Welp...I can tell you first hand that the gauge clusters in these cars can suck. The speedo on mine is completely dead but I'm too cheap to replace it right now. Eventually I'm going to get the cobra gauge cluster.

Have you checked/replaced the thermostat? Also I'm sure there's a temp sensor for the fan so maybe that's on the fritz as well.

As for the rear car vibrations, I had the rear gears replaced in mine @ 70k miles due to bad whining but if you're getting a vibration that could be from the driveshaft. I guess you need to get under there and see if there's much free-play at the rear of the driveshaft.

For the intake sounds, that is an odd one. Kinda difficult to give any sort of answer without a sound clip.

 

Hope Not

Intake sound anybody else but a blog I read the owner pulled the intake and found that one of the butterfly control plates factory had fractured and was getting ready tobe ingested into the engine and the shaft running through the plates had play in them. Not to alarm you but without hearing it maybe this can isolate it for you. Steeda makes economey delete plates around 190 bones and you will need to update the tune and they have a Billet set 300 bones with NoS ports just FYI. And good luck.

Herrmann T

 

Is that the car that was for sale for rather cheap on s197forums? Like $13,000 cheap?

 

opcorn

 

4 sounds like maybe loose driveshaft bolts, maybe a bad u-joint, or maybe a tire imbalance.

5 sounds like pinging. What gas are you using? Are you running an aftermarket tune?

 

4 sounds like maybe loose driveshaft bolts, maybe a bad u-joint, or maybe a tire imbalance.
QUOTE]

+ 1, alos bad wheel bearings can cause vibrations the faster you go....had that happen on my 90LX.

 

ill go out with a camera in a few hours and get a good recording of the noise. perhaps even the high speed vibration as well.

but as for the gauges and the fan some times not coming on with the start of the vehicle, im definitely going with the computer is just looney, if it was a sensor why would it be almost exactly 1 out of 4 runs, and it couldnt be a thermostat issue, the temp gauge will some times jump half the meter, or just not work at all.

system checks always come up with engine coolant temperature ok.

also, the car came from south carolina in case it was the same car from whatever forum for cheap.

 

2005 GT For sale 12,500!!!! 72k miles!!! - WWW.S197FORUM.COM

Yeah it is.

He used to run nitrous, and ht0 plugs in it. The intake sound may be from where he plugged the intake after removing the nitrous jets?

 

where could i look for these plugs? and i mean that in all seriousness, ive never dealt with nitrous, my guess is somewhere by the injectors


and how do you know the guy ran nitrous? anything else i should know about? haha

 

Vibrations, funky gauges..... RUSTLING SOUNDS???!!! I'm not a mechanic but that **** doesn't sound like the car is long for this world

And are you sure about the gears? I was pretty sure there weren't any 4.11's for our cars....only 4.10's. Pretty sure 4.11's are from the old days

 

yeah im sorry, haha theyre 4.10's. before this car ive only owned 60's cars.

i hope theres nothing too serious with this car, the guy i bought it off of said the car was fine mechanically.

im just hoping i dont have to replace gauges and sensors, and just a computer issue with the car. but if it comes to parts being replaced, then id be glad to at least have things narrowed down.

 

Good luck, I hope everything works out for you

 

Fuel gauge is probably off because the cross over tube isn't flowing fuel from the right saddle tank to the left driver side one for float.

Could also be that the previous owner played with adding fuel if it was a nitrous car. if he was in the tank at all the pump float could easily have been tweaked. Check that as well.

Rear vibration trouble sounds like drive shaft. start there, that's the easiest. Have balance checked etc..

 

are you saying theres two different areas in the fuel tank? and the side that has the fuel gauge floater isnt getting any fuel?

i feel like im missing something here.

how would i go about solving that sort of issue?

 

These tanks are split, it's like a saddle for a horse with a cross over. sometimes they collapse and don't flow well.

It is pre bent to wrap around the pump modules inside the tank and to go over the axle. They pulled out petty easily.

 

so are you suggesting i pull the tank out?

there is something funny with my gas tank, i cant fill the tank normally at a gas pump, it constantly backs up and shuts the nozzle off, even when the tank is (supposedly) empty. i have to turn the gas pump nozzle upsides down and the fuel flows fine.

 

i have a gas gauge problem to and but mine is a bad sensor in the fuel pump and the solution is for me to get the pump replaced, im not because the pump works fine and i rather have to calculate how much gas i have vs having to pay $900 for a new pump. So that may be it for you, im not shur exactly what its called but its a sensor in the pump it self

 

$900 for a new fuel pump!!!??? You can buy the GT500 duel pumps with all wiring and module for $620....

 

4 is most likley a drive shaft being bent. I had that same problem on mine. It would be fine until you hit one certain point then it would start shaking. Then it would get worse the faster you went. Bought an aluminum drive shaft and everything is golden now

 

just drove my car around town for alot of errands, parking, turning the car off, yada yada yada.. (camera needs to be charged so no pics/video yet)

and it appears that now my temp gauge is upside down, perfectly mirrored... it seemed to be pretty far to the right at one of my stops (as usual, checked the fan, it was on, checked usual high heat surfaces, they werent too hot for touch, everything was fine). back to my point- the temp gauge seems to be at half way through its swing, but just mirrored upside down.

the gas gauge is still a bit iffy, it appears to be locked at one spot, just a little lower than dead left. i need to go out and put a full tank in to see if it gos up to a perfect up-left position. then at that point i would know its got the temp gauges disease.

would resetting the computer (taking the battery cable off for 15 seconds- if thats how you really do it) fix this? im guessing id have to retune if i did this as well, which isnt a problem at all, i have the tuner in hand.

if that isnt how you would reset the gauges and or computer. how do you go about that?

 

05+ Gas Tank Fill Problem Fix - WWW.S197FORUM.COM I had the same problem with filling my tank , did this and now I can fill FULL, with out turning nozzle up, no problems!!! try, and hope it works for you !!

 

There are a couple TSB's for the fuel fill and erratic fuel gauges on these 05's also.. I have had it with the jumping fuel gauge and filler problems. Going to call and see if I can get the TSB's done even though i am the second owner on my car.

 

just tried the computer reset by taking the negative battery cable off for 20 minutes, that didnt fix the gauges, although it did put 5 miles of extra gas in my tank according to my digital readout (miles to E).

 

that looks like a ground issue causing them to peg

 

well where could that be. on both of those sensors for the gauges? or the cluster? or what.

i mean they swing like they normally would, except the temp is upside down, and the gas gauge is sideways...

would this still happen if there was a bad ground?

 

considering that there are a million wires on your car its hard to tell from here but the easiest thing i think to do is first un plug the fuel sender and see what happens. that will eliminate the sender for fuel next hook up you scan tool and see what the ect is on that or if its throwing a cht sensor code or something. its a start

 

my car never gives me any codes when i try to pull them with my SCT tuner. always comes out clean.

do you know off the top of the head where the fuel sender hookup is?

 

under the rear seat on the drivers side. do you get a ect reading on you scanner

 

no ect's. been driving the hell out of this car, and i check them every day hoping something will come up, but they never do.

 

ect= engine coolant temp. you can look it up on your scanner under diagnostics