Hello , my 95 f-150 with a 5.0 SEFI mass air and an automatic transmission keeps throwing a check engine light so I scanned the codes and came up with code #332 (insufficient EGR flow). I thought the problem might be due to carbon build up in the EGR and upper intake so I cleaned everything related to the EGR and the hole thats in the intake.

Well I put everything back together and reset the computer and I'm still getting the CEL with the same code. Does anybody know if there is sensor or something that could be causing this

 

Check the EGR pipe for any cracks or leaks. Probably a malfunctioning EGR.

I would do a carbon cleaning to see if that helps any. Get either the GM "Top End Cleaner" or the Seafoam Motor Tune-Up usually available from Napa. It is just about $4 - $6.

1/3 in fuel tank, 1/3 in brake booster vacuum hose (while engine running), 1/3 in oil crankcase.

 

Thanks Slade , yeah I've already de-carbed the engine. There was quite a bit of carbon build up in the EGR passage ways. So you think the EGR went south on me. Thanks in advance