|
|
On a related subject, one might do the same thing with fuel pumps - you know the fuel pressure - why not hook it to an alarm if it drops below a certain value. Does anyone know with any accuracy how fuel pumps fail? I doubt they fail catastrophically. I suspect they fail by degrees (probably very gradually as the poorly maintained filter clogs up).
I went through this scenario a few years ago on my 88 Chevrolet p/u with EFI. The engine warning light would come on when climbing grades. Also, power would drop off significantly. When reading codes it indicated too lean a/f mixture. (I assume this was due to very low fuel pressure). Things returned to normal once the new fuel pump was installed. So, my guess is that the fuel pressure would begin dropping, along with power, and exhaust temps would rise. Pulling back on the throttle should help some.
I'm sure there are other ways for a fuel pump to fail (lock-up), but this is my only experience with an electric fuel pump failure.
Mark S.
|
|