Toyspeed.org.nz Message Board

by **scope** » Thu Aug 24, 2006 9:39 pm

hello

my mate just installed a 4age into an ae70, started first pop but the idle is weird. it sounds like it won't idle and you're putting your foot on accelerate to give it some gas so it lives. kind of like the bridgeport idle but really slow. it doesn't die or anything, a real mission to take off on though! what could the problem be ? i got told that it could be a vacuum problem, is this right ?

thanks

by **l1ttle_d3vil** » Thu Aug 24, 2006 9:46 pm

yep, could be a vacuum leak. check all your vacuum hoses etc.

by **Ae92typeX** » Thu Aug 24, 2006 10:05 pm

sounds stupid, but almost sounds like 2 plug leads are the wrong way round. Ive seen it done before.

by **cosi** » Thu Aug 24, 2006 10:10 pm

Spray CRC around the intake manifold, the engine will draw in the CRC from wherever its leaking and change tunes. You can pinpoint the leak this way.

by **fangsport** » Thu Aug 24, 2006 10:12 pm

purged the cooling system?

Details of car here · by **AE85coupe** » Thu Aug 24, 2006 10:25 pm

my vote is on the cooling system, will have an airlock most likely, seen that a few times in 4ages

by **rwd_mayhem** » Sat Aug 26, 2006 6:19 pm

it wont be cooling system because it does it when its cold and when its hot.
it revs between 2000 and 3000 rpm, it revs then completely dies then revs again, also in all gears itll speed up for a while then just slow down then speed up again, in 4th it speeds up to 60 then down to 50 then back up to 60 this is with my foot off the accelerator.
the wrecker thinks its either the MAP sensor or the throttle position sensor, i think itll be the MAP sensor because it got cracked by accident when we were putting the motor in.

P.S. 4AGEs are so incredibly awesome!!!! even with no exhaust it still quick as so much fun to drive even when its loud as $&#$% and everyone thinks your a wanker that keeps revving it when stopped at lights.

by **z0ton** » Sat Aug 26, 2006 8:18 pm

I just had this exact problem in my ae82 4age. Try swapping the vacuum lines around and make sure their all hooked up.

by **fangsport** » Sat Aug 26, 2006 9:12 pm

rwd_mayhem wrote:it wont be cooling system because it does it when its cold and when its hot.

they do it hot or cold if coolant is low

by **postfach** » Sun Aug 27, 2006 7:33 pm

check idle control valve, i had a problem similar to this in my soarer.

Toyspeed.org.nz Message Board

standard 4age idle lumpy (why?)

standard 4age idle lumpy (why?)

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