02 tl-s with comptech sc being the only mod.

check engine light on
triangle with ! is on
vsa light on

car has a hesitation on light acceleration and throwing p0170 and p0171 and once in the past 2 weeks it has got stuck in 2nd gear after returning vehicle to park trans shifting fine other then that 1 time.


ALL egr system has been removed and clean , upstream o2 has been replaced (oem acura sensor). not sure where to go next. recently replaced throttle body due to bad tps.

 

Id bet you have a vacuum leak, especially with you recently replacing the TB. Vacuum leaks often cause this. I would start checking all the vacuum lines.

Other things to check is fuel pressure to make sure its getting enough.

 

I know you mentioned egr system but did you remove the egr valve it self and cleaned it ?
If its stuck open thats a problem.
Also check the pcv valve.

 

did not clean the actual valve just all the passages. if the egr valve was stuck open wouldnt this throw a egr code?

 

Try rechecking all of your previous work and then reset the CEL.

 

Make sure your gasket for the top cover on the intake manifold is on correctly. It fits both ways but only works one way. But i would still look for a vacuum leak. Get some carb cleaner and with the motor running spray it near the tb, and by vacuum lines and see if the idle changes.

 

It`s very easy to remove the egr valve and clean. Clean as you would the egr ports.

 

checked over all previous work and all appears tobe good will be checking egr valve this afternoon. did a vaccume test on all is good there , pcv valve replaced and is good.

 

egr valve is good pulled it cleaned it and it is not stuck open. not sure where to go from here.

 

Do you have OEM motor mounts?

If so, check the vac lines to the front and rear mount.

And for your trans issue, check the range select switch, make sure its adjusted correctly, if it is and it still does it, wiggle the shifter in all gears and see if the gear light on the dash flickers, if it does either the range switch needs adjustment, or is bad and needs replacement.

 

Does it smell like fuel around the car while its running?
A quick check of the fuel pressure regulator can rule out fuel leaking into the intake , By removing the vacuum tube to the regulator with the engine running and waiting about a minute
if any fuel starts to come out of the tube your Fuel pressure regulator is bad.

Test before buying parts.

 

no fuel smell and checked the fpr its not leaking. put a gauge on it and idle is 31-32 psi. changed plugs over weekend and pulled apart intake to recheck the passages all is good in there aswell. if the pump is weak wouldnt it hesitate all the time?

 

Was the oxygen sensor replaced prior to the issue your having now or after ?
Check the oxygen sensor wires they could be touching a metal part making a ground.

 

o2 was first thing replaced. will check wiring tomorrow.

 

Bump?

 

Did you ever cleaned the IACV ? Idle control valve

 

Your fuel pressure is a little low. Mitchell on demand shows a spec. of 40-46 psi at idle with the vacuum hose connected. The odd thing is that they used to list a different spec for 2000. I'm pretty sure the 40-46 spec was 02- 03 or so, but now everything from 99-03 is the same. If I remember correctly, the 2000 spec was about 5 psi lower, so there was a little bit of overlap with the later spec. I've installed a later spec regulator on my daughter's 00tl as an attempt to cure her hot restart problem. It's got to get above 70F or so on winter gas before I'll know if it helped.

 

got the issue fixed. it ended up being a bad fuel pressure gauge pressure was low.