VAPOR LOCK
I'm experiencing what I believe is vapor lock in my 1990 E350 Class C. Happens when I climbing hills, especially when it's hot out. I can see the engine temp gauge rise and start looking for a wide p...
Forum Discussion
j-d wrote:
Does that filter look like one of the ones in this pic? Proabably the uppoer one?
...snip...T-Bird, with early TBI, did not have a Mass Air Flow Sensor. It did have an Air Charge Temp Sensor in one branch of the Intake Manifold. It's a Thermistor, and a Cold Engine caused a High Resistance, which increased the Pulse Time to the Injectors, like Choking a Cold Engine. This was happening on the road, and the car would slow down, sometimes stop, in a cloud of black smoke. So rich it couldn't keep running. Not saying this is happening to you now, but it's a condition I ran into that sapped the engine's power.
Tbird didn't have MAF, but did have a MAP sensor with its speed density system. The ACT alone is not enough to throw serious fueling issues like what you are talking about. ACT is a "modifier" for existing fuel/spark tables and can only sway things a little each way...
Irregardless, I do agree with your comments about the fuel filter and it's ability to flow air when blowing through it. It was probably gummed up pretty heavily...
