Code P1811

[quicksilver]

So a few months ago when I bought my car, I scanned it for codes, and this was one of them. I reported here about it but it was no concern cause there were no issues at all with the trans. I did notice though that the shifting on the car was getting pretty firm during drives, cold or warm, it was the same.

Yesterday the actual problem reared its ugly head. After doing some running around and on my way home, the trans started slamming into gear and it would actually cause the car to shudder. I was driving up a steep grade when this happened and it would persist until I was home. At first I was thinking "*shoot*, another trans to swap out" then the SES light came on and I knew what was going on. I havent scanned it yet, but I'm willing to bet I'll pull p1811 from the scanner, I never had this happen on my other car, but sure enough I bet its the pcs. I wonder if this is why they rebuilt the trans in the first place, lol.

The best part is after letting the car sit and cool off, it was able to shift normal again. So I think I'll take the time and money to install a shift kit, trans cooler and a 180° t-stat. Yea its not an actual fix, but its a great form of preventaive maintenance, so if it works, I'll take it.

[nos4blood70]

Putting a shift kit in fixed this for me, and for many others. I'd classify it as an actual fix.

The trans cooler will help a bunch too!

[quicksilver]

I installed a B&M trans cooler a couple months ago along with a 180° t stat, it has seemed to help with the root cause of the harsh shifting, but has not completely cured it.

After I installed a new ICM and front control arm, while driving the bonneville, I get some really harsh banging when going into tc lockup in 4th gear. It usually happens when on a slight incline under a slight load. It acts as though the tcc wants to disengage to accelerate, but then locks up immeadiately after it let's go. Anyone ever have this happen in their bonne? The fluid is topped off, it's also clean as clean can be and with out a burned smell.

I already have a trans go shift kit on the way and have a new filter and pan gasket ready to go. Despite anyone think that this will help or am I missing something?

[nos4blood70]

The shift kit is the most important part here, it is the only thing that will actually force the shifts to not be harsh.

[quicksilver]

The shift kit is the most important part here, it is the only thing that will actually force the shifts to not be harsh.

Should have taken your word beforehand, lol. I'll find out in a short while now, though it's taken long enough to get this done.

[quicksilver]

Finally working on installing the shift kit for this car. Pulled the pan and much to my surprise, there is a ton of material on the magnet in the pan. I have a picture to upload that gives you a decent idea of how much is on there. I'd say it's close to an 1/8 of *shoot* just sitting on it. I have not had any slippage occurring at all, and the fluid is still a deep red and not burnt. Is this much material due to a trans rebuild and parts breaking in?

Just looked at the paperwork for the trans rebuild, it was done roughly 22k miles ago, with no filter chanel done since then, until now. It does not say what was done exactly, but according to the paperwork I have, it would only move slightly in 1st before the rebuild.

[quicksilver]

I need some insight on this one guys, is this normal or bad?

[quicksilver]

Install complete, didn't really find anything else of worry while doing this. Took it for a test drive and though everyone says the shifts will feel more firm, I didn't really feel it. I did notice that they were quicker on the other hand.

I didn't really get on it too much either due to the fact of losing my s/c'er belt from a seized tensioner pulley. I have all new pulleys for that entire belt ordered except for the s/c'er cause they all seemed like they would crap out on me.

[Archon]

I'd say that the crud on your magnet is on the high side of normal.

[nos4blood70]

Quick, firm, it's all the same. Hahaha You went with Transgo correct? That's a very gentle shift kit.

And yes, Archon is right. I wouldn't say that the magnet is something worry about.

[quicksilver]

Quick, firm, it's all the same. Hahaha You went with Transgo correct? That's a very gentle shift kit.

Yes I did, it seemed that's what everyone has been using and what has been proven.

I'd say that the crud on your magnet is on the high side of normal.

Still normal, sounds good to me! Thanks for the input!