boostedorbusted

iTrader: (3)

car 02 tl-s auto (duh) 164k only mods are ct-sc , coilovers and 07tl-s wheels. it is not throwing any check lights or strange noises at all. I've been driving it like this for a 2 weeks.
here's the problems and they all came up on the same ride to work.

1- cold start trans shifts to drive normal, once warmed up wont shift out of park. have to use shift interlock to put in neutral then start and put in drive.

2- in drive car has new shift point of 5k under wot. manual mode works fine.

3- idle is up and down between 500-1500.


any ideas or help would be great if more info is needed lmk thanks in advance.

3.2TLc

Hey Boostedorbusted, if the idle is all over the place....try cleaning the TB intake manifold along with the IAC valve. May help the idle speed to be more consistent.

Try resetting the ECU afterwards, and see what happens. With the trans interlock, did anything else recently occur that may have caused this problem ? Is the tranny operating normal after over-riding the interlock ? Maybe the gear position selector switch is bad or out of adjustment, IDK. Strange that it doesn't do this when cold. Dunno, perhaps someone else can chime in !!!

Nicks2001tl

Regarding rpm`s going up and down. Check the iacv valve, throttle plate and body if its gunked up clean with a throttle body cleaner and oil the plates where its connected to the throttle body. Also clean and lube the throttle springs.

Your tranny sounds to me that it could use professional attention.

No codes equals unusual problem.

boostedorbusted

iTrader: (3)

ok cleaned t body and mani this afternoon and disc battery for 30 ish min. still the same issue's. it drives fine manual shifting it but idle is still not right. no recent work has been done. ive had the car a year now and had no issues with it till now (2 weeks ago).

ErickUa5

Sounds to me like you have a vacuum leak, Have you checked the hoses on the intake manifold for cracks ? its best to have the engine on while doing this also check the coolant level if its low ?

3.2TLc

Yeah, as ErickUa5 said.....check the coolant level. Ya may have air within the cooling system, try burping it.
If the coolant is low, ya may want to have the system pressure checked. Low coolant or air pockets can cause an erratic idle.

David1221

Sounds like a vacumn leak to me too...

boostedorbusted

iTrader: (3)

just got back to work from lunch coolant level is good. push neutral safty switch and pull into drive and get 3 lights on dash check engine, tcs and triangle w/! in it. have 1 code on scan tool p1106 any idea's?

ErickUa5

Has this car ever been in a flood? reason I ask is because
It means: Barometric Pressure Sensor Range/Performance Problem.
Its a sensor inside of the ECU.

Skirmich

P1106 is related to the MAP Sensor (Been There, Done That). Perhaps it didnt handle the boost from the SC, Do you have the extra boost pulley? The sensor sits on top of the trottle body.

ErickUa5

"mods are ct-sc" I missed that one.

boostedorbusted

iTrader: (3)

no never in a flood. no extra pulley. so the sensor is going bad? so needa get ahold of ct for a new one or can ct be bypassed to the parts house?

Skirmich

I dont recall the exact parts on the CT-SC does it come with an aftermarket MAP sensor? If it does then its time to call CT.. If it doesnt the Stockie can be found on junkyards its a common MAP sensor for Honda.

Tosh

Did you clean the IAC valve?

boostedorbusted

iTrader: (3)

no didnt clean the iac valve. not having any luck sourcing the map sensor it is different from the stocker.

boostedorbusted

iTrader: (3)

Corection map sensor is same as stock 1. Will be replacing and will have out come this afternoon.

boostedorbusted

iTrader: (3)

update no go on the map sensor it wasn't the problem after seeking advice from a friend you hooked up his scan tool and looked at a lot of info the tps is not reading the correct voltages at idle or wot. will be replacing it Friday with a new 1 or used which ever I get my hands on first.

ErickUa5

Before you buy the TPS which means the whole TB unless you hack it what did the scan tool report ? 9.4% Is a normal reading at idle and at wot cant remember but its less than 100% for sure.

Skirmich

Its 97 ish % at WOT.

boostedorbusted

iTrader: (3)

It was seeing 1.01v at idle and 3.48v at wot.

Nitin

iTrader: (1)

Do you have the E-Manage Blue or upgraded fuel injectors by any chance?

boostedorbusted

iTrader: (3)

Have a emanage blue but its for a 6 speed and never installed it on the auto and no on the injector all are working correctly.

boostedorbusted

iTrader: (3)

Also update as of 2 days ago will not shift outa park while cold either must use safty switch everytime.

ErickUa5

Have you inspected the throttle plate ? The TPS might be showing incorrect voltage because its not fully closing. Thats my theory

boostedorbusted

iTrader: (3)

Installing new tb as we speak.

ErickUa5

Cool, Hope it all works out for you. keep us updated

boostedorbusted

iTrader: (3)

Installed and fixed all issues are no more. Now idle is .49v and wot is 4.49v. Thanks every1 for the info and support.

Skirmich

^ Glad you found the trouble now we have the records for new issues with that weird P1106.. Funny you didn't get the code for Wrong TPS Threshold...

ErickUa5

I'll assume the parking thing started to work after the TPS was fixed, If it doesn't see the right voltage it won't let you out of park.

boostedorbusted

iTrader: (3)

shifting issue and all other issues from above are fixed now car is driving great again. b4 the idle was 1.07v and wot was 3.21v.

Luke7

Had the same problem with my 2003 S type. It was a BAD BATTERY that wasn't putting out good juice. My car was doing all kinds of weird stuff. Wouldn't shift out of park/idle was up and down. Replaced the battery and all problems went away. I experienced this before in my 99 TL. Have your battery checked. I never thought a battery would cause so many weird things to happen till I replaced it.