96 R: idle not super smooth

Post by **Clemens** » 22 Mar 2017, 07:35

As it is getting warmer again I am trying to sort out various things on my rides. On my 96 R I noticed that idle isn't perfect. Within the last year I put new plugs, wires, cap and rotoe on ot (all oem) did the PCV twice, new airfilter.
I have an old O2 sensor, no codes, good even compression, a slightly leaky turbo, vacum lines that look good but haven't been replaced (will do soon) and a fuel filter of unknown age. Also, a few lifters are ticking occasionally.

What to do next besides shut up and drive?

Post by **ZionXIX** » 22 Mar 2017, 08:10

Have you cleaned the throttle body and or Mass air flow sensor?

Post by **Clemens** » 22 Mar 2017, 09:19

Throttle body? Yes, includong new seal. MAF: no! Die to lack of proper cleaner on my side of the pond.

Post by **ZionXIX** » 22 Mar 2017, 09:22

I have used brake cleaner on a non volvo vehicle while being careful not to touch the resistor filament things and then letting it air dry in the sun for a while. Use at your own risk.

Post by **kahl** » 22 Mar 2017, 15:16

I would check for fracked vacuum lines. All three of the 98 to 2000 Vs we have had cracked lines causing poor idle. Having seen brake cleaner melt plastic I would be wary of using it on the MAF sensor. Use the CRC MAF cleaner.