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Blowing the dust off this one last time. I had a disconnected vac line. To summarize, first time I rebuilt it I cracked the fuel line going into the fuel rails. Either coincidentally or as a result, the fuel pressure regulator went out. At some point trying to diagnose that the passenger side...

Can't believe I started this thread a whole year ago. Given the space between last post and now, you can tell I hung up the coveralls as it got cold over the winter. Well spring has sprung and with the warm days this weekend I'm back on it. Rubber mat and steel plates on the stone driveway with...

Finally, I could move this thing closer to the house so it could be washed. Woo!

You saying I can't just hit these with some brakleen and toss them back in? lol Joke aside, I got new ones and tossed the first 3 in on Sunday, then did the second 3 today. The car runs now! It still has an inconsistent backfire/knock, and I mean inconsistent. Sometimes it'll pop back to back...

Yep. The relay is stuck in the closed position causing them to stay on. When mine failed it would alternate between being stuck closed and open (on and off). Swap the relay with a new one.

If it's like the 89, it'll be in the top right of the pedal box. You will need to undo the under-dash to get to it. I had to replace mine 4 years ago. The dash was only 4 screws and 8ish bolts (memory is fuzzy) so that's the easy part. The hard part was getting the module to unplug, since my...

September update: Tore everything apart again. Fuel pressure regulator had failed. The intake was sucking in fuel from it causing everything to run rich. I replaced it and there doesn't seem to be any change to how its behaving. I'm going to lift the car to pull and clean the plugs (ugh....) and...

Secondary post to add to my reply: I remembered I took photos of it. These were almost a year ago as I was putting it back together. Image one is the part of the harness that sits by the supercharger top had. Image two gets fed down by the cam position sensor.

I have a question for you in regards to that. What are the tiny Square connectors all over the harness for? They have a T-shaped female receptical, and one of them goes to the OBD1 diagnostics plug. Mine right at the CPS was frayed to the point that only 4 hairs of wire are holding it together...

Ok so update on this, the Standard Motor Products LX230 will NOT work with the 89. The bolt pattern is different, so only the 7-12 side can be bolted down. The 1-6 side are in totally different zip codes. Worse yet, the car won't even fire up now. It just cranks, hydrolocks (I guess) on the...

The number I got off of my 89 is E9DF-12A297-BA, secondary number 9D11A. I see on TBSC Shop they used to have DIS modules with the same part number for both the SC and the Taurus SHO, but all the SHO listings I can find on Ebay have different part numbers. I can't even find any Tbird listings...

The only 2 cents I can add is a knock-off 10th gen Tbird was in Grand Theft Auto 4 as the Vapid Fortune, then the first gen Tbird was later present in GTA 5 as the Vapid Peyote. I'm hoping the SC can make an appearance in GTA 6 whenever that comes out, especially with it being based in...

Darn. That is the opposite of what I had hoped to hear, but it's a direction I will heed an alert to. Where do I even begin to do diag for this? I have a volt meter with two basic prods with short wires I've used to test for continuity in small examples, but that's really all the more experience...

I've been adding to the off-topic thread on Operation Replace Fuel Injectors for a while, but I feel like this is more technically driven and needs its own thread. I have two trouble codes pulled now from a starts, runs, but runs like molasses in December: 49: SPOUT signal problem 96: Fuel Pump...

How could you tell that it was the DIS? I'm on a crusade trying to get my 89 SC to run smooth, and the DIS is one of the things I have yet to try. As for heat dissipation; I wonder if taking longer screws, then custom-printing and shimming a steel grate under it like we do with PC coolers would...

I'm looping back onto this trying to pull strings wherever I can. I'm still chasing this problem months later after finding a problem, fixing the problem, and finding out while it was A problem, it wasn't THE problem. I take it there is no easy way to get a noid tester down on the injector wires...

Update: Cats cleared, and we're misfiring/backfiring again. Life happened and July went by fast, but I had time the past 2 days to carry on. Cats are cleared clean though, they have been reattached, aaaaaaaand the car still misfires like mad, now with much more backfiring! Dammit. I was so...

Found it. I let distractions take over and started to look at aftermarket systems, and Bill over on Super Coupe Performance has it as a comedic footnote on each of the aftermarket exhaust kits. I was not expecting to find it there of all places. Haha! The diameters for the OEM pipes are: 2" dual...

I need to chop the cats off, clean them out, then put them back in. Car runs with exhaust off, but it tries to die with it on. I have cutters in my online cart but I don't know what diameter clamp I should order. 1989 3.8 SC. I could find PLENTY of posts on aftermarket setups, people talking...

After much struggling, examining, and reconsideration, I'm just going to cut the cats out, gut them, then exhaust-clamp them back on. The effort required to drop the entire exhaust system requires patience I do not have at this time given how much rust has infected the hangers and flanges. It's...