Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

My 86 Trans Am fuel injected 305 is a beast but after hard driving I come to a slow stop and it will stall either while stopped or stopping. It starts right back up tho and never occurs any other time. New plugs dist rotor and module. 117 k

share|improve this question

closed as too broad by DucatiKiller, Bob Cross Dec 12 '15 at 16:05

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

Which 305 does this have, the normal, HO, or SPFI? – Pᴀᴜʟsᴛᴇʀ2 Jun 1 '14 at 23:56
Normal I believe – user5167 Jun 2 '14 at 2:12
If it's fuel injected, it's not the "normal" (I don't remember seeing that the first time I read this), it would be Sequential Port Fuel Injection (SPFI). Was thinking if it was carbureted, it might have a problem with fuel pressure or carb bowl not getting refilled correctly. This is definitely a fuel issue. Your fuel pump may be going bad, where it's becoming too warm and dropping fuel pressure after the driving. You can check this with a fuel pressure gauge on the engine while driving. You need to tape the gauge where you can see it while driving, though, outside of the engine cabin. – Pᴀᴜʟsᴛᴇʀ2 Jun 2 '14 at 10:24
I plan on sending it to a shop to check that. In the mean time could it be low idle? Since prev owner took compressor off the belt ot may be having issues. I will try and turn it up today and see – user5167 Jun 3 '14 at 13:52
If you are talking about the A/C compressor, there shouldn't be any issue with idle or how it runs, as long as all the other accessories are still in place on the serpentine belt (water pump and alternator), but in order to do that, it would have to have an "idler pulley" put in place to replace it. If you are talking about the smog pump, this should not cause you any issues with idle either. All it does it pumps air into the exhaust to ensure the catalytic convertor to heat up faster right after startup to help it not become plugged. – Pᴀᴜʟsᴛᴇʀ2 Jun 3 '14 at 14:01

Browse other questions tagged or ask your own question.