HELP! my idle is over 4k rpms at start. ='[

[non-stop rps13]

I have a mild KA-t set up s13 hatch.
I recentley just changed my motor mounts and today I tried starting it for the first time since then.

As soon as the engine starts it shoots up to over 4,000rpm. Turned it of and started it a second time and did the exact same thing. I couldnt really check the engine out cus I had to go to work soon (where i am right now).

Anybody had this problem before? I was thinking TPS?
Any help is good help thanks.

tg.

[DinoMan]

Is your MAFs plugged in? Sometimes if not plugged in it will idle high with no rev.

[Sileighty_85]

Vacuum leaks and Throttle body plate cracked open

[non-stop rps13]

Maf is plugged in and i checked the throttle plate and its closed. no leaks before this happened when it used to start up and my boost gauge reads -20 how it should be at idle.

I keep double checking my grounds over again just in case. i checked my spark plugs and i noticed #2 cylinder plug looks like i just took it out the box and all the other three plugs are sparking cus of the burnt marks on them.

so for some reason my #2 cylinder is not sparking. im getting new ngk spark plug wires soon maybe thatll fix it...

any ideas? i dont get it. it started fine then after i swap my oil pan and motor mounts out (nothing electronical), it doesn't want to start any more.

[ellococt]

Turn the car on
Unplug Maf sensor if the car doesn't stall/die there's your problem

[4-20sx]

^^^agreed try that out.

[non-stop rps13]

thanks fellas found out it was the TPS after all. replaced it and good to go. now i just got to find out why im missfiring and running real rich. Im hoping its the HG or a smaller problem.