1994 Volvo 850 won't idle at all

RockstarEinstein · Post by **RockstarEinstein** » 31 Jan 2016, 20:16

I have a 1994 850 volvo NON turbo. I have been rehabbing it and it has 150k for miles. I had an idle issue and a friend said the code was for a Maf sensor. Replaced witha used ine from a car with 50k. Problem got worse. Now it wont idle at all. Installed new TPs, same issue. Codes are A1
143,223
A2
121
A3
411
A7
113,112,231,122

I am pulling hair teeth amd skin.
Plus there is one vacuum tube that has no home at the oil trap i believe. Any ideas?

Post by **Ozark Lee** » 01 Feb 2016, 07:08

The A2 1-2-1 is a MAF code. Try unplugging the MAF sensor and see if the idle doesn't smooth out.

For the rest of them try clearing them all and see what comes back.

...Lee

RockstarEinstein · Post by **RockstarEinstein** » 10 Feb 2016, 18:48

Thank you Lee
Further since figured out waaay more issues involving vacuum. I just posted a new topic.. HELLLLP

Post by **misha** » 11 Feb 2016, 13:04

Maf sensors are different for pre '95 and '95 and after.Was replacement identical with exactly the same Bosch numbers?
99% of no idle is because if bad or badly dirty iac valve.Bad maf will not prevent the car from idling.