BUILD THREAD 84 Regal back half/caged/mini tubbed lq4/4l80e build
- Thread starter Roblq84
- Start date
Hopefully you have it near maximum by 75% throttle. It’s worth checking with a manual gauge at the transmission. Even if the software is setup correctly, an internal issue that causes low line pressure will burn up every automatic trans.
Is it really a project car if you have never considered driving it off a cliff, lighting it up, or selling it? Lol
After taking some time off and putting it on the back burner, got back to it with a fresh set of eyes,
So I still do believe the trans is bad, or has an internal failure somewhere, it may have broken shift valve springs, or bad shift solenoids from the symptoms, the temps stay low now that I’m able to get a better baseline reading after installing the cooler, and does rip the tires, but still over runs the gears, today it actually popped out of gear at one point. These pretty much describe my exact symptoms below.
Secondly, screw fitechs crap sensors, they fail to acknowledge the common denominator in all my issues that come down to their brand which is ultimately outsourced cheap Chinese junk, offering to replace them with the same garbage, the map sensor failed while driving, the tps failed causing erratic readings and fueling and shifting, And now the IAC, which seems to be the root of all the issues I’ve had with it. When I pulled it, it was stuck in the out position, replaced it with a standard AC234 since the delco is no longer available.
It idles smoother, afr is much more crisp, no more stumble or hesitation taking off or wanting to die after a rev,
Thanks
After taking some time off and putting it on the back burner, got back to it with a fresh set of eyes,
So I still do believe the trans is bad, or has an internal failure somewhere, it may have broken shift valve springs, or bad shift solenoids from the symptoms, the temps stay low now that I’m able to get a better baseline reading after installing the cooler, and does rip the tires, but still over runs the gears, today it actually popped out of gear at one point. These pretty much describe my exact symptoms below.
Secondly, screw fitechs crap sensors, they fail to acknowledge the common denominator in all my issues that come down to their brand which is ultimately outsourced cheap Chinese junk, offering to replace them with the same garbage, the map sensor failed while driving, the tps failed causing erratic readings and fueling and shifting, And now the IAC, which seems to be the root of all the issues I’ve had with it. When I pulled it, it was stuck in the out position, replaced it with a standard AC234 since the delco is no longer available.
It idles smoother, afr is much more crisp, no more stumble or hesitation taking off or wanting to die after a rev,
Thanks
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Quick update,
So after some occasional rips, the trans definitely let go, the continuous popping at WOT was the trans slipping. It was a shady story from who i purchased it from, he became a salesman instead of a friend with that deal, which made me just keep denying the trans was bad.
I pulled the diff as well, the dilemma is if I’m going to keep the 295s (26s) with a lower gear, or go up to some et streets 28/29, with higher 4.10s or minimum 3.73s. The 26s are way easier to find, more mileage, and way cheaper, they just look stupid with a shortened diff, compared to a nice big tire that’s triple the price and a fraction of mileage, but anything is better than the old beat up way too high 4:88s it had in it. the bearings are shot, and I’m ditching the spool since it’s going to be street driven, the chatter and chirping would destroy the new gears prematurely. Going with a truetrac and i realized they make 3.90 gears which I think would work best for the type of driving I do, and also for safety reasons if I lose a wheel.
But the good news is the engine is totally dialed in, it’s performing great after working out all the bugs with the Fitech
I plan on keeping this setup until
Next year, and than going fbody t56 and selling the auto setup as a lot. And a
So after some occasional rips, the trans definitely let go, the continuous popping at WOT was the trans slipping. It was a shady story from who i purchased it from, he became a salesman instead of a friend with that deal, which made me just keep denying the trans was bad.
I pulled the diff as well, the dilemma is if I’m going to keep the 295s (26s) with a lower gear, or go up to some et streets 28/29, with higher 4.10s or minimum 3.73s. The 26s are way easier to find, more mileage, and way cheaper, they just look stupid with a shortened diff, compared to a nice big tire that’s triple the price and a fraction of mileage, but anything is better than the old beat up way too high 4:88s it had in it. the bearings are shot, and I’m ditching the spool since it’s going to be street driven, the chatter and chirping would destroy the new gears prematurely. Going with a truetrac and i realized they make 3.90 gears which I think would work best for the type of driving I do, and also for safety reasons if I lose a wheel.
But the good news is the engine is totally dialed in, it’s performing great after working out all the bugs with the Fitech
I plan on keeping this setup until
Next year, and than going fbody t56 and selling the auto setup as a lot. And a
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