Well, this is a continuation of the post from yesterday, it wasn't a fuse problem or loss of power to ECU at all. It has the B230 (or 2330?) 4-cylinder FI engine, BTW. To describe a little better what the car is doing, it seems to be getting around 2 miles to the gallon. Even before the acelleration problem developed, it had started to eat gas. it will run fine when in park or neutral,has normal acceleration. When you drive the car, it will take off with normal pwer from a stop, but right after it shifts into third, the engine just shuts itself down to idle speed, even though you continue pressing the gas pedal. You kind of get thrown forward in teh seat! To get going again, you have to let off the gas completely, then you have control of the engine speed again. I was told it was a bad AMM sensor. However, it doesn't look like that is the problem. HOwever, like I said, the check engine light is NOT on...and when I read the codes for both 2 and 6 (its the Bosch LH2.4 system) I got 1-1-1 on both. No codes are being set, even though it has this severe drivability problem. To test if the ECU was picking up faults from the AMM sensor, I disconnected it. Sure enough I then got a 1-2-1 code. SO the ECU is telling me that the sensors are good. I noticed that the big flex duct between the air intake and the AMM has gotten almost kinked off....I thought Aha! Its getting starved for air! but when I shortened up the duct and repositioned it so it is not kinked anymore, I still have same problem. I checked the air filter, it looks fine. So what could it be.... fuel pressure? fuel pump? The oil and tranny fluid are fine.
- posted
18 years ago