breaking up at 3k

saywhat? · January 19th, 2012, 07:41 PM

my 96 gt pi started running like crap yesterday. everything was fine and now
it seems to either lose spark or fuel and kinda sounds like a two steep at 3k rpm. I'm not sure what it could be because as soon as it gets past 3k it stops and will run fine again . i have changed the plugs and cleaned the maf and it is still doing the same thing. any advice would be grate .

drakkhen20 · January 19th, 2012, 07:59 PM

check your coils, fuel filter, and change your plug wires. check your gap also. thats some ideas for ya to check.

saywhat? · January 20th, 2012, 08:55 AM

thanks . changing the plug wires and the full filter is easy but how do you check a coil to make sure it is OK ? plug gap is OK checked that last night . i also replaced the maf last night and it seems to be running a little better . at least it did this morning wile taking the kids to school .

G.T. Rags · January 20th, 2012, 10:57 AM

check to see if your intake manifold is cracked....

my old 96 used to do that when it was cracked in the front and back of the intake....

Ruffellbaker · January 21st, 2012, 09:23 PM

Sounds like TPS to me. When a TPS sensor gets worn out it will normally malfunction at a certain rpm range that it sees alot. So it will work at all rpms until it gets to the bad range and then straighten out after that range has passed. Only way to be sure is to either use a meter with an oscilloscope on ur tps sensor or use a scan tool to graph it while driving. Very common problem.

saywhat? · January 29th, 2012, 06:48 PM

thanks for all the help everyone . i found the problem to be bad plug wires so i replaced them and the problem is gone .

January 19th, 2012, 07:41 PM	#1
saywhat? Newbie 1996 mustang gt n/a Join Date: Jul 2011 Location: Saint Simmons Island Georgia Posts: 10 iTrader: 0 reviews	breaking up at 3k my 96 gt pi started running like crap yesterday. everything was fine and now it seems to either lose spark or fuel and kinda sounds like a two steep at 3k rpm. I'm not sure what it could be because as soon as it gets past 3k it stops and will run fine again . i have changed the plugs and cleaned the maf and it is still doing the same thing. any advice would be grate .

January 19th, 2012, 07:59 PM	#2
drakkhen20 Regular 1998 Mustang GT Convert. Join Date: Oct 2011 Location: Mississippi Posts: 293 iTrader: 0 reviews	check your coils, fuel filter, and change your plug wires. check your gap also. thats some ideas for ya to check. __________________ 98 Mustang GT Convert. 95 Mustang GT 5.0L

January 21st, 2012, 09:23 PM	#5
Ruffellbaker Regular 1997 Mustang GT Join Date: May 2010 Location: Hagerstown, MD Posts: 264 iTrader: 0 reviews	Sounds like TPS to me. When a TPS sensor gets worn out it will normally malfunction at a certain rpm range that it sees alot. So it will work at all rpms until it gets to the bad range and then straighten out after that range has passed. Only way to be sure is to either use a meter with an oscilloscope on ur tps sensor or use a scan tool to graph it while driving. Very common problem. __________________ PI Cam Swap, MAC C/A intake, BBK 70mm TB, C&L Plenum, Ford 24lb injectors, March UD, 160 T Stat, MSD ignition, 3.73 gears, Stage 2 Clutch, Steeda Short Shifter, O/R X, Flow 40s, SCT Race Tune.

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January 20th, 2012, 08:55 AM	#3
saywhat? Newbie 1996 mustang gt n/a Join Date: Jul 2011 Location: Saint Simmons Island Georgia Posts: 10 iTrader: 0 reviews	thanks . changing the plug wires and the full filter is easy but how do you check a coil to make sure it is OK ? plug gap is OK checked that last night . i also replaced the maf last night and it seems to be running a little better . at least it did this morning wile taking the kids to school .

January 29th, 2012, 06:48 PM	#6
saywhat? Newbie 1996 mustang gt n/a Join Date: Jul 2011 Location: Saint Simmons Island Georgia Posts: 10 iTrader: 0 reviews	thanks for all the help everyone . i found the problem to be bad plug wires so i replaced them and the problem is gone .

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