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View Full Version : High Idling RPM for ST162



leoccl86
02-10-2010, 03:18 AM
Qns!

Does anyone of you face the following problem?

After a warming up and a few accelerations, the idling speed goes to 2k. Only if I tap the accelerator it'll goes back to 1k.

1. shldn't the idle speed be 650 to 700?
2. i've checked and cleaned the throttle body AND the "buttlefly flap" but the same problem occurs.

help help! it's eating my gas!!!

CollapsedNut
02-10-2010, 04:58 AM
Vacume leak or sticky throttle cable comes to mind.

CriScO
02-10-2010, 05:26 AM
^ Ding ding. Those are most likely, especially the vaccum leak.

It wouldn't hurt to also check the Idle Air Control Valve(IAC) and the water temp sender for the ECU. There's also an A/C idle up valve if you have air conditioning.

But check for vaccum leaks first.

leoccl86
02-10-2010, 06:15 AM
vacuum from the intake?

where's the IAC?

4thgenceli
02-10-2010, 03:22 PM
Yeah chances are there's a vacuum leak. I had the same thing on my old celica, I redid all the vacuum lines & replaced the temp sensor. Problem solved.

Grot
02-10-2010, 04:13 PM
i had a similar issue but i blew my engine so i never figured it out.

leoccl86
02-18-2010, 07:12 AM
What's that tube that links the master air intake and the throttle body called?
It has a crack at the opening but i've taped it up. The RPM has been intermittent ever since.

leoccl86
03-01-2010, 10:01 PM
What's that tube that links the master air intake and the throttle body called?
It has a crack at the opening but i've taped it up. The RPM has been intermittent ever since.

anyone?

4thgenceli
03-02-2010, 01:45 AM
There's ya problem! lol.

Best to drop that plastic tube & replace it with a 'cold' air intake. You can pull the intake filter box & all that shit out, put in the new one. You'll need to take the MAF off & get the adapter kit to make it work.

Here's what I had on my old 89.

Cold air intake pipe (http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?itemIdentifier=245770_517010_5972 _&skuDescription=Spectre+Performance+/+Intake+Kit+-+Performance&brandName=Spectre+Performance&displayName=Intake+Kit+-+Performance&categoryNValue=16899999&sortType=&store=3392&isSearchByPartNumber=false&fromWhere=&fromString=search&counter=3&itemId=1867-0&navValue=16801867&filterByKeyWord=intake&productId=245770&searchText=intake&categoryDisplayName=Performance&parentId=68-0)

Connect that to the intake manifold, and the other end to the MAF outlet. Then grab one of these...

MAF adapter (http://www.autozone.com/autozone/catalog/accessories/accProductDetails.jsp?counter=0&categoryDisplayName=Performance&fromString=search&itemIdentifier=862358_0_0_&productId=862358&sortType=&parentId=8-10&filterByKeyWord=maf+adapter&categoryNValue=100008&navValue=101300&fromWhere=&itemId=1300-10&displayName=Polished+aluminum+MAF+adapter+includes +bolts+adapts+small+Ford+mass+air+flow+sensor+to+a ccept+4+in.+intake+system&store=3392&skuDisplayName=Polished+aluminum+MAF+adapter+inclu des+bolts+adapts+small+Ford+mass+air+flow+sensor+t o+accept+4+in.+intake+system&brandName=Spectre)

Then just pick up a cone filter & you're all set. Feel free to remove the resonator (under driver fender/intake box) to get a lil' more 'growl' outta WOT.