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1977 280z bogs out when accelerating.

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#1 moparmusclecars



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Posted 01 October 2016 - 07:44 AM

My 77 280z runs and idles great, until you step into it and put it under a load, than it bogs down and almost dies. Would the issue likely be the AFM? Car sat for about eight years without being ran. Cleaned fuel tank, new fuel pump, new filters, plugs, etc. Possible vacuum leaks? Any advice would be appreciated. Since the car was only sitting, is there any reason why the AFM should need to be re-set? No one has messed with it, and it was all good eight years ago.

#2 ZHoob2004



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Posted 01 October 2016 - 03:30 PM

TPS problem? It could be failing to switch to the wide throttle fueling due to corroded contacts either inside the tps or its connector. Check all your harness connections and make sure they're clean and check the tps contacts and make sure it's properly set. Could also be a problem with ignition not advancing with engine rpm, but I don't know how to troubleshoot that.

#3 jr_soliz2010



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Posted 25 January 2017 - 01:41 AM

Did you figure it out? My 75 does the exact same but with a blow through carb turbo set up. I have to let off the trottle and let the car roll up to speed then ill be able to get under heavy accel. I was told to advance the timing. Im gonna do that in the morning.

#4 NewZed


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Posted 25 January 2017 - 11:25 AM

You should start a new thread with a good title.  77 280Z has nothing to do with blow-through turbo carb.  I'm only here because I have a 76 280Z.


And guessing at things like where the timing should be set on a turbo L6 is very bad.

#5 grillhands


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Posted 25 January 2017 - 04:49 PM

I had the same problem a few years back. It was my coolant temp sensor.

#6 jr_soliz2010



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Posted 18 May 2017 - 04:28 PM

sorry my first Z wasnt really thinking. I figured out my problem. Thanks 

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