Engine stumble upon light accel
Thread Starter
Teching In
Joined: Apr 2009
Posts: 4
Likes: 0
From: Kearney
Engine stumble upon light accel Hoping someone can point me in the right direction on this. Mods in Sig for reference.
So last night I washed my car as I left the car wash my car felt sluggish. It could be a coincidence? Basically what it is doing is feels like a total turd with anything below 2/3rd throttle. As soon as I pass that point it takes off (surges with power)quickly like normal. If I smash the throttle from a stop it pulls great also. If I go part throttle it almost feels like the stall is locked up and sluggish. It does the same thing on the highway feels sluggish unless close to WOT. I checked all fuses and connections. The whole setup is new in the car also minus the transmission.
Any ideas? Also swapped TPS.
Thanks
__________________
So last night I washed my car as I left the car wash my car felt sluggish. It could be a coincidence? Basically what it is doing is feels like a total turd with anything below 2/3rd throttle. As soon as I pass that point it takes off (surges with power)quickly like normal. If I smash the throttle from a stop it pulls great also. If I go part throttle it almost feels like the stall is locked up and sluggish. It does the same thing on the highway feels sluggish unless close to WOT. I checked all fuses and connections. The whole setup is new in the car also minus the transmission.
Any ideas? Also swapped TPS.
Thanks
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TECH Addict
Joined: Aug 2005
Posts: 2,305
Likes: 126
From: Monroe,NY
Post this in the diagnostic and tuning section and you will get more replies. Sounds like when the pcm goes into closed loop(at a certain temp around 130 degrees it goes into closed loop) you have your problems. Most likely an 02 sensor problem but could be other problems.
