- This topic has 19 replies, 7 voices, and was last updated 4 years, 3 months ago by .
-
Topic
-
This car has the B18A1 engine with 198,000 miles. It is all stock and burns some oil. It will start and run ok until the normal operating temperature is reached then it acts like an unruly teenager or a spoiled brat 2 year old. After sitting at a red light for a couple of minutes the car wants to stumble and stall instead of accelerating normally. If I manipulate the gas pedal just right I can prevent the car from stalling and proceed down the road. I checked the fuel pressure and it read 30 PSI when the key is turned on and also when it idles. When I open the throttle the fuel pressure rises to 40 PSI. When I disconnect the vacuum line to the fuel pressure regulator the fuel pressure also rises to 40 PSI. I removed the throttle body and cleaned it with carburetor cleaner and reinstalled. I sprayed carb cleaner all around the vacuum lines, intake manifold gasket and throttle body gasket but found no leaks. I measured the throttle position sensor with an ohmmeter while opening the throttle plate slowly. It was linear throughout its range with no dead spots. I removed the idle air control valve and cleaned the dirty screen with carb cleaner and then reinstalled. I opened the fast idle thermo valve and adjusted the inner washer fully clockwise and resealed. Then I bled the cooling system. I checked to see if there were any codes stored in the computer but found none. What should I check next?
- You must be logged in to reply to this topic.