Hello

I have a 2005 RX8 with an automatic transmission. The car run like a champ, but when the AC is on for a while, the car loses power. The engine keeps running, but when I give it gas, it bogs down. I just need to turn off the AC and the car and start the car again and the problem dissapears.

Thanks for any response. It's greatly appreciated.

 

overheating and coils going.

 

Wilson, supply us with some basic info, such as how many miles ago were the coils,plugs wires changed,do you have the original cat still installed,how many miles has this engine done ?

 

Thanks for your responses.
Miles : 55K
I replaced the coils, the sparks plugs and the plugs wires the last week, and yes I still have the original CAT installed.

Thanks

 

when did u change coils? if it was not long ago then ur engine probably ate ur cat long ago

wait, have replace engine mount?

have u ever. test for compression

 

I replaced the coils the last week, and I made the compression's test when I bought the car, 8 months ago,

 

coolant flush?

 

I will try this and I'll let you know, Thanks... By the way do you have some video or manual about this process?, I wanna try to do it by myself

 

I just want to let you know that replace the coolant fixed the problem, thank you very much for your help

 

Good call on that one nycgps.how the heck did you come up with that as a possible solution, I would agree if the coolant was really low, but just flushing it would never have occurred to me
Wilson, great to see you fixed it, maybe invest in a temp gauge.

 

common sense, unlike freaks like me(I did coolant change 3 times a year once to see how it effects the engine temp)

most car owner NEVER flush their coolant UNTIL their radiator blows up. and LOTs of time overheating is old/crap/expired/etc coolant related. I did a coolant/water pump change for one of the member here once, his coolant came out like ... complete crap, it looks black and polluted, he said his car overheating left & right, after I did a complete drain including the short block drain, car runs like champ never overheats.

As for Wilson, I assume you just drain the radiator, if that's really what you did, you still have about 1/2~1/3 of crap old coolant in your system. but you should be good for now, do another rad drain next year. ur car will thank you.