What is causing my acceleration problem on my Infiniti i30 after replacing the

[GM6706]

IAC and ECM? Ok, so a few months ago, My Infiniti i30 had a problem where it would stall if I was idle at a stop light for too long. I had 2 mechanics verify that it was both the IAC valve and ECM that went bad. Turns out, this is a very common problem amongst 2001 Infiniti i30s between the 80K and 100K mileage range. My mechanic replaced my IAC with a brand new one, and found a refurbished ECM that was matched by VIN and serial number. He replaced both, the ECM codes and all that tech stuff was done to make sure the new ECM was registering the new IAC and the car was driving fine until it got to the freeway. When you step on the gas, the car will not accelerate. It bogs down and won't go fast at all. I don;t know what the exact RPM was but the car was definitely not speeding up and this wasn't a problem before the IAC and ECM were replaced. What's causing this?

 

[san1728]

Hey, I am having the same problem....did you fix the problem??? If so , how did you fix that issue....

 

[infinit driver]

IAC and ECM? Ok, so a few months ago, My Infiniti i30 had a problem where it would stall if I was idle at a stop light for too long. I had 2 mechanics verify that it was both the IAC valve and ECM that went bad. Turns out, this is a very common problem amongst 2001 Infiniti i30s between the 80K and 100K mileage range. My mechanic replaced my IAC with a brand new one, and found a refurbished ECM that was matched by VIN and serial number. He replaced both, the ECM codes and all that tech stuff was done to make sure the new ECM was registering the new IAC and the car was driving fine until it got to the freeway. When you step on the gas, the car will not accelerate. It bogs down and won't go fast at all. I don;t know what the exact RPM was but the car was definitely not speeding up and this wasn't a problem before the IAC and ECM were replaced. What's causing this?[

I kind of had same problem so heirs what u need to do it sounds like it mite be UR head gasket it mite sound dumb but that's what I said I found a place that did it for 1200 but that mite differ depending on where u live it sound dumb bro but it should fix that it is kind of a big deal but once u fix it u got a brand new car shit u not!

 

[A_Train]

I was having similar issue. After the car had sat for 4 or more hour it would not have any power the motor would not rev up. After running for 20 min are so alot of the power came back just don't stomp on the gas and expect to go in fact it may loose power. I had the have the Mass Air Flow Meter , Volume Air and Element AS replaced. Now runs great.