Continuous Memory Code 35
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Continuous Memory Code 35
1988 E350 460 EFI
This is driving me crazy!!!
No matter what I do I always get a continuous memory code 35.
In addition, the "check engine" light blinks when I am cruising down the road. No light during acceleration or decel, but just when cruising. I don't know if the code 35 has anything to do with the Check engine light or not.
Has anyone ever had a continuous memory code 35 and what did you do to fix it?
This is driving me crazy!!!
No matter what I do I always get a continuous memory code 35.
In addition, the "check engine" light blinks when I am cruising down the road. No light during acceleration or decel, but just when cruising. I don't know if the code 35 has anything to do with the Check engine light or not.
Has anyone ever had a continuous memory code 35 and what did you do to fix it?
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Well, a code 35 definition kind of depends on where you get the information.
Most point to the EVP Position Sensor. With KOEO test either "No EGR" signal (EVP output) or "RPM too low".
Alldata pinpoint test charts say either a short between VREF and Signal or an open signal return line on the EVP cable when a "continuous code 35" happens.
The Haynes Emission Control Manual list a code 35 for V8 engines as "EVAP control system", whatever that means.
However, the EVP position sensor is new. I read the resistance across it and it varies as expected when moved. I monitored the Signal off of the EVP Position Sensor when running. The Signal (voltage) is perfect. ~0.5v when closed and ~3.6 volts at 80%. I also checked all of the wiring. The VREF is 5.04 volts steady under all conditions, Signal is as explained above and Signal return is always good. I checked continuity for all wires to the computer and all is good.
I have also installed the recommended Idle Air Control valve spacer so I can adjust RPM and I set the idle at 650. Engine idles good, doesn't hesitiate or stall. Checked it several times and it is always at 650 at idle. No problems with RPM.
I still don't know what "EVAP Control System" means.
PITN, huh?
Most point to the EVP Position Sensor. With KOEO test either "No EGR" signal (EVP output) or "RPM too low".
Alldata pinpoint test charts say either a short between VREF and Signal or an open signal return line on the EVP cable when a "continuous code 35" happens.
The Haynes Emission Control Manual list a code 35 for V8 engines as "EVAP control system", whatever that means.
However, the EVP position sensor is new. I read the resistance across it and it varies as expected when moved. I monitored the Signal off of the EVP Position Sensor when running. The Signal (voltage) is perfect. ~0.5v when closed and ~3.6 volts at 80%. I also checked all of the wiring. The VREF is 5.04 volts steady under all conditions, Signal is as explained above and Signal return is always good. I checked continuity for all wires to the computer and all is good.
I have also installed the recommended Idle Air Control valve spacer so I can adjust RPM and I set the idle at 650. Engine idles good, doesn't hesitiate or stall. Checked it several times and it is always at 650 at idle. No problems with RPM.
I still don't know what "EVAP Control System" means.
PITN, huh?
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From: Smithton
EVAP control system is the charcoal canister and all it functioning parts,( hoses,soleniod, etc.). It takes fuel vapors and puts them back into the engine to be burned.
Ona side note- try filing down the 3 mounting points on your new evp sensor about 1/8 of an inch. The last three I have put on were too short and the metal rod just barely wasnt long enough to touch the egr valve when it was closed(and yes it should touch it even when its closed). It took me a long time to find that problem. I do not know if all aftermarket evp sensors are that way, but the ones I have got from O'reilly's and NAPA both were.
Good Luck
Ona side note- try filing down the 3 mounting points on your new evp sensor about 1/8 of an inch. The last three I have put on were too short and the metal rod just barely wasnt long enough to touch the egr valve when it was closed(and yes it should touch it even when its closed). It took me a long time to find that problem. I do not know if all aftermarket evp sensors are that way, but the ones I have got from O'reilly's and NAPA both were.
Good Luck
