_13]

Might be time for a plug change

[batesr33]

ive done plugs, last owner changed coil packs and now has the current 1s taped up and mine does the hesitating thing..... ive had it for 2 years, still does it, maybe the fuel pump..... but if it was on its way out, should of gone by now

[lows_13]

I've now got a GTR pump in mine and that hasn't fixed the problem.

[700HP-GTR33]

I've now got a GTR pump in mine and that hasn't fixed the problem.

This came up a few times , so do a search on what it could be.

I think AFM , Injectors followed by OXY Sensors was the discussion

on those topics.

[lows_13]

I think its either O2 sensor or injectors.

My injectors are ticking quite a bit on idle.

[assyrian4evaa]

try spark plug leads...

[700HP-GTR33]

try spark plug leads...

Are you running coils or leads?

What car we talking about here?

[DriftSquad]

sounds like an AFM problem! car sort of bunny hops like its got no fuel then goes again... clean your AFM with carby cleaner. if that dont work try the AFM soldering there a DIYS here some were. or buy another 1. i just brought a used 1 and fixed my problem.

hope this helps

[lows_13]

Its a R32 Skyline, RB20DET.

I did clean my AFM with carby cleaner and did the re-solder on it.

I think i might clean it out with the carby clearner again.

I'm running coilpacks, havn't got leads.

[700HP-GTR33]

Its a R32 Skyline, RB20DET.

I did clean my AFM with carby cleaner and did the re-solder on it.

I think i might clean it out with the carby clearner again.

I'm running coilpacks, havn't got leads.

Coil pack normally has troubles at high revs.Put injector cleaner into the fuel tank,

see if that might fix it.Changing the afm to find out it did not fix the problem would hurt your pocket.

Any one got a working AFM to lend to see if thats the problem?

Where abouts are you?

[lows_13]

I'm located in Adelaide, South Aus.

I cleaned out mine again just then, havn't taken it for a drive yet though.

Could it be a faulty ignitor pack?

[lows_13]

The problem gets far worse when i've got 3 or 4 people in the car.

Seems when its under load it aggrevates the problem