Yank ST3800 Non Lockup - Part2 - Help
Thread Starter
Joined: Nov 2001
Posts: 5,649
Likes: 9
From: Warr Acres, OK
Yank ST3800 Non Lockup - Part2 - Help Here's what I have discovered after putting about another 100 miles on the car. (300 total). Under very light acceleration from a stop, after reaching approx. 40 mph, the converter will lock up and stay locked up up to 70 mph. After traveling 8-10 miles locked up with the cruise on 70 mph, it will unlock and I cannot get it to relock without coming back to a stop. If I accelerate moderately from a stop (not WOT) and don't get it locked up by between 40-50 mph, and continue on up to 70, it will not lock up at all. Even letting off the gas and coasting at 70 mph will not lock it up. The occasional chatter is there when locked up, but I'm not worrying about that right now. Any idea what's going on here???
Joined: Nov 2001
Posts: 3,043
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From: Texas and Qatar
Re: Yank ST3800 Non Lockup - Part2 - Help Is your 00 SS the only car of yours without converter issues? I remind you it was all in my superior installation that keeps that one going strong, lol <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
BTW for those Mac headers (topic gone) I wouldn't give more than 75% of new cost IMO. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
BTW for those Mac headers (topic gone) I wouldn't give more than 75% of new cost IMO. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Thread Starter
Joined: Nov 2001
Posts: 5,649
Likes: 9
From: Warr Acres, OK
Re: Yank ST3800 Non Lockup - Part2 - Help Hi Joseph. So you figured out who 2xLS1 is. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Actually, I took the Stealth 2600 you installed out of the 00 SS and I replaced it with a ST3500. Actually, I'm getting pretty good at it. Can change one out in about 4 hours lying on my back. Have you looked at my other thread? Any suggestions??? I sold the 98 Z and bought a 99 Hugger SS. It needs 3.73's. I'm debating whether to do it myself, since I had such an excellent instructor, or to go back for a refresher course. I'm going to send you an e mail about the T/B's.
I sent it to your hotmail addy. That's different than the addy. I had for you.
<small>[ July 21, 2002, 01:18 AM: Message edited by: 2xLS1 ]</small>
I sent it to your hotmail addy. That's different than the addy. I had for you.
<small>[ July 21, 2002, 01:18 AM: Message edited by: 2xLS1 ]</small>
TECH Apprentice
Joined: Nov 2001
Posts: 387
Likes: 0
From: South Elgin, IL
Re: Yank ST3800 Non Lockup - Part2 - Help Damn, I wish I could offer some insight but I have about 2K miles on my ST-3800 in a '02 Z28 and not a single problem. Locks up fine, I don't drive in D rather than OD, I have a Trans-Go kit I installed myself and I ran ported ends for about a 1000 miles.
I'd maybe ATAP the car during a few runs and see if you are reporting misfires or anything else unusual.
I'd maybe ATAP the car during a few runs and see if you are reporting misfires or anything else unusual.
TECH Enthusiast
Joined: Jan 2002
Posts: 531
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From: Helendale, Ca (SilverLakes)
Re: Yank ST3800 Non Lockup - Part2 - Help Ported mafs have been known to foul up A4's. Happened to me twice. Finally put stock Maf back on and now runs perfect. <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
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From: Sacramento, CA
Re: Yank ST3800 Non Lockup - Part2 - Help I agree.
I started having trouble with mine when I installed a ST3800 but after swapping to the stock MAF the problem instantly went away.
Then I had problems when I installed the cam and had major lock up issues. Turns out you have to turn off the Misfire code in the PCM and it will fix that problem.
<small>[ July 25, 2002, 05:17 PM: Message edited by: F8LPONY ]</small>
I started having trouble with mine when I installed a ST3800 but after swapping to the stock MAF the problem instantly went away.
Then I had problems when I installed the cam and had major lock up issues. Turns out you have to turn off the Misfire code in the PCM and it will fix that problem.
<small>[ July 25, 2002, 05:17 PM: Message edited by: F8LPONY ]</small>
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Teching In
Joined: Jul 2002
Posts: 5
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From: Cincinnati, OH
Re: Yank ST3800 Non Lockup - Part2 - Help </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 2xLS1:
<strong>Here's what I have discovered after putting about another 100 miles on the car. (300 total). Under very light acceleration from a stop, after reaching approx. 40 mph, the converter will lock up and stay locked up up to 70 mph. After traveling 8-10 miles locked up with the cruise on 70 mph, it will unlock and I cannot get it to relock without coming back to a stop. If I accelerate moderately from a stop (not WOT) and don't get it locked up by between 40-50 mph, and continue on up to 70, it will not lock up at all. Even letting off the gas and coasting at 70 mph will not lock it up. The occasional chatter is there when locked up, but I'm not worrying about that right now. Any idea what's going on here???</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Do you have a scan tool? If so is the computer commanding lock-up and the converter is not locking?
<small>[ July 25, 2002, 06:52 PM: Message edited by: QuickGN ]</small>
<strong>Here's what I have discovered after putting about another 100 miles on the car. (300 total). Under very light acceleration from a stop, after reaching approx. 40 mph, the converter will lock up and stay locked up up to 70 mph. After traveling 8-10 miles locked up with the cruise on 70 mph, it will unlock and I cannot get it to relock without coming back to a stop. If I accelerate moderately from a stop (not WOT) and don't get it locked up by between 40-50 mph, and continue on up to 70, it will not lock up at all. Even letting off the gas and coasting at 70 mph will not lock it up. The occasional chatter is there when locked up, but I'm not worrying about that right now. Any idea what's going on here???</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Do you have a scan tool? If so is the computer commanding lock-up and the converter is not locking?
<small>[ July 25, 2002, 06:52 PM: Message edited by: QuickGN ]</small>
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