1989 Buick Electra "engines back open loop idle" Questions

...open loop again for about 20 seconds then it went back into closed loop I am taking it back to inspection in N.J. it shows no codes no check engine lite any help would be appreciated if I fail again ...

...back working. Sometimes engine light comes on, sometimes overdrive cuts out. Truck runs great otherwise. 105k miles. I heard windshield seal gets compromised, and water gets into BCM or GEM. I also ...

...while in "open loop mode" then idle back down to ~750 rpms once the engine reaches operating temperature "closed loop mode" did you tap into the OBD 2 port and used a laptop to change the

back off and chech the cam gear marks against the marks on the head..... also check the marks on the crankshaft and make sure it is still lined up... also your #1 cylinder should be at top dead center

...back. Change your air filter and the map sensor. check for correct coolant level and replace the coolant temp. sensor. This sensor affects cold starting and idle through the ECU (open loop mode, rich ...

...back to park and it will level out, but only sometimes. I was thinking it may be the TP sensor, but when I disconnect the MAF sensor, it will run rough but not idle erratically. I'd like to ...

...open on the 22RE. Disabling the vacuum line to it will do no good. You must remove the valve body from the head and try to blow air back down through it, there should be ZERO air go through. A 22RE ...

...open loop operation to closed loop, and it then uses the O2 sensor readings to adjust the fuel. If the sensor(s) is contaminated, it will send a false reading to the computer causing this problem. I ...

back zillion times?) i can log scan, driving and see all condition during the drive before and after the 2279 (im assuming you reset it and it repeats per OBD2 protocols.) my first test are like this.

...back. first ,now how the EFI works not guessing it tries all the time to prevent stalls if it cant prevent it, it does stall. rule2, the ECU controls idle speeds at all times the ISC is the slave to ...