check engine light/ won't accelerate

[malern28us]

Okay I am at a total loss here.

After having to replace my original 95 Tsi Awd motor after a broken timing belt, the replacement motor is acting up.
The problem existed before I replaced stock intake with Ingen pipe and filter but happens more frequently now. The plug wires are new and plugs are new.
The problem mostly occurs on the highway at cruising above 65mph and has occurred on humid days after raining.
My Talon will just start running "rough." There is no other way to describe it. Almost like when you are trying to accelerate when the plug wires are going bad but it is at cruising speed. It will accelerate but almost like I am running on 3 cylinders. The CEL would come on and reset itself after a couple of "in-town" drives but now remains on continually.
Any suggestions? I went to local Chrysler dealer....$82 just to read the code and a 1 week wait. My build date on the car was 09/94...is the wiring harness capable of supporting the code readers like they use at autozone to find out what the code is? I am beginning to think it is a lost cause at this point but want to avoid doing any engine damage at theis point.
Thanks in advance.

 

[Maximuscr31]

autozone can do it. If not get a used datalogger in the classified section cheap and read it yourself

 

[Doug99RS]

If the 95 turbo controller is like the 95 non-turbo controller (software wise) then it is still an OBDII type system in which case most generic scan tools can retrieve the trouble codes.

If you cannot find a scan tool or no one will check it for free then you've obviously got to weigh the possibilities here. Is $85 worth more than several burnt valves?
Doug

 

[Moosh]

Go to Autozone or spend that money on an OBD-II datalogger. The port is under your dash driver side next to the center console area.

 

[Deleted member 9465]

Originally posted by Moosh
Go to Autozone or spend that money on an OBD-II datalogger. The port is under your dash driver side next to the center console area.

I agree with autozone. I saved $55.

 

[malern28us]

Okay......made it to Auto zone to have my codes read. They were as follows #300 (random mult misfire) : #170 (Fuel Trim Malfunction) : #125 (closed loop temp not reached/excessive time to reach closed loop fuel control) and something about mult misfire on bank#1....although I am clueless at to what that means
Any help?

 

[malern28us]

Okay......made it to Auto zone to have my codes read. They were as follows #300 (random mult misfire) : #170 (Fuel Trim Malfunction) : #125 (closed loop temp not reached/excessive time to reach closed loop fuel control) and something about mult misfire on bank#1....although I am clueless at to what that means
Any help?

 

[Doug99RS]

Closed loop temperature not reach sounds like the equivalent of "Engine stays cold too long" which normal equates to a defective/broken thermostat. What kind of history have you got with the thermostat? Is it new, old, a different range than normal?

Keep in mind that the engine coolant temperature is crucial for fuel management. If the engine fails to reach proper operating temp then it will cause multiple cylinder mis-fires because engine temps i.e. combustion chamber temps are not ideal for combustion.
Doug
p.s. those codes are a little wack as far as the numbers go. Most have a "P" in front and are 4 digits.
Doug