[csavaglio]

I know the aftermarket replacement senders can vary pretty wildly on what they consider calibrated, even if each brand has it's own calibration numbers. I'm going by the original sender in thinking that it's high......and I don't think the actual pressure changed.

On my '96, I had to replace what was a good working sender when I broke the body off putting the intake manifold back on. The new sender reads a about 5-10psi lower than the original, but I considered it close enough and didn't investigate further. I think I used the cheaper Valucraft one on that car.

This one's so high that when it's cold, it pegs it out and anything off idle, it's almost pegged. It makes the gauge fairly worthless.

The Delco unit is showing unavailable at the 3 different part stores in town here....Autozone, Oreillys, and Napa. The dealership wants about $60 for their replacement one, compared to about $25 for the parts store ones.

I wasn't planning on spending extra money on more sensors....I was going to exchange it or return it if I can get one that reads properly. I can ohm out the sender I have and see what it reads, but since I don't have a mechanical gauge to check it, I can't really compare it with any accuracy.

My first step will be to swap it with another Duralast, which is said to be made by Wells and is the PS220. If that one shows the same, I'll try the Valucraft one and see what it shows.

It is possible that the pressure really is that high, but it seems unlikely to me.



Chris