My car today was boosting real slow and wouldnt get to 11psi till red line. Real lazy like and not hitting hard. Last night was pulling hard to 15psi and fun. What would cause this to happen.
My car today was boosting real slow and wouldnt get to 11psi till red line. Real lazy like and not hitting hard. Last night was pulling hard to 15psi and fun. What would cause this to happen.
Please share the details of your car. Are you running stock boost control solenoid or a boost controller, and are you running a stock blow off valve or an aftermarket?Originally Posted by jackerman
That sounds like a boost leak, either from a loose clamp or a leaky blow off valve. Its also possible that if you are running the factory boost control solenoid, something could be up with that.
Ian Adams Function>Form 1990 shadow scrapped, too rusty:( 1991 Spirit R/T Scrapped, parts sold:( 1989 Turbo Caravan Daily beater with built-[I]ish [/I]engine slowly evolving into weekend turbo beater.
Sorry for lack of info i have the adjustable wastegate from fwd xspower blow off valve and a xs boost controller. It is building boost so slow its depressing. Funny a month ago it would spool to 20 then creep to 24 and know i cant even get to 15 lol. I dont understand
Clogged cat? When I bought my car it had a hard time hitting 5psi of boost until I shimmed the wastegate actuator then it would hit 7psi but not until you got over 5000RPM. beat myself up trying to figured it out with this being my first turbo car. Finally someone suggested unbolting the downpipe off the swingvalve. Sure enough as soon as the downpipe was loose, first hit of the gas I was in overboost by 3500RPM. Removed the cat and had to reset PCM. Now it hits 10psi on stock ECM by 3500RPM all day every day.
I had same problem 2 years ago. My cat is hollowed out.
Pressure test and look for boost leaks and hope your compressor wheel didn't eat something
Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56
Another possibility could be that the timing belt jumped a tooth or two.
Ill be checking for boost leak and timing but not today so hot my god. Doing timing chain on cobalt which sucks so glad my mini mopar is easy
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