drlcs2b

So if I do go ahead and get a fuel injection service wouldn't that tell me if I have any leaky injectors, fuel pressure issues, etc.??

TLer trash

If you use the motorvac system as directed, you take pressure readings, and presumably would notice the pressure drop of a leaky injector. If you're having it done at a quickee lube, don't count on anything. Even at the dealerships, machine flush services are often done by the most inexperienced techs. Yeah, right.... "techs".

TLer trash

I've got my daughter's car in today for a lof, and tire swap. I had it running outside to warm up the oil with a half can of seafoam in the oil. I got delayed, and it turned into 45 minutes. Now I know what she's talking about! The car was barely running, knocking loudly, cel flashing, etc. I nursed it into the shop thinking it was going to blow up, while cursing seafoam. After changing the oil, the car cooled down, and no problem. (other than the transmission taking a shit while idling in the parking lot)
What I'm getting at is this happened with the car running and the hood up. It's even worse with an engine off hot soak. I did have a scan tool on while this was happening, and the temp was around 195F. Hopefully I'll get to try the aftermarket fuel regulator that I got recently.

jeflor3434

I have the same problem, along with very bad gas milage. Could you estimate what 6 fuel injectors + approx hrs labor would be? Bottom line: How much am i lookin at to fix it??

victus1

This is not a fuel injector problem. This is a problem that causes the fuel (with winter additives) to boil because of issues with the fuel regulator and ECU. You shouldn't be having this problem this time of year since there shouldn't be any winter gas additives still in use. Perhaps your problem is something else that needs proper diagnosis. If it's very bad gas mileage, I would consider checking the 2 oxygen sensors to ensure they are working within their spec range.

loo1995

Am having this issue with my 99 Acura TL. My Acura service advisor sent an email stating: "The issue occurs when the fuel boils over and turns into vapor within the fuel lines and rail. It is an issue related to winter grade gasoline which reacts different with the TL's. Acura has a remedy for the 2000-2001 models which will include a replacement computer that will work in conjunction with a higher rated fuel pressure(higher fuel pressure will raise boiling point of fuel) regulator."

We replaced the computer in our 99 TL and switched to Chevron gas, but the issue was not resolved.

Does anyone have a solution to resolving this issue? My advisor also suggested using either Union 76 or Shell gas.

Thanks for any suggestions!!

TLer trash

You didn't say if they changed the regulator. Was the computer changed as part of the tsb, or for some other reason? If you can get fuel without ethanol, that helps.

loo1995

if you find a solution for the 99 TL, pls let me know................thx

closetprisoner

Try this.. don't use the vacuum on the FPR.. plug it up.. work for me.. took me months to figure this out that it was my problem all along, I thought it was hot soak at first but then i questioned.. why it never happen before and just now given misfire code and stall at hot start.

I try different gas station, different octane, valve adjustment, carbon and EGR cleaning, change the plugs and swap out some coils, check fuel pressure (within specs), none of these solve the problem.. UNTIL....

Rmkpower1

I was having the exact described issues in this thread 2000 TL we live in littleton Colorado they use crap winter blend fuel. I tried your trick per the picture plugging the vacuum line it has worked perfect ever since thanks so much!! Simple one minute fix....

Rmkpower1

Quick note for the above picture that Closet Prisoner posted the location of that vacuum line is drivers side rear of engine. And great job by Closet Prisoner to post that repair.

3.2TLc

Wecome Rmkpower1 !!!
Keep us posted on plugging the FPR and any other progress with the "heat soak" issue.

mikejoyce34

am trying this now, will update in 10 min

mikejoyce34

wel f@#k me! waited 10 min and she fired right up. its fairly cool out at the moment but it was running for at least 45 min prior to me getting home and i ran it hard right before i parked it to get some more heat (because its cool out) tomorrow will be warm, if theres no update from me then that means it still works

mikejoyce34

just did some research, if this is the problem there's likely a small rupture in the regulator diaphragm and some fuel may start coming out of the vacuum port on the fuel reg. fire hazard! looks like if this is working, time for a new fpr. 200$ at acura (toronto)

TLer trash

^^On our cars, it's not the diaphragm failing that's the problem, it's that the increased pressure on the updated regulator increases the boiling point of the fuel. If you don't have fuel leaking out the vacuum port of the fpr, the diaphragm is intact. If you decide to replace it, get one from rock auto for about $80. Just get one for an 03 tl to make sure you get the higher pressure one.

mikejoyce34

Does this mean that my car has already had "the ecu/regulator" fix?

01acls

https://acurazine.com/forums/problem.../#post15404491

Guys read this thread.

mikejoyce34

just called acura toronto my car has stock original ecu and falls into the tsb vin bracket. so if i replace with 01 fpr is this going to be an issue, or do i justreset the ecu? using the clock fuse method?

mikejoyce34

sorry meant to say replace with 03 fpr my car is an 01 350k on it

TLer trash

^^That's what I did to avoid any confusion. If you look it up for a 2000 tl, you'll see 2 different part numbers. One is the older, lower pressure unit; the other is the replacement, higher pressure one. If you look it up for an 03 tl only one is shown. This is through acura. Some aftermarket companies only list one part for 00-03. The other thing I find odd is that my online service info lists the same pressure spec for 00-03 as well. It used to list a lower pressure for 00 than 03. I don't remember if the split was in 01, or 02, but it was definitely different.

01acls

https://acurazine.com/forums/problem.../#post15404491

Gentlemen, please read the above thread by clicking on it.

mikejoyce34

That isn't ansewering MY question, 03 fpr on o1,nonupgraded ecu
Will it work? Clear answer,.

01acls

No, as listed in the TSB 01-001. You need the newer ECU that goes with it.

mikejoyce34

Then we have a wee little problem a: i got an 03 fpr in my hand b: ecu no longer available (from acura /according to service and parts dept) soooo? Anyone wanna buy an 03 fpr, new in box? Paid 214$ +tax about 5 hours ago. Maybe acura can reflash my ecu?

01acls

Did you not see the fix to your Heat Soak prob in the thread?

mikejoyce34

Something about evap sys, and selinoids, idk if that's my problem or not. I do know that removing vacuum line solved my problem, so I assume it is fpr related. Also my cls has 350k on it and im just now finding out that my tranny is a ticking time bomb, i think I will sell this car now before it literally blows up on me.

01acls

Ok sorry I bothered you then.

I find it funny that people keep doing the same things and expect a different result. What's even funnier than that is the same people giving the same advice and expecting a different result.

TLer trash

I don't think you bothered him, you probably just confused him more. If the fix is in the thread(s) you referenced, what is it? It's definitely not an o2 sensor; that was one of the first poster's attempts that didn't work. At least one poster cured the problem with a main/efi relay. Six new injectors fixed another one. Replacing the battery cured another. Four people got results by raising the fuel pressure; three (including the person you were responding to) by disconnecting the vacuum line to the fuel pressure regulator, and myself by replacing it with it with one that matched the hot restart tsb's specs.
Why do you think the updated fpr can't be used without the ecm? I can all but guarantee you that the only reason is emission certification. As I explained in yet another thread related to this, the specs actually overlap between the old spec fpr and the new one. Disconnecting the vacuum line on the old spec. fpr puts you close to the spec on the updated one.
To me it's a no brainer. If disconnecting the vacuum line cures your problem, either leave it disconnected or replace the fpr with the updated one.

mikejoyce34

Thank you for the concise and clear answer to my question, and yes the previous post you refer to did in fact have me a bit confused. I've also decided that I'm going to dump some $$ into this car, because when the tranny does go, I'll get an 03 cls with a 6 speed and have a bunch of new(ish) parts for it!

01acls

Above are the parts that fix my heat soak symtoms. For the record my 2000 tl is listed on the TSB 01-001. I did not do the upgrade to the new PCM/FPR bc it would of cost about $1500.<br/>$22.79 part opional... cheap, so I replaced it.

01acls

Above are the parts that fix my heat soak symtoms. For the record my 2000 tl is listed on the TSB 01-001. I did not do the upgrade to the new PCM/FPR bc it would of cost about $1500.<br/>$22.79 part opional... cheap, so I replaced it.

01acls

BTW: Unplugging the vacuum line at the FPG did not work for me.

I also reinstalled the engine cover and it's starting fine all the time.

01acls

Sorry for the confusion guys.

The reason why I don't think the updated FPR/black dot FPR can't be used with out the updated PCM is because in the TSB 01-0001 it clearly states they are a matched pair. Who am I to question the Acura engineers. I try to give facts, I don't like guessing.

If you guys want to experiment, more power to you. And thanks for taking the risks. The only thing I have to say about that is, what are the long term effects? Nobody knows... time will tell. In general it's not a good idea to be experiment with fuel related components... IMO.

mikejoyce34

I called my local acura dealer, service guy said he can't explain why fpr needs to be included with ecu, except perhaps ecu is seperate issue, as in fpr solves one aspect of problem while ecu solves another, said ecu has no way to know what fuel press is available at any time, that ecu adjusts injector pulse to lean/rich mixture and adjust spark aswell but has no control over and Therefore no knowledge of pressure. "fp" is vacuum controlled. Also since fp changes slightly due to many variables that in all likelihood the difference between the 2 is marginal. He went on to say (off record so to speak) that fpr should be fine if that's the only problem.

01acls

Hi, Are you guys still playing with this heat soak thing?

mikejoyce34

I just bought my first honda v6 so yeah, its all new to me!

mikejoyce34

Will any of these throw a code if they fail?

Skirmich

^ All of them.

mikejoyce34

Ok then none of these are my issue, no code (currently have cat removed but before that only codes were misfire (random and all 6) and cat efficiency.