Slick2500
New member
I think he changed his plugs and wires when he first got it.
Guess why my car produces 0 boost. Taking bets.
- Thread starter J57ltr
- Start date
16MustangVet
New member
Compression test was 180 on all cylinders more info where was this posted or is this a guess? Where is this pulse rate and balance rate coming from what kind of scan LOL?
Stop making it complicated and pull the damn plugs and post some pics or have those also been swapped for new ones?
I seriously think your saying things are ok that you havnt checked because you fail to comprehend there is a very very real chance that engine is toast from it being on a 3.4 with no other supporting mods...... Reality is b1tch some times but unless you get out of lala land and come back to reality nothing will get done here!
Havnt checked things more to back up my statement here... all 6 cylinders checked out at exactly 180 on all 6 riiiiiiiight you mean they were all 100% identical? LOL how many miles are on this car? LOL
16MustangVet
New member
YAYYYYY more info where was that mentioned previously? Ill bet the ones he pulled out looked like absolute sh1t and he put new ones back in and went back to stock pulley in hopes to "cure" the problem......
Vacuum lines all checked using a vacuum pump.
all vacuum lines Ty wrapped to make sure they stay sealed.
SC feels good normal play when moving back and forth.
MPS system, car came with 3.4" and I moved to 3.6" within a week of getting a car, 3.8 about a week later from a member here.
Scotty suggested MAF may be bad even though there was no evidence of a problem. Replaced it with a Delco
was getting P0068 it was suggested that the MAP may be bad swapped Map and Baro no change.
bought mechanical gauge and installed it to see what was going on.
boost would shoot up then PCM would dump boost
connected fuel pressure gauge 65psi all day long. Bought an electric oil pressure gauge and unscrewed the mechanical fuel pressure gauge and installed oil pressure sender and ran wire into the cabin. Ran for 3 days with 65 psi all day every day
removed the fuel pressure sender and connected a micro switch to detect if it opened or not. Connected the other end to my multimeter set to continuity and grounded other end. Beeps when the valve closes. Found when climbing hill that I would get to 5psi then drop to 0 valve would open.
suspected that previous owner had it "tuned" and screwed it up. Installed stock 04' GTP computer and that's where I'm at now. With the 05' PCM the car went dead lean every time I got on it.
all vacuum lines Ty wrapped to make sure they stay sealed.
SC feels good normal play when moving back and forth.
MPS system, car came with 3.4" and I moved to 3.6" within a week of getting a car, 3.8 about a week later from a member here.
Scotty suggested MAF may be bad even though there was no evidence of a problem. Replaced it with a Delco
was getting P0068 it was suggested that the MAP may be bad swapped Map and Baro no change.
bought mechanical gauge and installed it to see what was going on.
boost would shoot up then PCM would dump boost
connected fuel pressure gauge 65psi all day long. Bought an electric oil pressure gauge and unscrewed the mechanical fuel pressure gauge and installed oil pressure sender and ran wire into the cabin. Ran for 3 days with 65 psi all day every day
removed the fuel pressure sender and connected a micro switch to detect if it opened or not. Connected the other end to my multimeter set to continuity and grounded other end. Beeps when the valve closes. Found when climbing hill that I would get to 5psi then drop to 0 valve would open.
suspected that previous owner had it "tuned" and screwed it up. Installed stock 04' GTP computer and that's where I'm at now. With the 05' PCM the car went dead lean every time I got on it.
16MustangVet
New member
because its adding fuel to drown out knock hence why you don't see it knock... Cmon man all these symptoms lead to a demolished bottom end.
In the above post I quoted where did you check 180psi on all cylinders or is that a guess? They were all exactly 180? LOL What happened to plugs that were replaced or were they? also not mentioned in the above post?
You checked oil pressure, good for you still a junk bottom end... computer is compensating timing and fuel trims to make it run with out knocking. (back to stock pulley helps reduce the drastic changes the computer has to do to make it run and idle with out knocking well sort of run that is)
Lets rule out vac lines, SC, bbv, sc coupler, all sensors, unless its still throwing codes? rule out the pcm since it apparently idles and drives sort of.
Id love to see pics of the plugs and pics of the cylinders after you pull the heads.
At this point you don't have much to lose, pull heads and the cylinders look fine and you button it back up and rule out a bad bottom end which I highly suspect is the issue, Or you pull heads and see one or a few demolished cylinders and replace the engine and be happy you have a running issue free car......
Until you check the plugs or pull the heads everything else is a waste as far as im concerned and your just chasing yourself around in circles.
wye. I test drove the car it had old plugs and wires, I changed them for stock and was told that "these cars don't like platinums" and I put 106's in. New wires and didn't have the multi cylinder misfire. But the car layed over, that's when I started scanning it. After that I bought the BAFX and Tapp. 05' supports cylinder balance and pulse rate of the injectors 04' does not.
Apparently no one on this site knows anything about the 05+ they don't know that the voltage varies between 12.5-15.5v. Nothing.
Apparently no one on this site knows anything about the 05+ they don't know that the voltage varies between 12.5-15.5v. Nothing.
16MustangVet
New member
who gives a sh1t about the voltage if its not misfiring your looking in all the wrong places LOL.......
You keep saying car lays over because god damn it its pulling timing and adding fuel to drown out and prevent knock hence why you likely don't see any knock now especially on a 3.8 pulley.
Umm when was the last time you checked the oil since this hasn't be discussed either? Is is glittery?
You keep saying car lays over because god damn it its pulling timing and adding fuel to drown out and prevent knock hence why you likely don't see any knock now especially on a 3.8 pulley.
Umm when was the last time you checked the oil since this hasn't be discussed either? Is is glittery?
I measured fuel pressure using an oil pressure gauge.
also why pull heads when I can use a bore scope.
i have changed the plugs more than once against my better judgment and installed copper plugs (which I still think is a dumb idea)
the he plugs that came out originally looked pretty good, the wires not so much.
also why pull heads when I can use a bore scope.
i have changed the plugs more than once against my better judgment and installed copper plugs (which I still think is a dumb idea)
the he plugs that came out originally looked pretty good, the wires not so much.
16MustangVet
New member
So now you checked oil pressue and fuel, good for you when did you check the compression? I find it very very hard to believe your "all were 180" LOL
i said something about the voltage because it shows that no one knows how the system works and it should be common knowledge.
with the original 05 computer it went dead LEAN.
04' computer dead RICH.
its due for an oil change and it looks better than any car I have ever had at 3000 miles. Clean, no metal flake.
car has 138K
16MustangVet
New member
for some reason I cant edit my post. I read that wrong so you've checked fuel pressure only? Not oil or compression?
Also a bore scope wont determine if a head gasket it blown but a compression test might which I doubt you've actually done......... So here we go again with chasing the problem around and around in circles.....
Also these cars very very very rarely puke a head gasket on a 3800....... but again that compression test would also be a huge help had you actually done one....instead of the umm ohh its 180 on all 6 cmon guy give me a no sh1t honest answer from each cylinder....
Also a bore scope wont determine if a head gasket it blown but a compression test might which I doubt you've actually done......... So here we go again with chasing the problem around and around in circles.....
Also these cars very very very rarely puke a head gasket on a 3800....... but again that compression test would also be a huge help had you actually done one....instead of the umm ohh its 180 on all 6 cmon guy give me a no sh1t honest answer from each cylinder....
Good or lord you need to read better. I never said anything about oil pressure other than using that type of electronic gauge to measure fuel pressure.
now ask me if I changed the damn fuel filter.
look you are just trolling. If it's within a couple of tick marks of 180 it is freaking 180. I read the bs you posted in the chat box I'm not going through tests I have already done again just because you want to troll. When you have the supercharger off its really easy to do the compression test, in fact I would be a fool not to.
16MustangVet
New member
Ohh god here we go again, what is "supposed" to be common knowledge? The voltage that can vary from one coil to another considering the car has 3. or that the icm is different a little different on each of the 3 sets of coil pack lugs? In this case I could give a damn less what the voltage reads here we don't have a misfire issue correct?
Now you say one computer reads dead lean and one reads dead rich? Umm LOL do you have a air fuel ratio gauge or are you looking at fuel trims here or what is dead lean vs rich to you please tell me LOL.........
If you pulled the stupid dipstick and looked at it good for you now let me ask again WHEN WAS IT LAST CHANGED? Get under the damn car and drain it......... (if you don't want to do a damn oil change and be a tight ass then drain it and dump it back in for all I care. Im asking you what it looks like and I could give a sh1t less what a few drops or a little bit on a dipstick looks like......At least if you drain it youll know what it looks like! Not banking on some little bit on a damn stick.
Gee if you pulled the drain plug maybe you'd even have one of them handy dandy plugs with a fvcking magnet on it that collects all the metal hence your claim yup dipstick looks good LOL.... Geezus man im asking you things for a specific reason don't dodge them or half ass and guess a result myself and others are asking you!!
16MustangVet
New member
LOL please explain what having a SC off has to do with checking compression on the cylinders? And im the one trolling lol maybe if you stop spinning in circles from chasing your own ass around you could read and answer what myself and others have asked........
16MustangVet
New member
Thank you someone with a brain.
It hurts to be that dumb doesn't it? Having the SC off makes all the difference. There is no restriction, unrestricted access to the rear plugs (not that it's difficult anyway).
i did a compression check last week on our forklift and it was 180 on 3 cylinders and 120 on one cylinder. Also depending on exactly how the test is preformed leave the throttle closed and you will have lower readings
i did a compression check last week on our forklift and it was 180 on 3 cylinders and 120 on one cylinder. Also depending on exactly how the test is preformed leave the throttle closed and you will have lower readings