4g61t.org

car drives fine for a few days, and then all of a sudden will not rev past 2000rpm, stutters, has problems idleing, if i let it sit for awhile its fine, sometimes i have to wait a few hours. it only happens when i ve been driving the car for awhile, and then shut it off, when i goto to restart it has these symptoms, and does not stop untill i have let the car sit for awhile.

since the symptoms are intermittent, maybe igniter or coil pack, somthing on the throttle body, or the CAS, maf? ecu? im in the dark, anyone have this problem?

this is a stock 4g63t motor.

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White 89 colt GT Turbo
tuxedo 91 1GA TSI auto
Silver 91 previa
Silver 2006 G35 6spd Sport sedan F.S.

Always smart to check the ECU first. Open it up to see if any caps leaked, and even then borrow a working ecu and try it out with the new one.

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Current:

Hunting for a Miata

Past:

92 200E 1.5L Hatch
92 TSi AWD 6/4
89 Colt GT Turbo

i'd check the MAF next!

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96 Lancer Stationwagon - 4G61T swap (rebuilt) (4g67 head, 4g63 intake mani), 390cc's, ported exhaust mani/with 2.5" custom d/pipe, TD04-13g (ported), Greddy Emanage (Gold Edition), VR4 18x12x3 IC with custom piping/hose, SR-20 (Silvia) Recirc BOV, Walbro 255lph pump, custom 2.25" press bent de-cat exhaust, ACT 2100 (4g67 g/box), front EVO II brake/booster upgrade

I would doubt if it was the MAF...the transistor pack is notoirous for those sort of simptoms and easy to check...

Agreed.

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LC '01 Accent GSI - Silver
MC '07 Accent GSR - Midnight Gray
C52A '91 Colt 4G64DOHC N/A Lots of Mods - White