05-02-2008, 09:01 AM
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#1 |
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Registered User
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Misfire on 97 GT
I just bought a 97 GT that had been sitting for about a year. The gas was pretty old. I am getting a code saying misfire on Cyl #4. I can not reed the accual code on my reader but I can read it saying misfire on cyl #4. I have changed the wires and plugs and are still getting the message. My next plan is to change the coil packs, but if that does not work what could be the problem.
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White 97 GT Vert |
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05-02-2008, 10:54 PM
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#2 |
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Three-hundredths of a second away from it!!!!
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If the plug and wires have been changed id do the coil packs.
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2002 Mustang GT-K&N FIPK, Accufab Plenum/ 75mm T-body, Diablosport Predator, 4.10s, Pro 5.0 shifter, Bassani O/r x-pipe, Magnaflow Magnapacks, Steeda pulleys, Mickey Thompson ET streets, Moser axles, Eibach Sportlines, Hotchkis U/Lca's, 180* t-stat_ best e.t 13.02@103!!!! 
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05-02-2008, 11:23 PM
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#4 | ||
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I eated it..
 
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Check the intake, I bet the heater outlet to the core may be cracked and leaking a bit of coolant in the #4 hole...
Mine did it constantly, plus the stock NPI intake sucks, (even after the recall) and the cooling system for 96-97 was not the best, temps higher then normal caused havoc on those years. Easy way to tell, when it does misfire, pull the #4 wire and see if there is any moisture in the bore and wire end. Make sure the plug does not have any cracks either, (new or not, it happens).
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Built 00 Windsor engine, .20 over, 11.6:1cr, fully ported heads, Hardballer intake w/cooling mod, Scat rods, Probe pistons, Cobra crank, tri-metal Clevite race bearings, VT Stage 2 N/A cams, adjustable cam gears, Canton windage tray, MMR oil pump, Cobra pick up, 75MM Accufab t-body, Dragon plenum, JLT CAI, 24# injectors, Bassani mid lengths, mufflers & O/R X,255lph fuel pump, BBK FPR, Fidanza aluminum flywheel, AJE K-member, ARP hardware everywhere, X-Cal SCT custom tuned, 3.73's, Pro 5.0, polygraphite motor mounts. |
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05-03-2008, 01:14 AM
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#5 |
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oLD sCHooL fOOL
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96greengt is right - check out the heater core tubing - my previous non-pi 97 had a minor leak issue from the tube - luckily I caught it before excessive coolant leaked into plug bores. If I'm not mistaken the coil packs are not side specific - so try swapping coil packs to see if misfire clears or follows coil pack
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March under-drive pulleys, RAM H/D clutch, TriAx, Pro5.0 handle, BBK plenum, 75mm PP t/body, C&L True Flow polished pipe, SVT focus fuel pump, MAC O/R H, 2 chambered Flows, Ford Racing gears 4.10's, Eibach Pro Kit, energy suspension spring isolators, NT555 285/40/18s (rear), 18x9 18x10s chrome Saleens, and a shit load of interior,exterior cosmetic upgrades... 
Last edited by seco; 05-03-2008 at 01:18 AM. |
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