CD MaroMan 91

well... my car is doin this weird thing... when i stop at a light it idles up and down... not a LOT... but between 500-1000... and when i step on the gas... it doesn't accelerate like it should... i can floor it... and it's just the same as holding it about ¼ the way down... it revs up but doesn't get a lot of power going... i went and was going to get the timing adjusted today... but the guy did the light and said the timing was "right on the money" so tha'ts not the problem... anyone have any ideas?!

TomP

Could be the cat is clogged... any vacuum leaks?

CD MaroMan 91

35 - Idle air control problem
44 - Lean Exhaust
43 - ESC module or sensor circuit problem

those are the codes i had a while back and i'm pretty sure they are still there cuz my SES light comes on when i start up my car

i don't have a cat lol so i know it's not that... how can i check for vacuum leaks?

aaroedg

revs but not much power at the wheels?

clutch may be sliping

CamaroStud1988

if the idles hopping around it might be intake manifold leak, when you push the brakes does it mess w/ the idle and lose brake pressure? mine was doin that and my intake manifold wasn't sealed totally.

CD MaroMan 91

it doesn't hop around that much... it just sounds like it's gonna shut off... or like i said 2 my dad today... it's like it's fixin 2 pass out... and he's gaspin for air when i stop at a red light or stop sign or pull up in the driveway... it goes from like 600-800 rpm... not 2 bad tho... but i just wanna get this fixed so i can be ridin normal again... i want my speed back ! **i know it's not a v8 but it still could get up and go** and plus as soon as we fix this i get my flames done and new exhaust

CamaroStud1988

well check ur cat, get some k and n airfilters, maybe ur throttle position sensor is screwy, or try cleaning ur throttle body, that helps alot, you can adjust the tb a little bit to, but i dont think that will help by what your saying. clean ur IAC, that could b the problem

CD MaroMan 91

i dont' have a cat oh well... we thought that was it a few months ago when it first started so we took it 2 the exhaust place up the road and he put the car up and goes NOPE IT CAN'T BE UR CAT CUZ U DONT' EVEN HAVE ONE!! i have 3 guys that can look at it... 1... my g/f's dad that works at fowler/buick i think somethin like that... then my soccer coach from last year... he races cars and works on engines and stuff... and 3 my g/f's brothers g/f... she has a really good friend that owns a shop up the road so either way i SHOULD figure it out soon! haha

elevario

You don't have a cat? Do they not have emissions where you live? Have you checked if you had one yourself? Please don't take it offensively if you have but just check right underneath that hump on the passenger side. It looks like a small muffler thing. Other things you could check real quick would be your spark plugs and wires. Make sure the plugs are at .45. Check ignition (everything real quick) Get things tested at local auto zone, or checker ( all free) Then if everything is alright, take it to the shop!

CD MaroMan 91

nope no emissions! and yes we checked for the cat... i was at the exhaust place when he put it on teh ramps and lifted it up... he was gonna check if it was clogged but he showed me where it would have been... just a straight pipe there no cat... and we just changed spark plugs... wires... rotor & distributor cap... fuel filter... i might just get dad 2 take it 2 autozone 2morrow and see if they can figure out anything

icebird_1981

my car use to do the same thing but it was just the carburator needed some adjustments, if your car is carburated i think it would be that.

CD MaroMan 91

nope my g/f's dad and my dad are going 2 look at it 2day... they are gonna check the fuel filter... vacuum lines... pcv valve... and some other stuff i forgot lol... but it's a 3.1L V6... automatic

TomP

I hope the fuel pump is okay. Try borrowing a fuel pressure gauge that's meant for fuel injection (goes to 80 psi)... it screws into the Schraeder valve on the back of the silver fuel rail, under the spider-looking "plenum" on top of the motor. Car off, ENGINE COLD (no fires!!), put a rag around the base of the valve to catch any gas. Remove the valve's cap, put it in your console or pocket so you don't lose it. Screw the gauge onto the valve while using the rag to "hide" the valve- fuel can squirt out, this way, the rag catches it. You might want to wear safety glasses, too. When the gauge is on, turn the key from "off" to "run/test lights"- the position right before crank, where the dash lights come on, and you could use your radio/power windows if you wanted to. Fuel pressure should build up to ~42 PSI and hold. Remember to depressurize the gauge before you remove it so 42 PSI of fuel doesn't squirt you in the eye. Also, throw the rag outside and let it sit for a few days so the gas evaporates from it... don't just throw the rag in the trash.

Ryan_Alswede

This is causing your weird idle!!


One reason why you have no power!!!

Second reason why you have no power!! Your timing is on but the computer can't see or advance your timing to give you power.

Fix these codes and your done,,,, NO you don't have a fuel pump problem.

Ryan_Alswede

You need IAC , oxygen sensor and an ignition module

CD MaroMan 91

ok... we got those 3 things put on today... 2morrow i'm gonna take it out when i get home from school and see how it runs... how do i clear the codes and get my SES light 2 quit glowin?

Ryan_Alswede

Disconnect the battery for 2 minutes to be sure.

Ryan_Alswede

Your car will act a little funny when stopping because the computer has to relearn the IAC postion but no codes should set and the learning should only take a few days of driving

CD MaroMan 91

k thanks... i'll try it 2morrow...i hope this works!... those 3 things cost $90 haha... plus i haven't drove my car much all summer and haven't driven it 2 school yet this school year

Ryan_Alswede

I KEEP forgetting stuff!! Sorry

If you set any codes read them right away and if it's the same ones, who ever did your mechanic work didn't fix the problem all the way.

CD MaroMan 91

haha it's ok... when i get in from school 2morrow i'm gonna drive up the highway 2 autozone because they give free scanning on cars and they will tell me what codes are on and what the computer says... then i'll post back ... thanks again!