car is acting wired

[brownlx]

Hi, im kinda new to the site but ive been reading for a while(great site by the way). Well first off idrive a 91 auto lx. About three weeks ago the s light started blinkig every now and then. When it would blink the car woud only shift from 1st to 4th and would completely skip 2nd and 3rd gear and when i turned the car off and back on it would go back to normal and the s light would stop blinking. I thought the problem might be the tcu so i piked one up at a junk yard and it stop doing that for a few of days untill today, it started doing it again. Well thats the first problem the second problem is the car wont start when it gets to its normal tempereature, so when i tun it off and its still warm i gotta wait like 5-10 min for it to cool down so that it turns on again. I did a tune up about a month and a half ago so all the ignition stuff isnt that old. I could use some help so any imput would be greatly apreciated. Thanks in advance

[accordaffair]

Pull the code first. Always give us the code first.


May need a new tcu, maybe not. Pull the code.

*edit*, I see you said you already got another tcu, sorry

And that second problem may be your main relay, they commonly fail, but are usually easy to fix

[brownlx]

Pull the code first. Always give us the code first.


May need a new tcu, maybe not. Pull the code.

*edit*, I see you said you already got another tcu, sorry

And that second problem may be your main relay, they commonly fail, but are usually easy to fix

Thanks for the help man, ill chek the relay and search for codes

[cornerkid322]

what the heck is a "tcu"? and how do you pull codes. are u guys talking about the "ecu"?

[jayrq2o1]

what the heck is a "tcu"? and how do you pull codes. are u guys talking about the "ecu"?

the tcu is the box next to the ecu. its the transmission control unit. don't think its on manual's though (kinda duh, but i don't know, im sorry).

to pull codes, open the cover over the a/c blower (there should be 2 or 3 screws, i forget, then just yank it off), and jump (connect using some form of wire or metal) the connector hidden in there. for tranny codes, the s blinks, for engine codes, the CEL blinks.

also, too lazy to find the threads for this, sorry. but there in here somewhere.

[brownlx]

Well I finaly got around to cheking for codes, the codes i got were 1,2,3,7,8,14. I found a TCU code chart here but it only goes up to 9. I was wondering if any one knew what code 14 is or were I could find another TCU code shart. Thanks for the help guys

[NorcoAccord]

i took a look in my book and it say IAC idle air control valve. Hope that helps

[SN2BH22CB7]

if its skipping gears like you said....its not the main relay...what it MAY be....look under your hood....look on the tranny itself..you see (4) small cylinders sitting on it....THOSE are your transmission shift solenoids..THOSE could be going out!.....check your TCM and your SHIFT SOLENOIDS! ..change em all out! and change out your TCM to eliminate ALL the shift problems! now, you said the "S" light flickers....the TCM is starting to go out! or...it could be your VSS starting to go as well!

just thought Id throw in my .02 cents of experience to help a fellow cb7er!!!

[brownlx]

This is the chart i found http://home.earthlink.net/~michaelp.../TCM_codes1.PDF. Accordig to this I have a messed up lock up control solenoid and a messed up shift control solenoid. SN2BH22CB7 are the transmission shift solenoids the same thing as a shift control solenoid?