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Is This Wierd?

Benzino33

By Benzino33,
in General Maintenance

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Benzino33 Experienced

Benzino33

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Okay, hi everyone

My s1 r33 gtst does this wierd thing, usually at cold start, it will rev high, like around 1500 rpm to 2k and wont come down. Either it just stays there for a while and comes down to normal when the engine heats up or it never comes down. What i noticed is that if i turn the car off and then on again, it goes back to normal idle (regardless of how cold the engine is). This has happened for a long time and has me confused.

Ive changed the throttle body, IAC complete unit, TPS, cleared all vacuum leaks and changed the crank position sensor.

Also what i notice is that when its in this "high rev" mode it kinda sounds like nothing is blowing through my exhaust when down shifting and leaving it in gear. but when i turn it off and back on again (while driving), its fine!

thats as best as I could explain it, found it a bit hard to explain to mechanics, but yeah, if any ones experienced this before, how did you deal with it? and would it pose a big problem?

Any info would be great, thanks

Ben

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Benzino33 Experienced

Benzino33

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<br />cold start.... till your thermostat closes... normal<br />
<br /><br /><br />

ok, I understand,, the only thing thats worrying me is my exhaust sounding like nothin comin through it.sometimes I have to turn it off and on a few times while driing for the car to sound normal. Sometimes happens as well when the engines warm. It would be normal, i'd turn it off, do something, come back and tun it on and it would do it agian. Maybe a blocked cat converter but i dunno

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SXC-R34 Collaborator

SXC-R34

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Well wat I have is not 100% like wat you are describing. The car revs high at about 1600-1800 rpm wen its cold and than it gradually drops down when the car is warm. Mechanic says that is due to big injectors and the way it's tuned on the Apexi Power FC. If you have big mods than I guess that what it is.

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Benzino33 Experienced

Benzino33

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<br />Well wat I have is not 100% like wat you are describing. The car revs high at about 1600-1800 rpm wen its cold and than it gradually drops down when the car is warm. Mechanic says that is due to big injectors and the way it's tuned on the Apexi Power FC. If you have big mods than I guess that what it is.<br />
<br /><br /><br />

yeah mine does just that, ive never checked my injectors, i think my car used to have bogger mods but were taken off later. I need to get an ecu soon to sort this out

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SL33K Experienced

SL33K

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I think its normal. Mine Does that all the time. and my Exhaust doesnt sound loud no matter how much i Rev it. When the Engine gets Warm it sounds Louder and Sweet and Idles at 700RPM and very smooth too.

I asked the Guyz at the workshop and they sed its normal.

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SXC-R34 Collaborator

SXC-R34

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<br /><br /><br />

yeah mine does just that, ive never checked my injectors, i think my car used to have bogger mods but were taken off later. I need to get an ecu soon to sort this out

Well I hope you find the problem, If it is a problem, it could be just your injectors or something. Good Luck

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Benzino33 Experienced

Benzino33

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Well I hope you find the problem, If it is a problem, it could be just your injectors or something. Good Luck

Ok well I'll get my injectors looked at. Also just wanted to ask. You know how the injectors are in line? now, just in front of them is this thing that looks like a but nut or something. Its got a connection coming out of it and that connection connects to the tps as well. What is that thing? And i think theres something wrong with it coz it constantly makes a ticking noise. Might this have anything to do with my problem?

Thanks a lot for the input guys

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SXC-R34 Collaborator

SXC-R34

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Ok well I'll get my injectors looked at. Also just wanted to ask. You know how the injectors are in line? now, just in front of them is this thing that looks like a but nut or something. Its got a connection coming out of it and that connection connects to the tps as well. What is that thing? And i think theres something wrong with it coz it constantly makes a ticking noise. Might this have anything to do with my problem?

Thanks a lot for the input guys

I'm honestly not sure, cause I got an RB25 NEO and the Injectors, and the layout is different.

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