RPM pulses while driving

[brrrrr]

Hi folks. As the title says.

2001 S60 T5 with 372K Kilometers. Got it for almost nothing due to very bad power steering leak. But it had more issues after fixing the leak. In short, I've invested some $$ into it and it is really fun to drive. I've done all the maintenance on it except for the wheel alignment so I'm a little attached to it now and making my other charriot jealous.

I don't have the pulsing RPMs when in idle. Cruise control is working. I have no CEL but yellow triangle is on. I got my DICE last week and it is telling me ECM-9150 and ECM-902A. The pulsing does not happen all the time but when it happens, 5th gear and RPM between 1500 and 1800 and about 200-300 RPMs difference.

Is this still an ETM issue? Will cleaning the ETM and replacing the TPS work on this?

Thanks.

[RickHaleParker]

ECM-9150 and ECM-902A

Try cleaning the electrical connector of the Electronic Throttle Module (ETM).
ECM-902A gets set when the Engine Control Module (ECM) loses the signal from the Electronic Throttle Module.

[brrrrr]

Will try to do that tomorrow.

Thanks.