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I recetly had a nigh accident - sort of sharp-teeth animal destroyed vacuum hoses inside my wifes' 1997 ES300 during the night. I can't find *readable* vacuum schematic, what goes where - EVAP sensor, throttle body, those two hose divider. I tried to connect it my way but still getting some evap error codes (and as well some air to fuel ratio / o2 sensor enrichments errors). currently EVAP is unconnected on the bottom. Tried to connect it to the throttle and still getting CE lights. Does anyone here have a knowledge what goes where?
Your car should have a vacuum diagram on the hood, if it is missing, here you can find one.
The pictures you linked show the EVAP Charcoal Canister and a Pressure Switching Valve, as well as an EVAP Pressure Sensor near the windshield.
Make sure that everything else is connected, the codes you described may be a result of more than those lines being damaged. If connecting the system as per diagram won't help, please post the specific codes your car shows, so it will be easier to find a problem.
The blue vacuum hose coming from the charcoal canister VSV should be connected to the EVAP Pressure Switch that’s bolted to the firewall. I’m not seeing that connection in your pictures.
Your car should have a vacuum diagram on the hood, if it is missing, here you can find one.
The pictures you linked show the EVAP Charcoal Canister and a Pressure Switching Valve, as well as an EVAP Pressure Sensor near the windshield.
Make sure that everything else is connected, the codes you described may be a result of more than those lines being damaged. If connecting the system as per diagram won't help, please post the specific codes your car shows, so it will be easier to find a problem.
Hope this helps and best of luck!
Thank you, of course will do. thanks for the schematic, I still dont know which part is which... need to learn more
I know I'm also getting hiss from the brake servo, but will sort that out later, maybe the same day I\ll make the vacuum connections right
The blue vacuum hose coming from the charcoal canister VSV should be connected to the EVAP Pressure Switch that’s bolted to the firewall. I’m not seeing that connection in your pictures.
so this is Charcoal Canister VSV? pic:
EDIT: so assuming that this WAS a VSV Charcoal C. - I connected it that way - see pic below and right side.
Now, I have one connection open, I put there blue hose. Also have "empty" slot in throttle body (that I managed to close earlier as it was putting more RPM on idle) with black hose and a screw. So, if its the only one missing here, is the blue hose a fit for the throttle body instead of that black/screw one? (draw red line that might be it)?
Yes it is, it's marked as VSV for Pressure Switching Valve on the diagram below, the one linked earlier is not quite right. The Blue line goes to the Pressure Sensor, the rest go to the Canister itself, here is a Parts Catalogue that may be helpful as well.
Originally Posted by sat159p1
Now, I have one connection open, I put there blue hose. Also have "empty" slot in throttle body (that I managed to close earlier as it was putting more RPM on idle) with black hose and a screw.
Check where that hose is coming from, it looks like the line for an adjustable engine mount, but I am not sure if that car had one at all, so it is better to make sure. Refer to the Parts Catalogue as well, it may be helpful.
Thanks so much for your time and new schematic links... I think (but not sure!) its the hose I marked red on the schematic (also red on the photo, ends with blue dot on both where the plastic joiner is). Still dont know where it goes further? On the schematic it's just not connected to anytning (?)
Thanks so much for your time and new schematic links... I think (but not sure!) its the hose I marked red on the schematic (also red on the photo, ends with blue dot on both where the plastic joiner is). Still dont know where it goes further? On the schematic it's just not connected to anytning (?)
The red hose on the schematic runs to the Intake Surge Tank aka Upper Intake Plenum. There are two nipples on the driver side of the plenum.
Now just wondering where the gray hose from throttle body goes to? It disappears under throttle body on these pics and previous schematics does not have it listed. Its the one that's nearest firewall, small one, center of the pic:
I think I have this one connected, sorry
This is the one I'm talking about: the black ("fresh") temrinated hose. Actually I terminated it (it sucks air), the pin is free, but I don't know if its good or not
I think I have this one connected, sorry
This is the one I'm talking about: the black ("fresh") temrinated hose. Actually I terminated it (it sucks air), the pin is free, but I don't know if its good or not
I’ll take a picture tomorrow. From what I remember it was plugged from the factory on my 98.
97 ES300 vacuum problem / schematic needed
