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11-12-2012, 10:33 PM
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#1 |
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3" Exhaust
Join Date: Jun 2012
Location: az
Posts: 50
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7mgte stumble HELP
i need your help again. i fixed the tps wiring and the tps is working perfect (as you will see in the video it shows how much throttle is open in volts).
itis a bone stock 1987 7mgte motor. there is a hesitation, stumble, hiccup at around 2500 rpm. it is running very rich and getting horriable milage. if it is a cold motor it runs good for about 40 seconds then this stumble starts. i have an inline walbro and a intank OE supra pump. while driving it can rev above the biccup but if the throttle is barely cracked it accels like i am flooring it. when the speed catches up to how much the throttle is open it acts like there is a dead spot. and the throttle is like a switch between on or off. if i rev it up and hold it at like 4k and let it off it revs down and almost dies or dies. most i have boosted on that crap gauge is 4psi. io have great vacuum. video HELP http://www.youtube.com/watch?v=vOdnP...ature=youtu.be |
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11-12-2012, 11:06 PM
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#2 |
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3" Exhaust
Join Date: Jun 2012
Location: az
Posts: 50
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just compression tested it.
#1-145 2-145 3-145 4-145 5-145 6-135 also i dont have the factory boost sending unit hooked up. the wiring showed that it went to the gauge only. what rpm does the stock trim start to boost? when does the fuel up vsv open? it does not matter if the fpr has vac or not. |
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11-12-2012, 11:22 PM
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#3 |
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3" Exhaust
Join Date: Jun 2012
Location: az
Posts: 50
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plugs gaped at .028
 
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11-13-2012, 12:19 AM
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#4 |
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3" Exhaust
Join Date: Jun 2012
Location: az
Posts: 50
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scratching my head
Last edited by ccguy; 11-13-2012 at 03:56 AM. |
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11-15-2012, 01:34 AM
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#5 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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No diagnostic codes stored in the ECU? The CEL doesn't even come on for most of them so if you haven't checked then do so. There's a how to in the MKIII FAQ section.
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11-16-2012, 02:53 AM
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#6 |
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3" Exhaust
Join Date: Jun 2012
Location: az
Posts: 50
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no cel and nothing stored. so????
i am thinking it is a boost leak but cant find it. do you think the video resembles a boost leak? when i turn the steering wheel it does not idle up. the ps pressure switch is working and the lines are clear. Last edited by ccguy; 11-17-2012 at 01:18 AM. |
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12-05-2012, 11:45 PM
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#7 |
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Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
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