Ignition and idling problems.... June 24, 2015, 07:58:01 PM Lately my 88 sport has been stalling out and even not restarting though the engine does turn over. It's also been idling roughly and misfiring a lot which causes a "sluggish" feeling when accelerating. All symptoms seem to be pointing to a bad TFI module which I was told can act up from overheating, but I don't wanna spend the $$'s on a Motorcraft part if that's not the cause. All plugs and wires are new, as well as the distributor cap and rotor. Any tips or info would be greatly appreciated....Thanks! Quote Selected
Ignition and idling problems.... Reply #1 – June 24, 2015, 09:45:19 PM spark needs to be bluish whitefuel pres sitting still needs to be about 40psi,, and while driving , gauge taped to windshield in no even should the needle be lower than 20psi during high rpms between gearspull codes with a paper clip ,, scroll to my diy link for that info belowif the stator inside the dizzy is bad, there will be no codes to point to it,,if spark is weak orange looking, change the stator.. rather tricky job but you sound like you know your way around cars.hint- dizzy gear only goes on one way because the roll pin hole Is drill off center. Quote Selected
Ignition and idling problems.... Reply #2 – June 24, 2015, 09:46:30 PM once you fix it,, pop the upper intake off and then fuel rail, then injectors and toss those screens in the top of the injectors.if you don't like the idea then spend better money on the fuel filter , either way those tiny screens collapse and restrict fuel flow generally speaking.next, do a TFI relocation mod, in my diy link as well. Quote Selected
Ignition and idling problems.... Reply #3 – June 24, 2015, 11:27:55 PM Run the efi no start trouble shooting steps. An intermittent spark issue is generally the pip or tfi module or both. They should be replaced in pairs. In 10 years of driving these cars, I've never had a tfi module fail on me. Quote Selected
Ignition and idling problems.... Reply #4 – June 25, 2015, 01:44:38 AM I got a TFI module NOS on Ebay for $36...hopefully that will fix the problem. Quote Selected
Ignition and idling problems.... Reply #5 – June 25, 2015, 07:02:26 PM If you trouble shot the problem some, you would know before you ordered the part. http://sbftech.com/index.php?topic=588.0 Quote Selected
Ignition and idling problems.... Reply #6 – June 26, 2015, 08:51:52 AM Quote from: Haystack;449187Run the efi no start trouble shooting steps. An intermittent spark issue is generally the pip or tfi module or both. They should be replaced in pairs. In 10 years of driving these cars, I've never had a tfi module fail on me.Knock on wood but I've never had one fail either. My 88 still has the original factory pieces. Quote Selected
Ignition and idling problems.... Reply #8 – June 26, 2015, 11:07:18 AM I bought a Mustang 2.3 car....the timing belt was said to have went, so the previous owner(s) had a new belt put on. Apparently they hired a wannabe mechanic to fix it, as the dam thing still wasn't in time. I managed to get it close enough to be able to run, then moved on to why it wouldn't fire. Put a TFI from a known good distributor in and it ran well enough to drive it around, though the timing needed a more experienced hand than mine, as I've never jacked with a 2,3 before other than plugs and routine stuff.Had to put a TFI on my '92 5.0 truck in 2004, as well. It's common. Heat kills 'em faster than anything else, and I noticed too that I had a bad plug wire issue right before the TFI went out on the truck. Popped the hood one night to jump someone with a dead battery, saw a lightning storm as soon as I raised my hood. Holy shiznit...yeah, next day I put in new plugs, wires, rotor, and unrelated, a heater hose that had a pinhole, seems just a few days later the truck died and wouldn't run. Ran some codes, nothing. Asked a guy, he said either TPS or TFI. I tested the TPS, it was within range, swapped on another TFI from a wrecked truck, and it started up and ran great, ran like a brand new engine, actually.Not saying Gary's issue IS the TFI, but they do fail, time to time, usually for no explicable reason other than they might just be a piece of gobshiznite. Quote Selected
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