engine misses and cuts out at high rpms

j's69stang · 05-23-2001, 12:16 AM

my engine misses and cuts out at high rpms when i run through the gears. im thinking it might be the spark plug wires and distributor cap since there about 5 years old. i have the pertronics electronic ingition and i dont think that is it, any other idea?

Rev · 05-23-2001, 12:20 AM

If the cap and wires are 5 years old, then definitely start there. How old are the plugs? Suprises me that anyone would let any ignition parts go 5 years.

Rev

------------------
'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.

j's69stang · 05-23-2001, 11:09 AM

The plugs are brand new, but i havent had the time or money for the plug wires, i bought a distributer cap last year and it didnt fit right so i took it back, but i got a new distributer so i might and get a new one and hopefully it will fit right.

David Fulford · 05-23-2001, 02:07 PM

Could be a number of things. If it runs fine at low RPMs I would think it could be something possibly with advance/distributor or even a fuel problem. I had a problem like that on a truck I had and it ended up being the carb. Good Luck

Power · 05-23-2001, 04:26 PM

I have had two problems with my car idling fine but cutting out at higher rpms. One was the fuel pump going bad and the other was a wire at the Starter Cellunoid(sp?) wasnt tightened down correctly and was arcing at the higher rpms. I know thats pretty weird but I couldnt't figure it out until it got dark because I never thought to check there. I had another problem with pitted contacts inside the dist. cap but if you have electronic ignition you should be ok there.

j's69stang · 05-23-2001, 10:58 PM

i dont think its the carb b/c i just put my cousins holley on there and it does the same as my edelbrock does.

crewzin · 05-24-2001, 10:16 PM

I had a similar problem once and it was a faulty coil. I think it was the secondary windings.

Gearhead999 · 05-27-2001, 03:57 PM

Go get a set of wires, cap and rotor. Sure sounds like a secondary break down. And if they're 5 years old they need to be replaced.

05-23-2001, 12:16 AM	#1
j's69stang Registered Member Join Date: Apr 2000 Posts: 102	engine misses and cuts out at high rpms my engine misses and cuts out at high rpms when i run through the gears. im thinking it might be the spark plug wires and distributor cap since there about 5 years old. i have the pertronics electronic ingition and i dont think that is it, any other idea?

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05-23-2001, 12:20 AM	#2
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	If the cap and wires are 5 years old, then definitely start there. How old are the plugs? Suprises me that anyone would let any ignition parts go 5 years. Rev ------------------ '66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph 1/4 mi.

05-23-2001, 11:09 AM	#3
j's69stang Registered Member Join Date: Apr 2000 Posts: 102	The plugs are brand new, but i havent had the time or money for the plug wires, i bought a distributer cap last year and it didnt fit right so i took it back, but i got a new distributer so i might and get a new one and hopefully it will fit right.

05-23-2001, 02:07 PM	#4
David Fulford Registered Member Join Date: Oct 2000 Location: Charlotte NC Posts: 193	Could be a number of things. If it runs fine at low RPMs I would think it could be something possibly with advance/distributor or even a fuel problem. I had a problem like that on a truck I had and it ended up being the carb. Good Luck

05-23-2001, 04:26 PM	#5
Power Registered Member Join Date: Feb 2001 Location: Oregon Posts: 420	I have had two problems with my car idling fine but cutting out at higher rpms. One was the fuel pump going bad and the other was a wire at the Starter Cellunoid(sp?) wasnt tightened down correctly and was arcing at the higher rpms. I know thats pretty weird but I couldnt't figure it out until it got dark because I never thought to check there. I had another problem with pitted contacts inside the dist. cap but if you have electronic ignition you should be ok there.

05-23-2001, 10:58 PM	#6
j's69stang Registered Member Join Date: Apr 2000 Posts: 102	i dont think its the carb b/c i just put my cousins holley on there and it does the same as my edelbrock does.

05-24-2001, 10:16 PM	#7
crewzin Registered Member Join Date: May 2001 Location: Sour Lake, TX Posts: 211	I had a similar problem once and it was a faulty coil. I think it was the secondary windings.

05-27-2001, 03:57 PM	#8
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Go get a set of wires, cap and rotor. Sure sounds like a secondary break down. And if they're 5 years old they need to be replaced.