99 volvo c70 2.3l turbo idle problem

HulkC70 · Post by **HulkC70** » 19 Oct 2014, 16:55

Idle is jumping. Never dies but will continue to bounce from 500 to 1200 rpm when in neutral. I have the 99 volvo c70 2.3L htp5 speed manual transmission.

I have before unplugged the MAS and opened a vacuum line and it no longer bounced but it high speeds throttle would get shakey. If I unplug just the MAS it will bog out but I can re start then it I'll position for a minute but then bounce again.

Thank you for further advice

Post by **rspi** » 19 Oct 2014, 17:01

Codes? Could be a vacuum leak, MAF or ETM.

HulkC70 · Post by **HulkC70** » 19 Oct 2014, 17:16

Ok sensor codes, but I also had this problem before or codes came up, no vacuum leaks, MAF recently replaced cause I thought that was the problem worked for about a week then back to same.

HulkC70 · Post by **HulkC70** » 19 Oct 2014, 17:17

Exact codes are.... P137, P236, P237, P1132 .... what do u get out of these codes?

Post by **rspi** » 19 Oct 2014, 17:55

What brand MAF did you use?

HulkC70 · Post by **HulkC70** » 19 Oct 2014, 19:10

Oem replacement