March 20, 200818 yr (ed note posted 2 days later) ' UH WAIT, WAIT. It's the "air bypass" solenoid I unplugged. I couldn't see in the dark. Totally different issue. Still runs much better with it unplugged. Totally different issue, I hope this gets buried. Thanks NIpper, I saw the charat in the Haynes. Thats plug on the temp sensor is impossible to get to. Cracked some small hoses trying. Slinking away hoping not to be noticed. (end ed.) I think I want to play around with the collant temp sensor feedback to the ECU. I read that that a cold CTSensor has 2.8k ohms. Does anyone know what the hot is supposed to be? If I put a fairly large reisistor in parallel with the circuit, it will lower the cold resistance proportionally more than it lowers the hot resistance, kind of compressing the curve. Would this lean out the cold mix? The 97 2.2 Legato 153k runs too rich when cold, but perfectly when warm, except for a kind of hard idle. I've checked all other things. My feeling is that at this engine at 153k has lowered compresssion and doesn't need all that gas when cold. I assume the cold start mix is a baseline and not mixed from the MAF, because there is no air flow when stopped. Anybody have a done deal to share on this? (ed note --------- mpergielelmhurstil97legato99forester
March 20, 200818 yr 212F 176 ohms 194 240 176 332 158 458 140 668 122 672 112 1182 104 1458 95 1800 86 2238 76 2795 68 3520 58 4450 50 5670 40 7280 32 6420 28 move to florida.
March 20, 200818 yr Author 212F 176 ohms194 240 176 332 158 458 140 668 122 672 112 1182 104 1458 95 1800 86 2238 76 2795 68 3520 58 4450 50 5670 40 7280 32 6420 28 move to florida. Har. Thanks much. I can work from there. (ed.: next day) This morning it was snowing (about 32F) so I decided to take the Legato and didn't want to smell that rich gas at all so I put a jumper across the Coolantempsensor and it started and ran great, idled easily (used to rumble). At the first stop, it threw a CEL, so more fix is required. I charted the numbers and got a curve, so I think I may be able to tune this with that parallel resistor, but first I have to measure the sensor hot, when I get home, and the last thing I want to do immediately is dig under a hot hood.
March 22, 200818 yr Thanks for the reference Nipper. I noticed that the resistance readings for 40 and 32 degrees seem to be transposed. Are they really correct?
March 22, 200818 yr Thanks for the reference Nipper. I noticed that the resistance readings for 40 and 32 degrees seem to be transposed. Are they really correct? Get the book and find out (yes they are, my oops) nipper
March 23, 200818 yr Author Get the book and find out (yes they are, my oops) nipper UH WAIT, WAIT. It's the "air bypass" solenoid I unplugged. I couldn't see in the dark. Totally different issue. Still runs much better with it unplugged. Totally different issue, I hope this gets buried. Thanks NIpper, I saw the charat in the Haynes. Thats plug on the temp sensor is impossible to get to. Cracked some small hoses trying. Slinking away hoping not to be noticed.
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