Hesitation when fans are on - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

corey240 · 10-07-2008, 04:11 PM

I have this bad hesitation, like the motor doesnt want to go, like somthing is holding it back, until 2400 rpm. Ive checked everything and ecu throws no codes. Now on the way to work my fans shut off. This happewns ometimes because the realy is going bad so I have to pound it and it kicks over.

I noticed the car was running really smooth, and felt a bit faster, ands it pulled harder. So when I kicked the fans over, it hestated again. Then, on the way home, they shut off again. I thought man its running good now wtf. And noticed the temp was creeping up, so I turned them on again, thus producing crap. How would the fans affect my motor so harshly? It has to have somthing to do with it, I just cant figure out how.

YucA · 10-07-2008, 04:36 PM

grounding issue? The fans suck a shitload of amperage...

If you have a problem with the relay, i wouldnt be surprised if thats part of the problem...

Bigsyke · 10-07-2008, 05:23 PM

alternator mine does the same thing

Addicted2Kouki · 10-07-2008, 05:25 PM

What fans are you using?

WISH ONE · 10-07-2008, 05:26 PM

alt, wiring, battery, poor grounds.

Bigsyke · 10-07-2008, 06:46 PM

I think altima fans just do that.

spirit · 10-07-2008, 07:04 PM

I run altima fans on stock sr alternator. I don't have that problem, but I also run a red top optima battery & upgraded wiring. Tho I also have over 2000watts of audio shit too.

Bigsyke · 10-07-2008, 07:21 PM

upgraded wiring in what reguards?

corey240 · 10-07-2008, 07:44 PM

I have dual flexalites. I also have a ka alternator that i put on like 2 years ago, off a 95-96 ka, so I didnt think it would be that. Although, I wondered that today once the fan thing cought my attention. I am going to go over my wiring, and get my alt tested tomorow. Thos are simple things to check. Any ideas are appreciated, this problem scares me it may turn worse if its not fixed.

spirit · 10-07-2008, 07:45 PM

Battery in the trunk.
0 gauge from trunk to front, where all the stock & modified stuff connects to. Used a home depot home wiring block to wire everything up. Kinda ghetto, but real easy to make changes.
0 gauge ground in the trunk area.

apex · 10-07-2008, 08:37 PM

mine does the same thing also when getting sideways the rpms will jump
like if im drifting around sumthing and keep gettin on an off the gas
the rpms go crazy like from 6 it will go up to 9 i know im not reving that
high i can hear the motor but idk car runs good tho sohc with dual
felx a lite 220 fans

i think it might be the grounds gotta clean them

ROIDMONKEY · 10-07-2008, 08:50 PM

had a similar problem on my SR running the dual flex alite . i upgraded the battery and problem gone . braille 3121 that thing is powerfull ..

10-07-2008, 04:11 PM	#1
corey240 Zilvia Junkie Join Date: Dec 2005 Location: Cumberland, Maryland Age: 36 Posts: 508 Trader Rating: (2) Feedback Score: 2 reviews	Hesitation when fans are on I have this bad hesitation, like the motor doesnt want to go, like somthing is holding it back, until 2400 rpm. Ive checked everything and ecu throws no codes. Now on the way to work my fans shut off. This happewns ometimes because the realy is going bad so I have to pound it and it kicks over. I noticed the car was running really smooth, and felt a bit faster, ands it pulled harder. So when I kicked the fans over, it hestated again. Then, on the way home, they shut off again. I thought man its running good now wtf. And noticed the temp was creeping up, so I turned them on again, thus producing crap. How would the fans affect my motor so harshly? It has to have somthing to do with it, I just cant figure out how. __________________ Email: [email protected]

10-07-2008, 05:26 PM	#5
WISH ONE Post Whore! Join Date: Aug 2006 Location: orange county ca Posts: 2,738 Trader Rating: (13) Feedback Score: 13 reviews	alt, wiring, battery, poor grounds. __________________ PARTING/SELLING MY COUPE. PM ME.

10-07-2008, 07:04 PM	#7
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	I run altima fans on stock sr alternator. I don't have that problem, but I also run a red top optima battery & upgraded wiring. Tho I also have over 2000watts of audio shit too. __________________

10-07-2008, 07:44 PM	#9
corey240 Zilvia Junkie Join Date: Dec 2005 Location: Cumberland, Maryland Age: 36 Posts: 508 Trader Rating: (2) Feedback Score: 2 reviews	I have dual flexalites. I also have a ka alternator that i put on like 2 years ago, off a 95-96 ka, so I didnt think it would be that. Although, I wondered that today once the fan thing cought my attention. I am going to go over my wiring, and get my alt tested tomorow. Thos are simple things to check. Any ideas are appreciated, this problem scares me it may turn worse if its not fixed. __________________ Email: [email protected]

10-07-2008, 07:45 PM	#10
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	Battery in the trunk. 0 gauge from trunk to front, where all the stock & modified stuff connects to. Used a home depot home wiring block to wire everything up. Kinda ghetto, but real easy to make changes. 0 gauge ground in the trunk area. __________________

10-07-2008, 04:36 PM	#2
YucA Leaky Injector Join Date: Sep 2004 Location: Miami Age: 43 Posts: 142 Trader Rating: (0) Feedback Score: 0 reviews	grounding issue? The fans suck a shitload of amperage... If you have a problem with the relay, i wouldnt be surprised if thats part of the problem...

10-07-2008, 05:23 PM	#3
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	alternator mine does the same thing

10-07-2008, 06:46 PM	#6
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	I think altima fans just do that.

10-07-2008, 07:21 PM	#8
Bigsyke Zilvia FREAK! Join Date: Jun 2008 Location: NA Age: 40 Posts: 1,342 Trader Rating: (0) Feedback Score: 0 reviews	upgraded wiring in what reguards?

10-07-2008, 08:37 PM	#11
apex Zilvia FREAK! Join Date: Aug 2004 Location: palm springs Posts: 1,569 Trader Rating: (44) Feedback Score: 44 reviews	mine does the same thing also when getting sideways the rpms will jump like if im drifting around sumthing and keep gettin on an off the gas the rpms go crazy like from 6 it will go up to 9 i know im not reving that high i can hear the motor but idk car runs good tho sohc with dual felx a lite 220 fans i think it might be the grounds gotta clean them __________________ Red Rocket

10-07-2008, 08:50 PM	#12
ROIDMONKEY Nissanaholic! Join Date: Jul 2007 Location: HollyFLORIDA Posts: 2,027 Trader Rating: (4) Rides Gallery: ROIDMONKEY Feedback Score: 4 reviews	had a similar problem on my SR running the dual flex alite . i upgraded the battery and problem gone . braille 3121 that thing is powerfull .. __________________ TRUE thing: True ////OFFSET\\\\ is acheived without spacers Running on E85 570whp Precision 5862....laggy as fuck. hate it