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2000 TL: gas pedal..very rough low idle and it sometimes stalls

 
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  • Answered by:thebesthonda
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Customer Question

2000 TL 3.2....infrequent but getting worse- when car is typically warm if I try and start it takes some gas pedal to get it to catch but then very rough low idle and it sometimes stalls....after about a minute if I can keep it going it typically goes away and idles fine. Sometimes the check engine light comes on. Dont have the code readout yet. Code readouts are multiple misfires 301,302,303,304....

 

Country: United States
Make: Acura
Model: TL
Year: 2000

Already Tried:
nothing yet-I have three of these 200o TL's and they all seem to do this at infrequent times..mine is doing alot now.

Submitted: 497 days and 5 hours ago.
Category: Acura
Value: $35
Status: CLOSED

Accepted Answer

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Expert:  thebesthonda replied 497 days and 5 hours ago.


thebesthonda : If you have any more questions or need anything please don't hesitate to ask. If the answer I send helps you, please click ACCEPT.
thebesthonda : How many miles are on your car?
Customer :

124k miles

Customer :

Usually when it does this I have to start it by giving it a little gas pedal until it catches and then rev it to about 2-3k on the tack for about 20-30 seconds...it goes back down real low to about 200-300 on tach but always goes away in minutes and than runs fine.

thebesthonda : Thank you. How long since the spark plugs were replaced, and valves adjusted? Also, has the fuel pressure regulator been replaced?
Customer :

Plus were replaced within last 20k with the oem plugs. Valves have never been adjusted and Fuel pressure regulator is original.

thebesthonda : Ok. Thank you. The valves should be adjusted every 105k. The valves on these tend to tighten and can cause a misfire. This can be checked with a scan tool easily. At warm idle, if the map sensor reading is above .88, the valves need to be adjusted. The fuel pressure regulator is a known problem on these as well and easy to replace. Also, if this car has not had an egr cleanout performed, it is due as well. Several things can cause the same misfire codes, but these are the most common.
Customer :

Thank you! Trying to eliminate some of these so tell me if this make sense-If it were the valves than wouldnt it be consistent and not infrequent- ie when warm sometimes it does it and most not?

Customer :

oops! Hit the return key by mistake. I should probably do the EGR cleanout first and if it still does this then replace the fule pressure regulator if my assumption on the valves is correct. I have also read that the main relays on these are also a contributor to hard start rough idle issues?

thebesthonda : The main relay wont cause an irregular idle. The egr and the vakves can. Keep in mind, valves change tension with heat, so yes, it could be inconsistent. Take a look at your fuel pressure regulator....it uas a painted dot on it....what color is it?
Customer :

Sorry but I tried to get back to you and the site was hung up all day yesterday "loading" but it never loaded! My pressure regulator doesnt have a dot on the top-looks like a black center in the circle of the top but doesnt look like a dot added by someone? Does that help?.

thebesthonda : Yes. The experts have been fighting with this site for weeks now....its been a real pain. Yes. That sounds like the updated regulator has been installed. You still may need to swap it out anyway....we have seen numerous issues with these.
Customer :

Thank you for your help. One last question on cleaning out the EGR valve-its just carbon buildup I'm trying to remove right? just a wire and a vacuum to catch the carbon i scrape away?

Expert TypeASE MasterTechnician
Category: Acura
Pos. Feedback: 100.0 %
Accepts: 783
Answered: 11/25/2011

Experience: 26 years experience

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