Question: Under acceleration stuck at 5000 RPM

bobbycz · 02-06-2010, 10:31 AM

I took the car out for the first time in a while last night. Burnout - OK, Launch off trans brake @ 4400 OK, then seems to come up against the rev limiter and can not get it past 5000.
Back to the pits and standing still it flashes up to 7000 and shift light comes on at 6600. ????????????

Three hits with all the same results.

Details:
6 al MSD with two step 4400 and 7000 RPM chips.

Is it possibly not coming off the two step after Launch?

Thanks for any info you can provide.

John Mason · 02-06-2010, 11:10 AM

Pull all the chips, footbrake it and shift manually for 1 run.

Kegracing · 02-06-2010, 09:57 PM

One step further, take the 2 step loose. I have had bad chip do this, and also had a bad 2 step do this.
Unhook 2 step, footbrake and shift by hand. See what you get.
Good luck.
Ken

bobbycz · 02-06-2010, 11:45 PM

Thank you for the replys.

I have another two step and some other chips. So I will run the test next time out and replace items as required.

Adger Smith · 02-07-2010, 12:02 AM

Quote: "took the car out for the first time in a while "
Did it sit long enough for the valve springs to fade away?

bobbycz · 02-07-2010, 10:37 PM

Though it has not been to the track it has seen the street a fair amount. Though not really street friendly it manages to get me to a couple of cruises a month. So I would not think the springs are an issue but I will grab a set of gaskets and pull the covers to take a look and check them.

I still think it must be something to do with the MSD.

02-06-2010, 10:31 AM	#1
bobbycz Junior Member Join Date: Oct 2009 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Question: Under acceleration stuck at 5000 RPM I took the car out for the first time in a while last night. Burnout - OK, Launch off trans brake @ 4400 OK, then seems to come up against the rev limiter and can not get it past 5000. Back to the pits and standing still it flashes up to 7000 and shift light comes on at 6600. ???????????? Three hits with all the same results. Details: 6 al MSD with two step 4400 and 7000 RPM chips. Is it possibly not coming off the two step after Launch? Thanks for any info you can provide.

02-06-2010, 11:10 AM	#2
John Mason Member Join Date: Apr 2002 Posts: 147 Likes: 0 Liked 0 Times in 0 Posts	Re: Question: Under acceleration stuck at 5000 RPM Pull all the chips, footbrake it and shift manually for 1 run. __________________ John Mason 7743 SS

02-06-2010, 09:57 PM	#3
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: Question: Under acceleration stuck at 5000 RPM One step further, take the 2 step loose. I have had bad chip do this, and also had a bad 2 step do this. Unhook 2 step, footbrake and shift by hand. See what you get. Good luck. Ken

02-06-2010, 11:45 PM	#4
bobbycz Junior Member Join Date: Oct 2009 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: Question: Under acceleration stuck at 5000 RPM Thank you for the replys. I have another two step and some other chips. So I will run the test next time out and replace items as required.

02-07-2010, 12:02 AM	#5
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,367 Likes: 471 Liked 694 Times in 270 Posts	Re: Question: Under acceleration stuck at 5000 RPM Quote: "took the car out for the first time in a while " Did it sit long enough for the valve springs to fade away? __________________ Adger Smith (Former SS) Last edited by Adger Smith; 02-07-2010 at 12:02 AM. Reason: sp

02-07-2010, 10:37 PM	#6
bobbycz Junior Member Join Date: Oct 2009 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: Question: Under acceleration stuck at 5000 RPM Though it has not been to the track it has seen the street a fair amount. Though not really street friendly it manages to get me to a couple of cruises a month. So I would not think the springs are an issue but I will grab a set of gaskets and pull the covers to take a look and check them. I still think it must be something to do with the MSD.