man yesterday I turned on the car like I normally do to warm it up, then I drove to my friends house bout 3 miles away, when I parked the car felt a little funny, I look at the rpms and they were 1,100 normal, then they just shot down and the car started shaking! the rpm's went to 5-400 and the choke light came on, I was like WTF! it then died si I turned it back on and it did the same thing, I let it sit for a bit, then I drove it home and it drove fine, I drove it to my friends house at about 13-15 miles away and it drove beautifully, but when I left my friends house the car was bogging down so badly, I could floor the pedal and it wouldn't go! you can imagine only being able to go 35-40 on a 55 mile street, how embarrasing, it has a brand new cc quadra jet 4bbl carb, like brand brand new, i guess aftermarket, it was just put on when i bought the car, another thing thats been happening for about 3 weeks or so was the check engine light would come on only when i was going over 40 and i took my foot off the gas, then when i would put my foot back on to accelerate it would turn off, in other words it only came on when the car wasn't fed gas and decellerated.

what could be wrong with my car guys???

 

I don't know a thing about the computer controlled carb vehicles, but if it has a TPS (throttle position sensor), I'd be looking at that.

EDIT: More importantly, judging how the problem also relates to warm-up cycles, I'd be looking for any wiring resting on hot components and shorting. When I bought my '88 the TPS wires were resting on the valve cover.. the symptoms that caused were so bad the person sold me the car for $800 in otherwise VERY good cond..

 

If you'r getting a check engine light , u might want to check the codes ,and se what it gives you , sometimes the ecm might be right , lol, or atleast give u a direction in which to start looking , but yeah , check for wires at warm location, grounds , and, u might want to check your spark.....
these are the only things i can think of now

 

still have your cat? My bros. camaro did the same thing when teh cat burned down... Plugged teh exaust and you could floor it w/ no results

 

With this talk of the car not even responding to throttle position got me thinkin. While I'm on flat road, I can floor it, and it moves, even going up the hill it moves... but for some reason on my road it goes up, a steady incline not high, just long. And for some reason I go up the road, I didn't mash the pedal, but I slowly mushed it in, and that I still kept mushing it to FULL throttle... and NOTHING hardly any responce, I was going up it with the same speed as I did with part throttle!?

...But its weird, there was a time I did the same thing going up the same hill, and my car PULLED up that hill, it was awesome, I even gave out Cowboy call, Woohoo! I never felt it pull like that. So I dunno, I thought it was my sh!tty gears 2.77, or the fact maybe I was in 3rd gear... I dunno, whatcha think??

 

By the sound of your last post, it seems as if the secondaries are opening at strange moments. I'm going out on a limb that guessing when
The engine struggles to increase speed and what you are actually feeling is the secondary nozzles "crashing-in" as the engine finally reaches the speed where it pulls enough air to flow to provide the proper fuel delivery signal to primary and secondary venturii.

Now that's all a guess on my part, but I would suggest that you begin looking there.

 

well i took it to my mechnic yesterday and she said she will take a lookat it today and tell me whats up, i know it's the carb i just know it.

 

Woops, sorry bout that, my car is TPI 350, you're talkin bout a carb right? Woops.

 

Does your tranny downshift properly, cause if you're going up a hill below 2k rpms, the tranny I would think should downshift.
Coming up to college, it's the mountains, so there are some long steep hills. With my tranny I go can go WOT in OD, so I have to manually downshift, or I'll be cruising up the mountain below 2500 rpms which doesn't allow for much pulling power.

As to the original post. I'd say check out the cat if you still have one, and pull every plug wire to check for cracks. Or at nite start the car and open the hood to see if you have any blue sparks.

 

I know that your mechanic probably knows her stuff as well as any of the rest of us, but tell her everything you mentioned here, and her job will be easier.

The ECM set a "CHOKE" light for a reason. You have a newly rebuilt E4ME carb with an electric choke heater. I'm guessing the choke pulloff and thermostatic element are not adjustsed quite right, and the fact that you only drive a few minutes and shut down isn't helping the situation. The engine and carb never get a chance to warm up, and the choke may not be opening fully. The excessively rich mixture will contribute to the dieselling that you describe. Another thing to check is the idle speed solenoid adjustment, if your car has one.

Of course the TPS and mixture control solenoid have to be adjusted correctly, but the MC won't enrich the mixture enough to cause that kind of dieselling. Aside from that, both of those devices are dead as soon as you turn off the ignition. If all your trips are that short, you probably have a lot of carbon built up in the chambers as well, contributing to the dieselling problem. You EGR system never gets a chance to function, and the EVAP canister can be pretty saturated as well. Ready for a road trip?

 

happy days, I got the car back yesterday and to my surprise the mechanice told me he wasn't able to get the same symptoms! I was like oooo kkkkk , he did tweak the carb a bit though and sprayed all the wires, then he made sure non of the wires were touching any hot surfaces, then he took it on the road and drove it, he said it drove perfect and he wishes he had the money to buy it himself lol, i got it checked out for free since im cool witht he owner, she owns 3 1967 camaro's! two conv. and one hardtop, the hardtop is hod rodded, one conv. is an everyday driver, the other is a project car.

so all in all I guess it was those one time things

 

dp