I have a 2.8 1987 with a 3 speed auto. Egr delete / chip tuned.
So I believe my issue to be fuel related. The problems start with my haunting idle that I have. It usually fluctuates from about 700 rpm to 1000 rpm very steadily.
When I am driving... usually, If I have the car above 40 mphs and have my foot barely on the gas... It just cuts out for half a sec randomly... but frequently. You could reproduce the feeling if you just punch the gas and release quickly in our little fieros. If I open the throttle and step on, it doesn't stumble or cut out. This only happens with my foot is barely on the gas.
Some days the haunting idle and car cutting out event barely happens. Other days its so noticeable that I don't even want to drive it. I think this is gas related, but I just replaced the fuel pump (and fuel filter) about 8 months ago... I would hope its not bad again. If it is, its under warranty so it won't cost me a dime... well it will cost me my time.
I have a ton of new parts in the car. New distrib New Coil New Engine New Oil Pump. New Batter cables. New Stater Solinoid. New plugs and wires. New Map New IAC A bunch of new connectors.
I thought the issue might be a grounding issue so I added 2 new grounding straps and replaced the battery cables and starter solenoid for safe measure. I would be surprised if it was anything but fuel. What do you guys think?
Did the new distributer come with a new ICM? Because I had one do something similar, or was it the pickup coil? I forget, maybe you shouldn't listen to me.
And always test everything before replacing anything, there are tests that can be done that will save you just throwing parts at a problem, that I am sure of.
Steve
------------------ Technology is great when it works, and one big pain in the ass when it doesn't
Detroit iron rules all the rest are just toys.
[This message has been edited by 84fiero123 (edited 05-26-2015).]
If you have the problem at steady speed but not while accelerating, look for bad electrical contacts. TPS connector might be crusty....or one of the ICM connectors.
Is it worse on rainy days?
[This message has been edited by Gall757 (edited 05-26-2015).]
If you have the problem at steady speed but not while accelerating, look for bad electrical contacts. TPS connector might be crusty....or one of the ICM connectors.
Is it worse on rainy days?
I can't really put a rhyme or rythem to it. It has been going on for months. Even before I did my engine swap, the last motor was doing the same thing. Ill break out my volt meter and check out the TPS I guess.
I had the same issue of cutting out while driving. And it was my TPS. If i jiggled the connector at idle it would cut out. I have a barely used TPS if you want it. I also have a barely used IAC. $35 for both plus shipping. It solved my cutting out problem and my crazy idling problem and then I pulled the motor anyway to do a 3800sc swap.
If your like to buy it from me please PM me. Thanks Louis
------------------ ===Always trying to find time to work on cars=== Louis Duet Baldwin, Long Island, NY "My mind spins like helicopter blades." -G. Rossdale ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Blue" <= '85 Fiero GT 3800sc series 2 swap in progress ~~~~~~~~~~~~~~~~~~~~~ "Boo" <= '81 Delorean DMC-12 VIN #5835 Stock PRV engine Peugot 604 Intake manifold Exhaust headers Anti-3rd brake light
I had the same issue of cutting out while driving. And it was my TPS. If i jiggled the connector at idle it would cut out. I have a barely used TPS if you want it. I also have a barely used IAC. $35 for both plus shipping. It solved my cutting out problem and my crazy idling problem and then I pulled the motor anyway to do a 3800sc swap.
If your like to buy it from me please PM me. Thanks Louis
Thanks but I already have a new IAC... so I would just need a TPS. Which I can get cheaply.
Ok, the TPS was the issue I had that was causing the cutting out. It was $60 at autozone.
------------------ ===Always trying to find time to work on cars=== Louis Duet Baldwin, Long Island, NY "My mind spins like helicopter blades." -G. Rossdale ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Blue" <= '85 Fiero GT 3800sc series 2 swap in progress ~~~~~~~~~~~~~~~~~~~~~ "Boo" <= '81 Delorean DMC-12 VIN #5835 Stock PRV engine Peugot 604 Intake manifold Exhaust headers Anti-3rd brake light
Wow I just saw that! I wanted it right away. The price we pay for convenience.
Try that though. I think it will solve the cutting out.
------------------ ===Always trying to find time to work on cars=== Louis Duet Baldwin, Long Island, NY "My mind spins like helicopter blades." -G. Rossdale ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Blue" <= '85 Fiero GT 3800sc series 2 swap in progress ~~~~~~~~~~~~~~~~~~~~~ "Boo" <= '81 Delorean DMC-12 VIN #5835 Stock PRV engine Peugot 604 Intake manifold Exhaust headers Anti-3rd brake light
