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-   -   Starts at high idle (https://www.zdriver.com/forums/280zx-performance-technical-79/starts-high-idle-23637/)

CraigS Aug 24, 2007 09:04 AM

Starts at high idle
 
Hey, I'm getting so sick of my car so please help out if you can.

The car in a cold start, starts really rough and then idles at 1500 untill it slowly warms up and idles down. Right after start up, if you press on the peddle it will bog down then rev up. What could cause this? I'm so sick of my car running like shit.

hoov100 Aug 24, 2007 09:06 AM

checked your temp senders?

CraigS Aug 24, 2007 09:07 AM

Its a 79 so i dont think it has the CHTS.

NismoPick Aug 24, 2007 11:57 AM


Originally Posted by CraigS
What could cause this?

Air regulator, timing, mis-adjusted idle screw, vacuum leak on the intake manifold or major vac lines, AFM....

SHADY280 Aug 24, 2007 08:26 PM

that sounds like almost perfect z cold start to me, if only mine would be that smooth. maybe cause a took out all my cold start stuff.

Heat Rave R Aug 25, 2007 12:33 AM


Originally Posted by CraigS
Hey, I'm getting so sick of my car so please help out if you can.

The car in a cold start, starts really rough and then idles at 1500 untill it slowly warms up and idles down. Right after start up, if you press on the peddle it will bog down then rev up. What could cause this? I'm so sick of my car running like shit.

Hm, that sounds almost exactly what's going on with mine ever since I did the Z31T ECU/MAF conversion. Doesn't happen all the time to me though, but mainly when it's a cold start.

In my case, if it is a vacuum leak, I haven't seen anything out of place.

z-hag Aug 25, 2007 02:57 PM

i have found my z31 turbos liked to warm up for a few minutes before takeoff---the NA only wanted her oil prwessure to come up before going anywhere....:unibrow:


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