Member
Any ever get these two? I don't want to throw a bunch of parts at it. 02 sensors a good guess?
Vortech blown stage 2+ S52 with a Nick G tune.
TIA
'98 RMS stage 2+++++(491whp/390tq VAC cams, CES Cutring-9:1, Built blower, Meth etc)
'09 Saab 9-5 Combi 5mt 1 of 1(Built Motor, Brembos, LSD, the works!)
'22 Cadillac CT4-V BlackWing 6mt
'22 Cadillac CT4 2.0T Sport AWD (wife's)
Luchador
P0300 is generally reserved for random misfire or multiple cylinders misfiring. P0400 is EGR flow related. An EGR issue can cause a misfire for sure so it makes sense.
An 02 sensor is most likely not causing this issue. Make sure your EGR connection is not leaking and the valve itself is not clogged.
Last edited by wazzu70; 08-18-2017 at 06:24 PM.
u owe my mule an apology
There is no egr valve on an s52 so one may find it difficult to unclog.
86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
best time 9.06 @ 151.8 mph, best 60 foot 1.30
Luchador
Good point! I have no idea since I have never worked on one.
What is the definition of P0400?
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