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HI,
You have got that right!
It's just like what I posted to you earlier.
"The 700 series were being produced at the same time and several parts were interchangeable despite every effort to screw things up!"
I will say that the one in his photo is different than what I see on the 240's!
It has the intake manifold of the K jet system, in that, it draws air from the underside where the nineties cars have a sideways throttle plate. So, it's a side draft manifold.
Differences yes, but it still does the same thing as in conveying air.
I looked over one of the other post you made and the statement you tech man said about a temperature sensor.
Temperature is a constant physics factor used within a "contained volume" that these instrument are built around.
So is the AMM or MAP and even a MAF (mass air flow) depending on how you want to think about the intake manifold as its getting filled up or measuring it up after the fact.
One is like a tire on the car. It holds "pressure" at a certain volume but if you drive the car the tire swells due to warmth. A colder tire shrinks its volume and the pressure changes and these are on charts!
The second one is like wetting your finger and then blowing on it with different amounts.
The finger senses the evaporation factor as more or less volume changes.
The Bosch uses a hot wire or film as a heated element, for the fixed wetness, that gets cooled at a certain rate.
A change in current flow measure is related to temperature and volume charts.
Others use a flap or moving vane with an electrical reading attached. Therefore it's more mechanical and more prone to its on issues!
This type above has taught a many of mechanic to go that way despite common sense!
Sprays were made for these and have screwed up the first two types!
Don't use them on a wire meter!
Scientist or "college boys" use lots of charts to define their environments, especially if, they're involved in thesis papers and journals! (:-)
When it comes down to the boiling pot or a term used there are two or more ways to skin a cat, patents get created, but their still using the same book of earth's laws!
What worries me is a "hired" mechanic throwing parts in, at my expense, to what he thinks is the most common problem. You have one of the above!
He get to sells a part, with a markup plus there diagnostic labor equals parts.
If along the way it was something simpler, It can be Easily be excess air from someplace, but you'll never know, if he finds it at the same time!
Your term of "just letting him have it" is not a good mind set for women to have!
I have heard of horror stories done to some men, just as easily!
You truly cannot test these meters except by switching in a know good one.
I have several from junkyards for about thirty dollars or less on sales!
If and when I ever change one of these, I swap them back and forth to prove it!
I never want to give up a good core in exchange for a rebuilt one.
A business mechanic will not interested in doing the above but you can if you want to keep the old one and exchange it in a few days.
Remember "time is money" and old cars are not a source of quick money from frugal owners.
Life's Lessons come in several price ranges!
Mechanics have payments for tools and equipment to keep up with.
The latest fad of new cars with computers and electronic dash gadgets with media portals are not what "driving" is suppose to be!
As the Tappet brothers would say, many Mechanics prefer for you to make a boat payment for them or go away!
If you shop the parts stores you can get a rebuilt for $100 or less with the same warranty. This is plug and play.
If you're keeping the car for love, having a spare can end you up at the same place with an option and a bargaining chip upon selling.
Phil
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