Trailblazer23

i own a 03 trailblazer ls with 104,000 miles on it..the check engine light is on..so when i go to turn it on it putts and misfires really bad...the idle is low and moves slowley between 500-700 rpms...when i take off it hesitates then drives normal until i come to a stop and it does the putting and feels like it wants to die....i just recently replaced the throttle body,map sensor,and just did a tune up and nothing seems to fix the problem..please anybody with advice would help thankx

shawnvw

You need to get the codes scanned to see why the check engine light is coming on before you replace any more parts

rbarrios

when you replaced the throttle body- did you leave battery disconnected?
are you also running AC when this happens?

though your throttle body is new..... adds a twist.

many times when the battery is disconnected- and the tb is dirty and a user turns on AC you get a very bad idle......
until its cleaned and battery disconnected for at least 30 min.....

yes get the codes.... try Autozone- rent a code reader.....

Trailblazer23

ok thanks well i took it auto zone and the code was 1.Manufacture control 2.idle-misfire any advise?

Trailblazer23

and when i replaced the throttle body i disconected the battery for like ten min....should i leave it for at least 30 min??????and it putts and misfires bad without ac but when i turn it on it seems do it less but u can still hear it...

shawnvw

what was the fault code for the first one? there should have been a number that came along with the code. (Example P0301)
Sounds like they are using a generic scanner which is why is comes up as manufacturer control. If you can get the fault code, we can look it up and give you more direction

Trailblazer23

ok so i got the code it read P1345....any solution on how to fix the problem

rbarrios

A P1345 is a crankshaft/camshaft relation code. The sensors is used by the PCM for timing functions. They are basically a voltage inducer, triggered by a reluctor ring on the crankshaft and the exhaust camshaft. My manual suggests going to the dealer for a new position learning procedure when ever one is disturbed

the above I found at trailvoy.com
theres a thread on this code there...
http://forums.trailvoy.com/showthrea...345&page=2

Trailblazer23

sorry im new to the forum....so your saying to buy a new actuator solenoid or is there an electrical problem???.....and whats a new position learning procedure...does that have to do with the computer??? help any advise would help on how to fix the problem...thanks

rbarrios

Ive never encountered that error.
I copied and pasted that info from Trailvoy.com
the thread I linked- has pictures of the sensor- etc.
you should check it out.....maybe join that forum-