I have a 92 volvo 240 and I have an air fuel ratio gauge and noticed that when I try to accelerate it will complete
lean out to about 20 to 24 afr and the car squeaks and has no power. If I keep my foot where it is the car will eventually realize after a sec or two that its too lean and adds the right amount of fuel to around 14 to 14.7 afr. My maf sensor is good the fuel pressure is good under load and the tps is also working. I'm so confused why the car has such a massive delay to adding fuel under load. Because it has enough fuel delivery to keep 14.7afr full throttle to 6k rpm but needs time to get to that point. And it's scary when your try to merge with 60mph traffic and it now its starts to die out and lose all power