Author Topic: E30 Problem with power (Read 6998 times)

E30own'er · « **on:** December 31, 2006, 02:18:37 PM »

my e30 starts after being in the garage forever now my problem is it tops out at about 37 mph and it seems to not give power or torq in any gear ... i was just wondering if this could me solved in a simple wireing problem only thing is all the fues's are intact and not blown any help could be good

E30own'er · « **Reply #1 on:** December 31, 2006, 11:02:27 PM »

can someone help me please i realy would like to see my car running at peek performance

RED IS 91 · « **Reply #2 on:** January 01, 2007, 05:44:39 AM »

Quote from: E30own'er;16546

my e30 starts after being in the garage forever now my problem is it tops out at about 37 mph and it seems to not give power or torq in any gear ... i was just wondering if this could me solved in a simple wireing problem only thing is all the fues's are intact and not blown any help could be good

some more info please...
does it idle ok ?
does it run well until it gets to 37 mpg? ( 37 in 1st gear is not bad

)
What year and model is it ? How many miles on the car? What kind of shape?Was it well maintained ?
Is it hesitating ? spit and sputtering ?
do you have the gas pedal to the floor at 37?
Have you done any basic tune up to the car

I.E. plugs, wires, air filter ,gas filter ? There are a lot of things it could be .
We can't help ya if you don't give us good information .
Thanks

E30own'er · « **Reply #3 on:** January 01, 2007, 02:57:35 PM »

no its 37 mpr in 4th .... dosnt pass 3,800 RPM and i think its running lean dont know how to fix that

it starts only when messing the pedal down and even out of gear with clutch down it dosnt pass 4,200RPM sadly im completly confussed on what to do

biljak · « **Reply #4 on:** January 01, 2007, 03:03:28 PM »

check spark plugs.

E30own'er · « **Reply #5 on:** January 01, 2007, 03:13:28 PM »

im going to replace the spark plus , wires , injectors , hose's , and belts ill get back to this site after say if it works or not

kowalski · « **Reply #6 on:** January 01, 2007, 03:54:39 PM »

fuel filter, visual check on plugs and airfilter, check for a good spark by grounding out the plug on something, this rules out plugs and wires.

how does it idle?

e9nine · « **Reply #7 on:** January 01, 2007, 06:23:26 PM »

Quote from: E30own'er;16546

my e30 starts after being in the garage forever now my problem is it tops out at about 37 mph and it seems to not give power or torq in any gear ... i was just wondering if this could me solved in a simple wireing problem only thing is all the fues's are intact and not blown any help could be good

Are you saying the car sat in the same spot for a long time?

Did you put any stabilizer in the gas tank when the car sat for that period of time?

Have you run fresh fuel in the car since storage?

As asked earlier - how does the car idle?

Is your check engine light on?

Are there any issues with mice in the garage or area of storage?

denious · « **Reply #8 on:** January 01, 2007, 08:28:11 PM »

Mice?? :eek:

e9nine · « **Reply #9 on:** January 01, 2007, 09:20:52 PM »

Quote from: denious;16617

Mice?? :eek:

yeah hehe. They can eat a harness... enter your airbox and leave some crud in there etc :mad:

E30own'er · « **Reply #10 on:** January 02, 2007, 03:28:59 AM »

well car idles like a around 350-750 RPM some times stalls , wires are good connectors work aswell new fuel filter new fuel lines and spark plugs . car had no fuel in it well sit i got 3 gallons of 91 in it 3 days ago .
after i put new injectors it dosnt start it sounds like it would fire up then after i let it go it dies... im sorry for makeing this so long with response but ive been helping family members move back and forth all day

so far i have checked and replaced is
-wires
-belts
-injectors now 19# from a ford *all work ive checked each one
-fuel filter
-fuel lines
-some old fuse's that look pretty bad (not blown but very old )

(ps. no mice but 1 fat ugly cat and one thats always in the garage sleeping on my car or on the tire under the wheel well

E30own'er · « **Reply #11 on:** January 05, 2007, 04:08:55 PM »

i got a bmw book checked replaced everything you guys said too but now i know what it is its something with the TPS the wires is not sending any information between the 2 18 and 3 slots ... its not that it isnt sending more like it isnt even receveing any information
i dont know how to rewire it or anything to make it work

e9nine · « **Reply #12 on:** January 05, 2007, 05:07:54 PM »

Ah hah - you might be onto something. A frayed TPS harness will cause the car to run terrible and sometimes not even start at all. The area where there's a rubber boot/sheath around the connector is usually where the wires break.

While the car is running - tug on the wires and see if the car stalls completely or get's better intermittently. You can splice the wiring and fix the breaks or you can source a used harness to make another connector.

G.Luck.

E30own'er · « **Reply #13 on:** January 05, 2007, 08:50:30 PM »

maybe the wires ... but i changed all the wire cracks by crimping them together with new wires .. checked voltage. .. didnt work ( with engine on idleing at 2,700rpm ) then i put it back together then by hand pulled the throttle wire to full-open throttle ... stop'ed at 4,800rpm thought maybe the TPS was dead got new one from local bmw store replaced and did same thing .. 4,800rpm is there anything of the ECU dieing with no fuse's blowing ?

kowalski · « **Reply #14 on:** January 06, 2007, 02:30:40 AM »

how are the connections on the new wires, did you solder them or just crimp? because that connection and resistance could be changing the signal thats being sent.