Got back today and took the inake back off to see if I missed anything. Well everything was hooked up. I scanned my codes and got an 85. What exactly does that point to? I switched out that black canister that clips to the back of the intake and still no luck. Help!!!
SHO still won't start code 85
- Thread starter sho_dwn
- Start date
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projectSHO89
SHOless In St L
85 is a CANP (canister purge) circuit failure.
It should not cause a no start condition.
That is the charcoal canister that is mounted inside the fenderwell directly under the cruise control servo. It has 1 hose that just hangs down, the other hose connects to the canister purge solenoid which in turn connects to the upper intake port located between the ISC valve and the throttle body. The vent solenoid is controlled by the PCM so that the canister is purged only while the engine is running.
The little black canister is not the subject of the '85' code. For that matter, I have no idea what it actually is, but I suspect it's a small vacuum reservoir. Really don't know.... maybe someone will chime in on it.
Basics:
1. Do you have spark? Hook up a timing light a plug wire to check.
2. Do you have fuel? Check the fuel pressure at the test valve on the fuel rail. Should be around 39 psi.
Steve
89
<small>[ May 22, 2002, 12:52 PM: Message edited by: projectSHO89 ]</small>
It should not cause a no start condition.
That is the charcoal canister that is mounted inside the fenderwell directly under the cruise control servo. It has 1 hose that just hangs down, the other hose connects to the canister purge solenoid which in turn connects to the upper intake port located between the ISC valve and the throttle body. The vent solenoid is controlled by the PCM so that the canister is purged only while the engine is running.
The little black canister is not the subject of the '85' code. For that matter, I have no idea what it actually is, but I suspect it's a small vacuum reservoir. Really don't know.... maybe someone will chime in on it.
Basics:
1. Do you have spark? Hook up a timing light a plug wire to check.
2. Do you have fuel? Check the fuel pressure at the test valve on the fuel rail. Should be around 39 psi.
Steve
89
<small>[ May 22, 2002, 12:52 PM: Message edited by: projectSHO89 ]</small>
sdpatt
Sr. SHO Engr.
The 85 code indicates that the canister purge solenoid was not detected to operate. I have gotten that one before.
I had posted earlier (SHO won't start) that when I turn my key on the fuel pressure goes up to about 35-40 then the fuel pump relay clicks and I lose my pressure. This happened after replacing the IAC valve. I took my intake off again this afternoon to see if I forgot something, but everything was fine. I doubled checked the ground, etc. but still no go. Its not a spark issue, but a fuel issue. Its not making any sense to me. It cranks over fine, but no start. What would make that fuel relay click (black box under emissions panel above radiator)?
sdpatt
Sr. SHO Engr.
You should verify the grond path to the DIS module. The ground strap is attached to the upper bolt by the 15mm nut on the intake mounting bracket on the rear passenger side. If you disassembled the intake, you should also check the 12mm bracket bolts that attach the crossover tube to the front and rear intake plenums. Did you remove the DIS module from the crossover tube? Did you reapply heat sink compound and gently tighten the four mounting screws?
Did you use a lot of intake cleaner inside the intake or head ports? The engine will crank and act like it is severely flooded for several minutes of cranking if you had used enough cleaner.
Scott
Did you use a lot of intake cleaner inside the intake or head ports? The engine will crank and act like it is severely flooded for several minutes of cranking if you had used enough cleaner.
Scott
naval-avi8or
New Member
The fuel pump realy will only stay on for 2 seconds unless the car is started then the PCM will renergize the relay after the engine is started. The info below is from a trouble shooting tech manual. It is the relay disrcription and operation section.
Description and Operation
OPERATION
When the ignition switch is turned ON, the Electronic Engine Control (EEC) power relay is energized, providing power to the fuel pump relay for 1 to 2 seconds through the Powertrain Control Module (PCM) and an Inertia Fuel Shutoff (IFS) switch.
Fuel pump power is provided through the fuel pump relay contacts, if the PCM does not receive an ignition signal within approximately one second after the ignition switch is turned to the "ON" position. A timer circuit in the PCM will open the ground circuit to the fuel pump relay, causing the fuel pump relay contacts to OPEN. This action stops the power supply to the fuel pump.
When the ignition switch is turned to the "START" position, the PCM closes the ground circuit to the fuel pump relay, resuming operation of the fuel pump.
After the ignition switch is returned to the "ON" position, power to the fuel pump is supplied through the fuel pump relay.
The PCM monitors engine speed and opens the fuel pump relay ground circuit if the engine speed drops below 120 rpm.
<small>[ May 22, 2002, 03:39 PM: Message edited by: naval-avi8or ]</small>
Description and Operation
OPERATION
When the ignition switch is turned ON, the Electronic Engine Control (EEC) power relay is energized, providing power to the fuel pump relay for 1 to 2 seconds through the Powertrain Control Module (PCM) and an Inertia Fuel Shutoff (IFS) switch.
Fuel pump power is provided through the fuel pump relay contacts, if the PCM does not receive an ignition signal within approximately one second after the ignition switch is turned to the "ON" position. A timer circuit in the PCM will open the ground circuit to the fuel pump relay, causing the fuel pump relay contacts to OPEN. This action stops the power supply to the fuel pump.
When the ignition switch is turned to the "START" position, the PCM closes the ground circuit to the fuel pump relay, resuming operation of the fuel pump.
After the ignition switch is returned to the "ON" position, power to the fuel pump is supplied through the fuel pump relay.
The PCM monitors engine speed and opens the fuel pump relay ground circuit if the engine speed drops below 120 rpm.
<small>[ May 22, 2002, 03:39 PM: Message edited by: naval-avi8or ]</small>
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