Here's my car question: On my 1994 Dodge Grand Caravan LE, 2WD, 3.3L engine I cannot find the Air Charge Temperature Sensor (also known as the Intake Air Temp Sensor). So. Where is it? Or does my car not actually have one?
My car is cold start stalling. That is, it starts up great, runs great for the first mile, but once it starts warming a bit I get hesitation during acceleration and stalling at idle. Once it reaches normal operating temperature, it runs great again. These kinds of drivability problems often mean the air temp sensor is failing. But I can't find it! It's not on my Chilton Manual wiring diagram. It's not on the intake hose. I can't find it on the intake manifold. I looked all through the manual and all over the internet.
Originally it was stalling while driving at speed. So, stuff already done:
1. Replaced camshaft sensor
2. Replaced crankshaft sensor (was getting codes for these two; after these two, it only stalled at stops)
3. Replaced Fuel Filter
4. Replaced Idle Air Control Motor
5. Cleaned out Throttle Body
6. Replaced Spark Plugs
7. Replaced Spark Plug Wires
8. Found and repaired vacuum leaks
9. Replaced EGR Valve. (After this, I noticed that it only stalled during warm up)
10. Replaced Engine Coolant Temperature Sensor
11. Replaced damaged fuel pressure regulator o-ring
1. Intermittent check engine light, code 36, "air switch solenoid circut" and code 37 "Part Throttle Unlock Solenoid Driver Circuit"
2. Ignition coil replaced with known good, no change.
3. MAP sensor replaced with known good, no change.
4. Computer replaced with known good, no change.
5. Listened to fuel injectors with stethoscope, all are clicking.
6. No gas spitting out of fuel pressure regulator--diaphragm is probably fine.
7. I've got a bit of a coolant leak.
8. Fuel pressure is good.
9. Spark is good
10. Battery is good.
Other recent repairs:
-Fuel pump replaced 5 years ago
Tuesday, September 27th, 2011 AT 9:27 PM