Sameru

I have a 2003 AP1 and when I cold start it, it Idles High around 2,800-3000krpm and very slowly drops to 2,500 than 1,500. But once I drive it on the road, it stays at 2,200 and after about a few seconds 10-15sec it drop to 1,000-1500 depending and moves around in these rpms. I check spark plugs to NRG because it has a misfire and does it more when cold. As I’m Driving as it it still misfire so often and less the longer I drive but it will be like this the whole day as I’m driving. When cold start it happens a lot. I Cleaned the IACV and remove the T20 Star Bolts and clean the sensor shields/plate about 3 Times already. Almost very little difference and unnoticeable change or help. I haven’t spray the hose with Carb Cleaner to see if it’s a Vacuum line from the intake manifold. But that’s where I’m at, I ordered a cheap $28 dollar IACV to see if it helps from EBay . I saw the coils from Walmart that are about $38 I believe. But please Help if you guys had something like this happen.

windhund116

Last valve adjustment?

rob-2

How many miles?

Sameru

I bought the car at a dealer that doesn’t know when

Sameru

It has 134k miles

manystyles

Misfires? There's has to be codes.

Sameru

No check engine light, will their be codes if I get it check?