A few annoying problems, help!

[2gawdtsi]

Okay, lately my car has been having a few problems, here i go.

1. Car bogs under partial throttle boost, which is confusing because At WOT the car boosts fine. if it was a boost leak it would leak at WOT correct?


2. I have been hitting fuel cut sometimes while at WOT, however, it only happens in 3rd,4th, or 5th. if i floor it from a stop it wont hit fuel cut. but if i downshift or gas it it does, im guessing this is a wastegate issue?

3. Bad gas mileage which i believe is because of the Coolant Temp Sensor, a while ago i pulled the wires out of the pigtail by accident, and tried my best to put them back in, but now im throwing a code for insuffient temp for closed loop, which i believe is the cause of my bad mileage. how do i fix this?

if you have any ideas id love to hear them,
thanks in advance.


Any ideas?

 

[Patamos]

for problem 1 yes at wot the car will sit around 3000 rpm and wont budge (thats what happened to me when i made my own custom hard piping; the pipe came off) so it cant be a boost leak. i actually had the same problem and it turned out to be a clogged air filter.

for problem 3 that would be your thermostat, the thermostat says that the water temp is hot enough so it opens and the water begins circulating through your radiator too soon, keeping the engine a lot cooler longer than necessary

 

[350war]

Sounds like it could be a boost leak test it.

 

[turbomatic]

1. and 2. How much boost are you pushing? Are you running stock injectors, if so, turn the boost down so you don't hit fuel cut and get some bigger injectors and something to tune with.


3. If the CEL is on then that could very well be the cause of your bad gas mileage. Since you said you pulled the pigtail out, I would bet thats the problem. Either replace the coolant sensor or rewire in a new pigtail.