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View Full Version : Car is breaking up at high RPM


93zm6tally
06-25-2003, 10:21 AM
You might have noticed when I left last night. It's fine until about 5800, probably the coil which is one that I put back on after replacing it for this very reason, (the new AutoZone Coil worked well but the bracket was broke). Anyways ordered a new Crane Coil last night.
Jeffro
06-25-2003, 10:27 AM
how new are your plugs and wires?
just go through and make sure they all have a good connection.
that coil might help.
brandboZ28
06-25-2003, 10:29 AM
Ya, Its probably the coil. I am running a $13 stock replacement coil and it works fine but that Crane will probably spark hotter. Also, you might wanna check your coil wire and make sure it is connected all the way or isnt arching. Good luck with it man.
93zm6tally
06-25-2003, 10:31 AM
Originally posted by "Jeffro"

how new are your plugs and wires?
just go through and make sure they all have a good connection.
that coil might help.

Plugs and wires are all brand new, AC Delco Plats and Taylor OVC's with heat shields. If any of those bitches are burned I'm gonna be pissed.
brandboZ28
06-25-2003, 10:32 AM
Originally posted by "93zm6tally"


how new are your plugs and wires?
just go through and make sure they all have a good connection.
that coil might help.

Plugs and wires are all brand new, AC Delco Plats and Taylor OVC's with heat shields. If any of those bitches are burned I'm gonna be pissed.

Ya, I dont think there is any way that those wires could get burnt. I think Im gonna oreder me some this week. :twisted:
Slow ET
06-25-2003, 10:33 AM
Yeah, breaking up at the top usually means, there is a lack of spark or fuel. How many miles you have on your fuel filter?
93zm6tally
06-25-2003, 10:44 AM
Originally posted by "SOM Pig"

Yeah, breaking up at the top usually means, there is a lack of spark or fuel. How many miles you have on your fuel filter?

Also brand new.
Slow ET
06-25-2003, 10:51 AM
Does that year have a MAF?
brandboZ28
06-25-2003, 01:18 PM
Nope, Speed Density Rules Baby!!!
redmach1
06-25-2003, 05:56 PM
How old is your fuel pump? If its old, it might be able to maintain pressure at lower engine speeds but not up top. It's ability to flow enough volume at those engine speeds may not be up to snuff. Don't rule out a set of plug wires, either. I have seen some damn expensive ones cop out when they weren't supposed to, and some cheap-ass wires rev to 8000rpm.