After the holiday, I went out and pulled the throttle body off the vehicle. I removed the IAC and cleaned it and the throttle plate with carb cleaner and a toothbrush. I also put a light lubricant on the 2 shielded bearings that the IAC shaft has. I did the ohm test on the 2 circuits of the IAC motor, and they checked good. I also verified operation of the IAC by applying battery voltage to the 2 circuits, and watching it open and close. After installing the throttle back onto the van, it started right up. I was happy. I put the engine cover/floor back on and installed the passenger seat. I went out today to make sure it was good, and it would not start again.
This time during the first revolution it nearly locked up. I want to say it hydrolocked. It did crank over though and spun freely after that. It did not start. I could smell gas, I think from the tail pipe. No matter what position I put the throttle pedal, it would not start. I was able to get it started by unplugging the fuel pump relay by the battery, cranking it until it cleared, then I hook up the relay and it starts. I drove it around for a while and got whitish steam out the tail pipe. It did go away after a few miles of driving. I did not smell the sweetness of coolant in the exhaust, so I think it is just massive amounts fuel burning up in the converter.
I am fairly sure this year of van did away with the cold start injector. Is this true? I keep thinking fuel is settling in the cylinders or a cylinder after sitting, but that sounds a little far fetched, especially after having the injectors cleaned.
Monday, December 29th, 2014 AT 5:17 PM