lucidardor

Ok, so I've browsed the forums and can't find anyone threads about this... my car mostly runs great. But on very hard corners when applying a lot of throttle, the engine will sputter and stall - especially if the rear end slides. Does anyone else experience this issue?

billschroeder5842

You may have a fuel pressure issue. You need to check yourpressure.

84's are notorious for having fuel pressure issue issues. Most people upgrade to the 85-89 fuel pump. Bolts in quick and easy.

Tom400CFI

Does it do it when the tank is OVER 1/2 full?

lucidardor

It's only done it a few times, and I'm unsure how much gas was in the tank. But I do know that I gassed up at 7-Eleven a few weeks back, and it sputtered on acceleration until I put different gas in it - it was definitely bad gas.

But I'll look into that. Will the system throw a code if the fuel pressure is low? How about changing the fuel filter?

Tom400CFI

*No

*That is basic maintenance...should have already been done.

lucidardor

The key word there is "should!" It's probably never been changed - 70,000 miles on the odometer. But if I'm going through the hassle of taking it all apart for the filter, I'd might as well replace the pump with one for an '85 while I'm at it.

Tom400CFI

It's your money. I'd change the filter, then test w/a drive and a pressure gauge. Changing a working pump would get my goat.

lucidardor

Here's an update. Changed the filter & pump. The car idles stronger and has faster throttle response, but otherwise still stalls under hard cornering. It doesn't matter if the tank is empty or full. Does it on a full tank as well. Could it be the fuel pressure regulator? It can't be normal for a crossfire engine, can it?

Hot Rod Roy

Definitely not normal. I can keep up with the big boys in the corners with my '84! You'd better have your seat belt tight, because this thing pulls big G's! (The straights are a different story.)

lucidardor

I'll keep troubleshooting then. Maybe I'll check the fuel pressure regulator next. Let you know if I find and fix the problem.

kenmohr

put a fuel pressure gauge on it.

lucidardor

Solved.

After checking fuel pressure and troubleshooting the fuel system, I suspected the problem was either spark-related or possibly related to the power steering pump.

So, I started at the ignition system and changed the spark plugs. Problem solved. Unsure why that caused stalling only when hard cornering, but that was the solution. I think it still had the original spark plugs from the factory.

I would suggest that anyone else experiencing this same issue start by checking the ignition system, then move onto fuel - that would have saved me a lot of time. But my fuel filter was the original and needed replaced anyway, and now I know the pump is good, because it's new. So it wasn't entirely wasted time.

lucidardor

The filter I'm referring to is under the passenger side of the car.

I replaced the strainer in the tank when I did the fuel pump.

But the problem wasn't fuel-related at all. The new spark plugs completely resolved my problem. I'm guessing the spark was weak, and the extra friction from the tires while cornering was enough to stall the engine.

Hot Rod Roy

Your words confuse me. It sounds like you're talking about the filter "sock" in the fuel tank. Did you also replace the filter that's mounted under the car, behind the RF wheel, or just the filter in the fuel tank?

(There are also micro-filters inside the fuel injectors, but those are not likely to be your problem.)