Few Problems I need help with.

BruhBrahBrad · Nov 2, 2009

Ok so I just started driving my car around lately, Gettin used to it and stuff, and since I am still on the permit phase Im riding with my mom. Of course since she is my mom, Every little thing makes her nervous, its kinda annoying. Shes so used to her BMW 745 and riding in something you can feel is somethin she aint used to yet its been a while.

Anyway, riding around We have noticed, a few things that need attention asap. THE BRAKES SUCK AND PULSE LIKE FUCK. Im getting a whirring noise from the rear end, and the car shakes like fuck. I wanna say it has a cam, cause it lopes a good bit, and its smelly. It could be the harmonic balancer, but IONO. I've been in other Sn's but none of them had mods (except a 03 mach but thats a totally different beast) and none of them drive like mine. I've done most of the Maintenance stuff and everything.

Please help

GTStang98 · Nov 2, 2009

pull the brake calipers off and check them out. replace your brake pads. it is probly brake pads as far as braking goes. when do you hear the whirring noise from the rear end? is it when your braking, or whenever the car is rolling or just when accelerating? when i first got my car it shook strangely. what it happened to be was 2 of the spark plugs were bad so when it was idling it would shake the car. so check your spark plugs. could be a number of things tho. hope this helps

BruhBrahBrad · Nov 2, 2009

GTStang98 said:
pull the brake calipers off and check them out. replace your brake pads. it is probly brake pads as far as braking goes. when do you hear the whirring noise from the rear end? is it when your braking, or whenever the car is rolling or just when accelerating? when i first got my car it shook strangely. what it happened to be was 2 of the spark plugs were bad so when it was idling it would shake the car. so check your spark plugs. could be a number of things tho. hope this helps

I hear the whirring noise when Accelerating at speed, and Also sometimes while coasting. Its louder under acceleration. I changed the plugs when I first got the car, I will check them again though. I did have a hard time getting the last one on the passenger side in so, I might wanna check that one. Also I never gapped them either so im gonna do that too.

Im going to try and get the car into my friday class and check the brakes. Im at a community college takin automotive classes so i can get stuff done for free or very cheap. Its awesome btw. Im gonna put it on the alignment rack and see how it looks also.

BruhBrahBrad · Nov 2, 2009

And I just realized I never change diff fluid, how hard is that?

Mean98GT · Nov 2, 2009

+1 with gt on the brake issues. And as far as the the other problem goes i'd say if you had aftermarket cams then you'd know it.

GTStang98 · Nov 2, 2009

changing diff fluid is very easy. but the whirring from the rear end is a very scary thing. when i swapped my rear axles for 31 splines and went to a 31 spline differential the driveline shop guy was telling me about the different sounds that a bad rear end makes and whirring could possibly be that your ring and pinion gears are not within tolerance of eachother. do you have stock gears in the rear end? if your diff fluid is low, the whirring would be the sound of metal on metal because of a lack of lubrication.

BruhBrahBrad · Nov 2, 2009

Yeah I think I have stock 308s and what do you mean I would know If I had cam(s) this is a pushrod I shoulda mentioned that.

Petek · Nov 2, 2009

is the "whirring" sound always consistent with certain speeds?

also it sounds like you need pads and rotors, and you probably have a vacuum leak, bad 02 censors, or a crappy iac. what does ur car smell like? rotten eggs, or horrible gas fumes?

if your car is running that bad it is probably throwing up the check engine light, get it read and taken care of.
you should really give your car a once over and inspect everything, or have it checked out, and probably give it a FULL tune up before you start driving it all the time. also diff fluid is easy to change, just make sure before you put the new diff cover gasket on that both mating surfaces are very clean. and be sure to put the correct diff fluid, and friction modifier in. while the cover is off, inspect for metal shavings. the whirring sound your experiencing could very well be just typical gear whine, which is not something to be afraid of, its annoying yes but nothing that will cause copious amounts of damage in your rear end.

BruhBrahBrad · Nov 2, 2009

Pete k said:
is the "whirring" sound always consistent with certain speeds?

Yes, around 35- 65 the only speeds I've really been at constantly

Pete k said:
also it sounds like you need pads and rotors, and you probably have a vacuum leak, bad 02 censors, or a crappy iac. what does ur car smell like? rotten eggs, or horrible gas fumes?

Yeah it smells like gas fumes, and I just cleaned my IAC 3 days ago..

Pete k said:
if your car is running that bad it is probably throwing up the check engine light, get it read and taken care of.
you should really give your car a once over and inspect everything, or have it checked out, and probably give it a FULL tune up before you start driving it all the time. also diff fluid is easy to change, just make sure before you put the new diff cover gasket on that both mating surfaces are very clean. and be sure to put the correct diff fluid, and friction modifier in. while the cover is off, inspect for metal shavings. the whirring sound your experiencing could very well be just typical gear whine, which is not something to be afraid of, its annoying yes but nothing that will cause copious amounts of damage in your rear end.

It gives me a constant abs light, and I got a check engine light for about 10 seconds after I basically lugged the car. Started in second on accident. Its also got a airbag light too.
What would you consider a full tune up? I changed plugs, wires, coil, oil, fuel filter, cleaned MAF a while back might need to be redone,cleaned Iac, changed filter

BruhBrahBrad · Nov 2, 2009

bumpo

CC'S95GT · Nov 2, 2009

Get the codes and report back to us. You can do it with a paper clip if you have a haynes manual if not good luck finding a place to read OBD1 codes. (the port under your dash isn't active on 94/95's GT's so don't try to read them there).

The pulsing from the brakes is probably from warped rotors so get them turned and replace the pads.

The shakey engine could be a bad harmonic balancer. (you can see it wobbling while at idle, or can be seen from under the car as a bit of rubber squeezing out of the back). If it is wobbling STOP driving it till you get it fixed. It could cause a lot of damage if you continue to drive it.

Petek · Nov 2, 2009

there is probably a port in the engine bay, thats where i used to use my ob1 reader on my fox, it was by the firewall on the driver side iirc. but don't waste ur time with turned rotors, just get new ones. really before you start looking for engine problems, get ur codes read. a reader is like 65$ or something like that and its a great investment, i have an obd1, and obd2 handy in my garage. if your burning to much gas your O2's are probably shot, but once again don't waste money on parts you don't need. Find out what your codes are. let your engine idle and watch your harmonic balancer, or anything else that could be vibrating. hang in there man, you will get it all straightened out.

CC'S95GT · Nov 2, 2009

the OBD1 port on the 94/95 is on the passenger side by the rear of the shock tower.

TxCobrA98 · Nov 2, 2009

turning your rotors is fine if you dont want to spend cash on new rotors. do brake pads at the same time. may sound stupid but double and triple check to make sure you firing order is correct since you replaced wires and gap your plugs. and see if any codes are being thrown out like everyone else said.

BruhBrahBrad · Nov 2, 2009

I went to Kragen today and bought a 30 dollar obd 1 reader for ford. It gave me these codes
172 hego sensor fault/lean
136 hego sensor fault, always lean

I did the cylinder test also and passed. code 90, I didnt get any abs codes though, and my abs light is steadily on while Im driving. Do i need to get it to come on then run a test?

CC'S95GT · Nov 2, 2009

When I got those lean codes I cleaned the maf and reset the computer. Are you running a K&N style air filter? It could also be a clogged O2 sensoras well. (A haynes manual can give you the meanings and where to look to fix the codes)

Your ABS light could be as simple as metal shavings stuck to the sensor or a broken wire.

Petek · Nov 2, 2009

your left and right bank o2 sensors are saying your car is running lean. so its probably running in open loop mode to be safe (the reason its running very rich right now). what did your old spark plugs look like when you replaced them?. as far as a code 90?? i have no idea.

did you do the KOEO, or KOER test?

Your obd1 wont tell you anything about the abs , or airbag unfortunately. your going to have to go over all of the wires and sensors in your abs to figure that one out.

BruhBrahBrad · Nov 2, 2009

Pete k said:
your left and right bank o2 sensors are saying your car is running lean. so its probably running in open loop mode to be safe (the reason its running very rich right now). what did your old spark plugs look like when you replaced them?. as far as a code 90?? i have no idea.

did you do the KOEO, or KOER test?

Your obd1 wont tell you anything about the abs , or airbag unfortunately. your going to have to go over all of the wires and sensors in your abs to figure that one out.

I did both koer and koeo, the old plugs were blackened if you understand what Im saying. The code 90 just means that all cylinders are good, when i ran the cylinder test. So if the sensors are saying im running lean how come, Im actually so rich? Im not sure if thats understandable, maybe u get what I mean. Should I replace the 02's?

BruhBrahBrad · Nov 2, 2009

DESERTCOX05 said:
When I got those lean codes I cleaned the maf and reset the computer. Are you running a K&N style air filter? It could also be a clogged O2 sensoras well. (A haynes manual can give you the meanings and where to look to fix the codes)

Your ABS light could be as simple as metal shavings stuck to the sensor or a broken wire.

Yeah Im running a K&N but I dont think the car has been driven enough to need the MAF to be cleaned again. I cleaned it then the car sat, only to be occasionally driven around the hood. But now that I think about it, I did do some body work, I wonder if some sanding dust could have gotten in the air and sucked into the MAF... I'll clean it again as soon as I get another security t-20.

Petek · Nov 3, 2009

Yah it makes perfect sence. Your 02 sensors are saying your running lean, so to keep it safe your computer will kick in to open loop mode, which is a safety mode which basically makes your engine run very rich. Yes, i would swap in new o2 sensors and go forward from there.