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<blockquote data-quote="Tickle" data-source="post: 14838642" data-attributes="member: 146538"><p>My 1996 Cobra has 91k miles. On the way home, it started sputtering/hesitating during acceleration, mainly in gears 2-5. I also noticed the voltage meter on the car a little to the left(R in NORMAL), but it went back up and stayed.</p><p></p><p>I made it home and did a basic check. It revs fine when stopped, idles fine, doesn't try to stall.</p><p></p><p>My plugs and wires are 2years/20k old.</p><p>2k on new O2 sensors.</p><p>IMRCS were deleted last year and I have a tune for it. </p><p>Fuel filter is 2-3k miles old. </p><p>No DTCs are showing.</p><p></p><p>Updated:</p><p>Things I have checked:</p><p>-fuel pressure is 29-30 psi at idle, goes up to 39 when I disconnet vacuum from FPR. This eliminates fuel pump IMO.</p><p>-I used a mechanics stethoscope and checked each injector, they all were ticking steadily and sounded the same.</p><p>-Battery is at 12.6V off, 14.1V at idle</p><p>-Both ignition coils read primary resistance 1 ohm, secondary of 13-14.5 K-ohms on all pairs </p><p>-All spark plug cylinders/tunnels were clean and clear of oil, no leaks in grommets for valve covers</p><p>-all spark plugs were normal and gapped correctly. </p><p></p><p>5/11/15-next thing to try: replacing spark plug wires, maf cleaning, then datalog, then mechanic after that--my local dealership is awesome and priced reasonably thank goodness. I'm stumped but I'm also just a shade tree mechanic. This may be a job for the pros because I'm out of ideas.</p><p></p><p>5/13/15: problem solved. It was the wires. Only 20k miles on FRPP 9mm wires. Twice now i have been fooled to think it wasn't wires.</p></blockquote><p></p>
[QUOTE="Tickle, post: 14838642, member: 146538"] My 1996 Cobra has 91k miles. On the way home, it started sputtering/hesitating during acceleration, mainly in gears 2-5. I also noticed the voltage meter on the car a little to the left(R in NORMAL), but it went back up and stayed. I made it home and did a basic check. It revs fine when stopped, idles fine, doesn't try to stall. My plugs and wires are 2years/20k old. 2k on new O2 sensors. IMRCS were deleted last year and I have a tune for it. Fuel filter is 2-3k miles old. No DTCs are showing. Updated: Things I have checked: -fuel pressure is 29-30 psi at idle, goes up to 39 when I disconnet vacuum from FPR. This eliminates fuel pump IMO. -I used a mechanics stethoscope and checked each injector, they all were ticking steadily and sounded the same. -Battery is at 12.6V off, 14.1V at idle -Both ignition coils read primary resistance 1 ohm, secondary of 13-14.5 K-ohms on all pairs -All spark plug cylinders/tunnels were clean and clear of oil, no leaks in grommets for valve covers -all spark plugs were normal and gapped correctly. 5/11/15-next thing to try: replacing spark plug wires, maf cleaning, then datalog, then mechanic after that--my local dealership is awesome and priced reasonably thank goodness. I'm stumped but I'm also just a shade tree mechanic. This may be a job for the pros because I'm out of ideas. 5/13/15: problem solved. It was the wires. Only 20k miles on FRPP 9mm wires. Twice now i have been fooled to think it wasn't wires. [/QUOTE]
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