I am throwing 2 codes which make the ses light pop up. The codes that come up are 36 (MALF 36: Hi-Res Fail) and 67 (MALF 67: A/C Press Sensor Degraded).

When driving the car it drives fine until I give it more than half throttle, then it stops for a second almost like you are applying a clutch, then the ses light pops on and it runs fine. Is it ok to drive with these 2 codes, and what can I do to fix them?

Car info on my cardomain(in sig)

Thanks
Kevin C

 

I think that hi-res indicates an opti problem.

 

Thanks for the help.
I think you might be right about the opti because on my 2 hour drive home last night, it was starting to have a small miss at almost all rpms

 

Check the wiring harness and connectors for the Opti. They are frequently corroded, causing problems with the signals.

Shoebox has a code list specifically for the LT1, which shows:

DTC 67 = A/C refrigerant pressure sensor circuit (pressure sensor or A/C clutch circuit problem)

 

Thank You I will go out and look at all the connections on the opti, this morning driving home from my girl friends house 10mins I had no problems and it didnt even set the the ses light on. And on code 67, I did find a leak in my AC line, it is leakin and corroding right where the rubber hose meets the steal pipe leading to infront of the radiator

 

I looked and from what I could see all the wires were on the opti good and the connection going to the opti is good. Is there anything that would make an opti go bad so fast this is my second opti in 2 years, I have only had this one for a year and a half. Is there any reason why it would have the miss sometimes and not other times, and that the first time it does it it almost cuts off then will run fine.

 

Have the coil and ICM been tested?

 

The coils were also replaced last time the opti was which was about a year and a half ago. How would the ICM be tested?

 

I think Autozone can do it. If you get an employee who knows his stuff.

 

Thank you I will go try tomorrow. and when you say ICM do you mean the cars computer

 

Ignition Control Module.

 

There's only one coil.

 

Ok, I went to autozone today and they said they could test the ICM, Advance said they could test it but not while it was in the car. While driving between these two places today the car stalled twice while sitting at a stop in gear. What is the best way of going about fixing this problem I have?

 

The ICM will have to be removed from the car. Sometimes they get hot and stop working. I'd check the coil wire as well.

 

it seems like the problem only happens once the cars warms up to temp and goes into open loop. Should I just go ahead and order a new opti? or wait since that might not be my problem. I am kinda low on money try to get this done here on a college budget

Moparman thank you for all your help so far.