Update please help!

[91 Plus]

OK I just ran codes on my car again....
I got code 24 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range - IAT VAT!!

Also 91 (R, M) System running lean - Fuel control
Transmission SS 1 circuit/solenoid problem - Transmissions

Do you think if the air temp was not working it would make it lean out?

 

[BlackOnBlackATX]

yes it would make it lean out. ive seen the same thing on other posts. change the air temp sensor immediately, its real cheap and you can see its only a 5 minute job. report back when youre done and let us know. good luck!

 

[rangerj]

94SHOATX,

Hold on thar Bubba Loui, you got a two digit code with a 94? Huh? Oh well, let's see if we can resolve the missery in Monroe!

The Air Charg Temperature (ACT), aka as the IAT and VAT. It sends a signal to the control module in voltage ranging from 5 volts (reference voltage or vref)on down to near 0 volts.

It signals the control module about air temperature and this information helps the control module calculate air mass, which is important in determining how much fuel to spray in to get the 14.7 to 1 fuel ratio.

An open, as in a broken connection, between the ACT and the control module results in a constant 5 volts signal to the control module. The control module thinks the air is cold.

A short to ground in the same circuit results in near 0 volts to the control module. The control module thinks the air is comfy cozy warm and fuzzy.

Extra resistance in the circuit, such as CORROSION at the CONNECTORS results in higher than normal voltage because the signal is based on voltage drop. Extra resistance, from aforementioned CORROSION on the CONNECTORS, could cause hard cold starts.

Now that you know how it works, think for a minute, then test it!!!!rangerj thumbs_u

 

[luigisho]

Rangerj,
Just to clarify, as I was thrown by the poster's chosen name before, he is currently driving a '91. The 94 burned to death. Makes for an awkward reference.

<small>[ January 27, 2003, 07:14 PM: Message edited by: luigisho ]</small>

 

[rangerj]

LUIGISHO,

I caught that in his info at the bottom of the page (post). I did have to do a double take and recheck it though.

The info is correct for the early SHOs, that is the 2 digit codes. I was pulling his chain a bit. We have had record snow falls up here, and unseasonably cold weather to boot (boot--get it).

Anyway, I think cabin fever is getting to me. I want to be out in the garage and it is too fricking cold. I think I'll move to Texas, they never, ever, get snow down there! rangerj thumbs_u