When a car warms up it enters closed loop state. This is when the computer uses the sensor inputs to adjust air/fuel ratios.
MAF - mass air flow sensor - These can be cleaned.
Oxygen sensor - Usually when they fail the mixture gets richer. I think yours is getting leaner
Camshaft and crankshaft position sensors - They can be affected by heat when one is failing. They provide the computer with timing information
An obd tool that reads real time data would help narrow down the problem. You can get an elm327 usb to obd connector on ebay for $10. Then get free software to read the car computer with your computer.
First off, is a check engine lite on,if so do you know the codes?It does have a cam sensor,the cam sensor malfunction gives a code reading,in general fuel probs do not give a code this is done bymanually checking fuel press ect....the module does give specific codes as well...I have seen a cam sensor give the prob. you list, BUT TEST BEFORE YOU BUY,you can get your own codes from the a.l.d.l connector,under dash...take a coated jumper wire and push one end into the g .circuit ,the other into the b terminal and watch the lite flashig in the dash,,ie, 2 flashes...pause then 4 flashes is an example....wilf
1
152 views
Usually answered in minutes!
×