Hesitation at 6.5 K in 3rd gear and 4th gear....

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Oct 20, 2002 | 10:29 PM

ejmack1

Thread Starter

Lawn Ornament

Joined: Apr 2001

Posts: 2,416

Likes: 2

From: St Louis, USA

Hesitation at 6.5 K in 3rd gear and 4th gear....

Kinda wondering what would cause this... its pretty damn annoying...

Oct 20, 2002 | 10:37 PM

rpm_pwr

Senior Member

Joined: Mar 2001

Posts: 348

Likes: 1

From: Brisvegas, Aust

You're not getting spark at high boost
boost cut?
plugs?
too rich?

-pete

Oct 20, 2002 | 10:40 PM

zooq

Senior Member

Joined: Nov 2001

Posts: 579

Likes: 0

From: Qatar

clean your spark plugs or change them, i get that problem every 1500-2000 miles and its because my car runs rich.

Oct 22, 2002 | 11:12 PM

r71

Senior Member

iTrader: (3)

Joined: Jun 2002

Posts: 655

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From: Atlanta

Ground it.

Someone said to ground the engine better. I did. My hesitation at 6-7k is gone. I bought 4 gauge ground wires from a stereo shop. The kind used to ground amps. It's cheap and easy to try first.

Oct 23, 2002 | 12:28 AM

MrKentChu

Junior Member

Joined: Oct 2002

Posts: 38

Likes: 0

From: San Leandro, CA

where did u put those 4 ground wires?

Oct 23, 2002 | 12:46 AM

nmo93

Full Member

Joined: Jan 2002

Posts: 246

Likes: 0

From: south jersey

if you search for "ground" you will find tons of info. here's just one link
https://www.rx7club.com/forum/showth...ghlight=ground
basically you can ground it to any part of the body.
nick

Oct 23, 2002 | 01:29 AM

redrotorR1

LS6 Convert

Joined: Jan 2002

Posts: 1,827

Likes: 0

From: Austin, TX

The grounding issue is one possible cause. Another one might be that you're overboosting and the ECU is sending down a fuel cut. The stock ECU doesn't respond well to over 11psi ... it's not programmed to handle it; so it just tells the fuel injectors to turn OFF. Check your boost gauge in the 6-7K rpm range ... and if you don't have a boost gauge; GET ONE. Or ... you could have a bad MAP sensor. A little more detail would help ...

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Oct 23, 2002 | 10:10 PM

209_rx7

Full Member

Joined: May 2002

Posts: 126

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From: Merced, CA

Plus and wires.

Oct 23, 2002 | 10:14 PM

ejmack1

Thread Starter

Lawn Ornament

Joined: Apr 2001

Posts: 2,416

Likes: 2

From: St Louis, USA

Quote:

Originally posted by redrotorR1
The grounding issue is one possible cause. Another one might be that you're overboosting and the ECU is sending down a fuel cut. The stock ECU doesn't respond well to over 11psi ... it's not programmed to handle it; so it just tells the fuel injectors to turn OFF. Check your boost gauge in the 6-7K rpm range ... and if you don't have a boost gauge; GET ONE. Or ... you could have a bad MAP sensor. A little more detail would help ...

I sure hope i have a boost gauge, im runnin 13 psi with an aftermarket ECU.... I still have the auto ecu computer hooked up though from my 5spd conversion... not sure whether that is having any effect on it....