Car will not rev past 7K - Focaljet

**GOTBOOSTzx2** · 06-01-2008, 01:42 AM

So im totally confused as to what is happending, mabey you can help.

For some reason, the car @ WOT will not rev all the way out to 7500 rpms which is where I have MSD DIS II box set at.
Now this is what I have done so far, replaced plugs swaped back and forth couple times from AZFS-22C Motor crafts Now im with Denso Iridiums. Brand new coil pack.

Each time I try to rev out, itll rev limit, if you will, at eh 6800 rpms when I have MSD set at 7500.

Now, I did bypass MSD and it still will not alow the limiter I wish, My tuner has fuel cut @ 8K

**cjmartinyzx3** · 06-01-2008, 01:50 AM

sounds like the stock limiter is still in place... but with the ignition box you shouldnt be needing the stock computer..

is the coil pack hooked up to the factory harness or is it hooked to the box?

**GOTBOOSTzx2** · 06-01-2008, 02:07 AM

Well I should have provided more info, The car is fully built, 350 WHP turbo. My tuner set stock limiter or fuel cut to 8K.

I have MSD going into a harness I purchased so I wouldnt have to cut into the coil pack wires. Also note, I did bypass MSD and ran off just the stock coil pack.

**guitarseth** · 06-01-2008, 05:08 AM

Were you able to take it out past 7K prior to installing the MSD?

It sounds to me like its a computer issue still. I'd double check with the tuner and see what he did.

**recar** · 06-01-2008, 08:21 AM

My sct tuner had a tough time defeating my limiter also. I have one tune in my X-cal with No rev limit and one with the stock limit. I am unable to set the limiter with the X-cal 2 with either tune. I believe there is an electronic fuel pump cut-off in the computer that is the problem with mine

**GOTBOOSTzx2** · 06-01-2008, 09:09 PM

I def dont have any fuel issues...

**Omega Anomaly** · 06-01-2008, 09:45 PM

Are you free reving or driving ? Do you have a A/F gauge, if so what is it reading at 6800?

**Liquid_02_ZX3** · 06-03-2008, 02:57 PM

Those gerbils can only turn those wheels so fast!

**chewbacca** · 06-04-2008, 12:59 AM

yeah, is this in neutral or in gear that you are reving. there is a neutral rev limiter in the ecu that has to be adjusted also.

**blueovaldave** · 06-04-2008, 12:29 PM

Is it running out of air?

My setup on the stock MAF runs out of air at about 7100 RPMs and stumbles and misses just like a rev limiter would.

**OmniFocus** · 06-04-2008, 03:02 PM

Just have the tuner datalog the car. The source should be relatively obvious at that point.

**GOTBOOSTzx2** · 06-06-2008, 01:32 AM

hmm, I wonder if cam timing/cams come into play here...

I have
Stock zx2 exhaust cam
Crower .393 lift Focus cam
VCT deleted
retard exhaust cam gear 3*

**GOTBOOSTzx2** · 08-17-2008, 08:59 PM

imma read up more on the stock EDIS coil pack, but I may need to get an MSD

**Bparks717** · 08-21-2008, 01:49 AM

IACV stuck possibly?

**GOTBOOSTzx2** · 08-24-2008, 10:26 AM

no, I dont even have the IACV plugged in, the car ran better without it.

06-01-2008, 01:42 AM	#1
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Car will not rev past 7K So im totally confused as to what is happending, mabey you can help. For some reason, the car @ WOT will not rev all the way out to 7500 rpms which is where I have MSD DIS II box set at. Now this is what I have done so far, replaced plugs swaped back and forth couple times from AZFS-22C Motor crafts Now im with Denso Iridiums. Brand new coil pack. Each time I try to rev out, itll rev limit, if you will, at eh 6800 rpms when I have MSD set at 7500. Now, I did bypass MSD and it still will not alow the limiter I wish, My tuner has fuel cut @ 8K __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

06-01-2008, 01:50 AM	#2
cjmartinyzx3 NA Zetec Driver //// Where Bolt ons + Cams = 120whp Join Date: May 2005 Location: Marysville, MI Posts: 3,135	Re: Car will not rev past 7K sounds like the stock limiter is still in place... but with the ignition box you shouldnt be needing the stock computer.. is the coil pack hooked up to the factory harness or is it hooked to the box? __________________ Proud member of the 140k+ mile club 2001 zx3 crower stg3 cams/FC race header/2.5in exhaust/intake/tune/all poly mounts/H&R sport springs/KYB AGX dampers/SVT RSB/CM stg3 clutch/CM lightweight flywheel/Torsen T2 LSD/SVT front and rear bumper/SVT grill and headlights Waiting to build my SVT block for more powah!!

06-01-2008, 02:07 AM	#3
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Re: Car will not rev past 7K Well I should have provided more info, The car is fully built, 350 WHP turbo. My tuner set stock limiter or fuel cut to 8K. I have MSD going into a harness I purchased so I wouldnt have to cut into the coil pack wires. Also note, I did bypass MSD and ran off just the stock coil pack. __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

06-01-2008, 05:08 AM	#4
guitarseth Senior TEAM Member Join Date: Mar 2002 Location: Wooster, OH Posts: 3,017	Re: Car will not rev past 7K Were you able to take it out past 7K prior to installing the MSD? It sounds to me like its a computer issue still. I'd double check with the tuner and see what he did. __________________ French Blue 2003 ZX3 Power Premium MTX Mild Naturally Aspirated build - Modded for driving enjoyment My Car Please help me with my engine build, buy my engine parts.

06-01-2008, 08:21 AM	#5
recar Senior TEAM Member Join Date: Jan 2005 Location: New York Posts: 1,483	Re: Car will not rev past 7K My sct tuner had a tough time defeating my limiter also. I have one tune in my X-cal with No rev limit and one with the stock limit. I am unable to set the limiter with the X-cal 2 with either tune. I believe there is an electronic fuel pump cut-off in the computer that is the problem with mine

06-01-2008, 09:09 PM	#6
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Re: Car will not rev past 7K I def dont have any fuel issues... __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

06-01-2008, 09:45 PM	#7
Omega Anomaly TEAM Member Join Date: May 2008 Location: Flint, MI Posts: 512	Re: Car will not rev past 7K Are you free reving or driving ? Do you have a A/F gauge, if so what is it reading at 6800? __________________ Later -Bryan "How can we set up a democratic government in a country, when we are a republic. It is like saying 'This is how you do it, but don't look at my example because it is wrong' ."

06-03-2008, 02:57 PM	#8
Liquid_02_ZX3 TEAM Member Join Date: Apr 2007 Location: Fort Wayne, IN Posts: 944	Re: Car will not rev past 7K Those gerbils can only turn those wheels so fast! __________________ '02 Liquid ZX3 Power Premium MTX Ported & polished head 10.5 to 1 CR, Comp Stage II w/ adj gears, Ported contour IM w/TB, 4-1 header, 2 1/2" flex back, custom CAI, AFX udp, A/C delete, Sniper 93 octane tune, B&M sts, 225/50/16's w/ custom Eibachs on AGX's and some other stuff.

06-04-2008, 12:59 AM	#9
chewbacca mani i love dongs Join Date: Apr 2004 Location: Tempe AZ, Spring Creek NV Posts: 6,907	Re: Car will not rev past 7K yeah, is this in neutral or in gear that you are reving. there is a neutral rev limiter in the ecu that has to be adjusted also. __________________ 2001 ZX3 FS/VF Supercharged (been so long i can't remember the power figures...) SV1000S-HOLY BALLS I'M FAST NOW! 1948 Willys CJ-2A - God i wish i could sell this thing!! JCM Racing #666- The Millenium Falcon

06-04-2008, 12:29 PM	#10
blueovaldave Senior TEAM Member Join Date: Dec 2002 Location: Fredrick, Md Posts: 2,818	Re: Car will not rev past 7K Is it running out of air? My setup on the stock MAF runs out of air at about 7100 RPMs and stumbles and misses just like a rev limiter would. __________________ 2001 S2 Liquid Grey, PWSC 243 hp, 190 lb/tq SPONSORS WANTED "I may not have won alot of races, but I never lost a party."Ken Schrader

06-04-2008, 03:02 PM	#11
OmniFocus Moderator Join Date: Jul 2001 Location: Mowin' down the cones. (CA) Posts: 26,271	Re: Car will not rev past 7K Just have the tuner datalog the car. The source should be relatively obvious at that point. __________________ Check out the shiny new PirateNinjasWithLasers.com for the latest updates in 24 Hours of LeMons goodness. Vacuum Vulture Racing: We put the "rad" in scrub radius, and the "ack" in ackerman.

06-06-2008, 01:32 AM	#12
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Re: Car will not rev past 7K hmm, I wonder if cam timing/cams come into play here... I have Stock zx2 exhaust cam Crower .393 lift Focus cam VCT deleted retard exhaust cam gear 3* __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

08-17-2008, 08:59 PM	#13
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Re: Car will not rev past 7K imma read up more on the stock EDIS coil pack, but I may need to get an MSD __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

08-21-2008, 01:49 AM	#14
Bparks717 TEAM Member Join Date: Jul 2007 Location: Florida, Palm Coast Posts: 391	Re: Car will not rev past 7K IACV stuck possibly? __________________ 80 Firebird=sold (sadly) 89 240sx= project 02 focus zts= automatic (TRADED IN THANK GOODNESS) 00 Focus ZX3= euro sex beast in production I live to praise my lord father Christ

08-24-2008, 10:26 AM	#15
GOTBOOSTzx2 TEAM Member Join Date: Mar 2005 Location: Florida Posts: 265	Re: Car will not rev past 7K no, I dont even have the IACV plugged in, the car ran better without it. __________________ 352 WHP 307 WTQ Escort ZX2 Turbo Boost

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