Car breaking up at high rpm's
#1
Burning Brakes
Thread Starter
Car breaking up at high rpm's
My car is breaking up at high rpm's in fourth like at 110-120 mph. What could it be and where do I start? Its supercharged with meth. Could it be belt slippage, clutch slipping or is it fuel or spark related? Thanks....
#3
Burning Brakes
Thread Starter
#6
Burning Brakes
Thread Starter
Doug, I have your meth system and at times the red or green light didn't come on but when I pull over and push the test button it turns red then green and car bogs down. Is there a chance its the meth system?
#7
Premium Supporting Vendor
Member Since: Oct 2004
Location: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Posts: 23,313
Received 1,084 Likes
on
656 Posts
Sure, anything is possible. The vacuum/boost line to the alky MAP sensor might have a break in it which would cause the situation you just described.
#8
Intermediate
Member Since: Apr 2011
Location: Ewa Beach Hawaii
Posts: 48
Likes: 0
Received 0 Likes
on
0 Posts
Had the same problem. Pulled the MSD wires off and 6 of the wires had boots that were flaking apart. Installed new plugs and wires and she never had the hesitation (misfire) again. It would start around 4500 rpm and go to decline.
Ryan
Ryan
#9
Le Mans Master
Deff seems something either tune/spark/ meth related. Do you have a wideband in the car? If so whats it reading? You arent too far from us. If you wanna stop by one day and have us look feel free. It will probably be fairly easy to figure out.
#10
Burning Brakes
Thread Starter
#11
Burning Brakes
Thread Starter
#12
Moderator/Tech Contributor
Member Since: Jun 2001
Location: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
Posts: 18,198
Received 3,813 Likes
on
2,060 Posts
2015 C7 of the Year Finalist
#15
Burning Brakes
Thread Starter
I changed the plugs, I believe its the meth. When I hit the test button the system works lights go from red to green car bogs down. When I drove it the lights wouldn't come on, so I pulled over hit test button and worked fine. Drove it again it worked but would come on at 3000rpm's then other times not till 4000rpm's. My question is what activates the system when driving the car?
#16
Premium Supporting Vendor
Member Since: Oct 2004
Location: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Posts: 23,313
Received 1,084 Likes
on
656 Posts
MAP sensor for your alky system is in the drivers side kick panel if we installed it, but I thought you did your own install? Either way, the MAP sensor on the intake will not help you.
If you have time to stop in we can check it out for you in minutes.
If you have time to stop in we can check it out for you in minutes.
#17
Burning Brakes
Thread Starter
No, you installed and tuned it for me. Could you sell me a new map sensor?
#18
Burning Brakes
Thread Starter
I wish you were close enough that I could do that.
Last edited by 07blkvette; 05-02-2012 at 06:11 PM.