Intermittant High Idle (again)

[Riff Raff]

Correct Riff, it does seem to be a common problem. I had even mentioned it to the shop the first time I brought it in. But whats your point?

My point is any other VX owner who is, has, or will experience simular high-rev symptoms may want to investigate their PS system as a possible culprit. Thanx for the feedback, as your experiences help all of us maintain our VX's in proper running condition and help solve the mystery sometimes with mechanical gremlins.

[etlsport]

some baseline numbers

Ambient Temperature 82ºF
Relative Humidity 87%
Time without running - 10Hours

Initial startup, no AC
Water Temp - 83
RPM - 960-1000
Throttle Pos - 0
Air/Fuel Ratio - 15.2
HP - 15.3
Voltage - 13.8
Intake Temp - 82
Gallons/Hr - 0.8
IGN - 16
Engine Load - 6
Closed Loop
Manifold Pressure - 4.9

Running time approx 90 seconds, AC full blast
Water Temp - 112ºF
RPM - 975-990
Throttle Pos - 0
Air/Fuel Ratio - 14.7
HP - 13.9
Voltage - 13.4-13.6
Intake Temp - 85
Gallons/Hr - 0.5
IGN - 16-17
Engine Load - 7
Closed Loop
Manifold Pressure - 5.4

Running Time approx 3 minutes, A/C off
Water Temp - 155
RPM - 940-950
Throttle Pos - 0
Air/Fuel Ratio - 14.7
HP - 10.2
Voltage - 13.8
Intake Temp - 105ºF
Gallons/Hr - 0.62
IGN - 16
Engine Load - 5
Closed Loop
Manifold Pressure - 4.4

[WormGod]

Considering ANY car with power steering will have idle flutter sitting idle while turning the wheel, I don't know that I would be TOO concerned, but ya, that makes sense.

At least you have it narrowed down. Now start small and work your way through the system for possible culprits.

Let the fun begin!

[etlsport]

'nother set of numbers, this time ambient temperature 90ºF after driving for approx 30 minutes in light city traffic (never broke 40mph, never stopped for more than 30 sec at a time)

Idle while in Drive, AC full blast

Water Temp - 184ºF
RPM - 775
Throttle Pos - 0
Air/Fuel Ratio - 14.7
HP - 12.8
Voltage - 12.8
Intake Temp - 155
Gallons/Hr - .76
IGN - 18
Engine Load - 6
Closed Loop
Manifold Pressure - 6.6


Idle while in Drive, AC off

Water Temp - 191ºF
RPM - 785
Throttle Pos - 0
Air/Fuel Ratio - 14.7
HP - 10.4
Voltage - 13.7
Intake Temp - 159
Gallons/Hr - .63
IGN - 18
Engine Load - 5
Closed Loop
Manifold Pressure - 5.4

Idle while in neutral, AC off

Water Temp - 190ºF
RPM - 858
Throttle Pos - 0
Air/Fuel Ratio - 14.7
HP - 7.8
Voltage - 13.7
Intake Temp - 163
Gallons/Hr - ??
IGN - 16
Engine Load - 3
Closed Loop
Manifold Pressure - 3.9