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laggy shifts....
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grimsin
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2005 Chevrolet Impala


PostPosted: Thu Aug 11, 2011 8:52 am    Post subject:  laggy shifts.... Reply with quote

well this is my second transmission(i kept the first one incase i ever needed a rebuild)
problem started last week, the first run of the day, i get onto the road but down the throttle 1/4 ways like aways, but when i think its going to shift into second doest, and im kinda waiting for the shift into second buts its like the car is thinking bout it... and you can feel the car want to shift into to second....then when it does it reallly really slow shift like i can feel it engaging. shift from 2-3rd isnt very good either. once the car warms up a lil bit the car shifts find, just the first time it shifts it does not like it...

only other issue i have is when i start the car, it revs about 900-1000 rpms and rpms climb and drop a few hundred rpms, i sit and wait 1 minute and slowy/ gradually the rpms drop to normal rpms... and my throttle is stuck and i have to "tap" the gas once and its fine after that.....could this be my issue?
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chibiblacksheep
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2000 Chevrolet Monte Carlo
2007 Chevrolet Impala
1968 Chevrolet Camaro
2013 Chevrolet Camaro


PostPosted: Thu Aug 11, 2011 9:36 am    Post subject:   Reply with quote

A stuck throttle is probably just some carbon build up on the throttle blade. The IAC is probably also full of carbon.

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billy101
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2001 Chevrolet Impala
2010 Chevrolet Malibu


PostPosted: Thu Aug 11, 2011 9:45 am    Post subject:   Reply with quote

I had the issue with my throttle being stuck after sitting overnight. You throttle body is dirty and needs to be cleaned. I recommend taking it off the car and soaking it in some throttlebody cleaner and scrubbing the TB walls with a toothbrush, I did that with mine and it came out looking like new and the throttle is much smoother now.
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grimsin
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PostPosted: Thu Aug 11, 2011 11:30 am    Post subject:   Reply with quote

thinkin it could be my issue with my laggy shift when the engine is dead cold?
going to by tb cleaner ad maf cleaner, can i use the maf cleaner on the iat??
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billy101
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2010 Chevrolet Malibu


PostPosted: Thu Aug 11, 2011 12:11 pm    Post subject:   Reply with quote

grimsin wrote:
thinkin it could be my issue with my laggy shift when the engine is dead cold?
going to by tb cleaner ad maf cleaner, can i use the maf cleaner on the iat??


The laggy shifts might be a dirty MAF sensor, clean that with CRC MAF cleaner, also check your air filter. Your MAF sensor plays a role on the PCS and the amount of pressure your tranny applies during shifting I am 90% sure. Make sure you take that throttle body off and scrub the hell out of it. Remove all sensors from it. The only sensors you can really clean are the MAF sensor, and the IAC. I cleaned my carboned up IAC with basic throttle body and carb cleaner and its still working fine to this day. Do that and while you do it, disconnect the battery to reset the PCM for the cleaned up throttlebody. That may be unnecessary but if its really dirty, it cant hurt to have it relearn the newly cleaned TB.
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chibiblacksheep
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2000 Chevrolet Monte Carlo
2007 Chevrolet Impala
1968 Chevrolet Camaro
2013 Chevrolet Camaro


PostPosted: Thu Aug 11, 2011 12:12 pm    Post subject:   Reply with quote

Laggy shift when cold is a new one for me.

Usually it's when it's warm because of the warm fluid or a clogging cat. Yeah you can use MAF cleaner on the IAC. You'll see, it's kind of like a spring that is probably covered in carbon so once you get that carbon if it should work better. If not they aren't that expensive to replace (unlike the MAF)

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grimsin
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PostPosted: Thu Aug 11, 2011 2:42 pm    Post subject:   Reply with quote

k gonna clean up the TB and sensors, if it continues after that ill get a video, thx guys.
EDIT: what should i get
http://www.canadiantire.ca/sea.....fCy1HWqTdm!-212869754?bmForm=form_endeca_search&bmFormID=1313093145211&bmUID=1313093145211&bmIsForm=true&bmPrevTemplate=%2FAST%2Fbrowse%2F4%2FAuto%2F3%2FAutoFluidsChemicals%2FTransmissionFluidTreatments%2FPRDOVR%7E0387801P%2FSeafoam%2BTrans%2BTune%2BAutomatic%2BTransmission%2BAdditive.jsp&bmHidden=OMNITURE_FROM&OMNITURE_FROM=Search&bmHidden=event26&event26=true&bmText=quick_search_term&quick_search_term=seafoam&bmSubmit=quick_search&quick_search=Search&bmHidden=PRODUCT%3C%3Eprd_id&PRODUCT%3C%3Eprd_id=845524443330310&bmHidden=FOLDER%3C%3Efolder_id&FOLDER%3C%3Efolder_id=1408474396676761
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impala2k
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PostPosted: Thu Aug 11, 2011 4:26 pm    Post subject:   Reply with quote

I am curious about this as my car does this, but once the temp gets above a certain point its fine.

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jmakinen
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2005 Chevrolet Impala


PostPosted: Thu Aug 11, 2011 5:59 pm    Post subject:   Reply with quote

I've had the sticky throttle also, now I know why. Thanks guys!!!
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Albert2kls
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PostPosted: Thu Aug 11, 2011 9:04 pm    Post subject:   Reply with quote

This is what I found on my new service manual disc I got from ebay

Harsh or Soft 1-2 Shift Feel
Checks
Cause

DEFINITION: One of the two following conditions occurs during a first to second gear steady throttle upshift, or a second to first gear coast, or a light to moderate throttle detent downshift:

Harsh shift feel -- an unacceptable quick gear change occurs.

Soft shift feel -- an unacceptable long gear change occurs.

Automatic Transmission Fluid Level - soft shift only
Low fluid level

Transmission Main Line pressure
Low or high transmission main line pressure

Oil Filter Assembly - soft shift only
The oil filter assembly (100) is missing, plugged, or damaged.

The oil filter seal assembly (101) is missing or damaged.

1-2 Accumulator Assembly
Misassembled or upside down 1-2 accumulator assembly

Damaged or missing 1-2 accumulator piston oil seal ring (137A)

A damaged or missing 1-2 accumulator piston cushion spring (139) or outer spring (142)

A stuck or binding 1-2 accumulator piston (136A)

Debris in the passages of the accumulator cover spacer plate (134)

Control Valve Body Assembly
Debris in the passages of the control valve body (301) or spacer plate assembly (370)

Missing or mislocated #2 ball check valve (372)

Misassembled 1-2 accumulator valve (340-345) line-up

Stuck or binding 1-2 accumulator valve (341)

Damaged or missing 1-2 accumulator valve spring (340)

Missing, damaged, or misassembled 2-3 accumulator valve bushing (345), bore plug (343), or retainers (342, 385)

Driven Sprocket Support Assembly - soft shift only
A damaged second clutch housing oil seal rings (613) or the four lobe oil seal ring seals (612)

Worn or damaged second clutch housing bushings (616, 619)

Second Clutch Assembly
Missing or not seated second clutch basking plate retaining ring (627)

Missing or misassembled second clutch backing plate (626)

Worn, damaged or misassembled clutch plates (623-625)

Missing or not seated second clutch spring retaining ring (622)

A damaged spring assembly (621) or piston (620)

A missing or damaged second clutch housing ball check valve assembly (618)

A damaged second clutch housing assembly (617)

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grimsin
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PostPosted: Fri Aug 12, 2011 5:06 pm    Post subject:   Reply with quote

k going to take my TB off... one question, is the gasket reusable?
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IffyG
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1998 Oldsmobile Intrigue
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PostPosted: Fri Aug 12, 2011 5:11 pm    Post subject:   Reply with quote

Yes, but it doesn't hurt to replace it. You can get one for like 5 bucks at Autozone.

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grimsin
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2005 Chevrolet Impala


PostPosted: Sat Aug 13, 2011 9:06 am    Post subject:   Reply with quote

darnit my link wont work angry8
i got 3 choices of seafoam but i want what everyone here uses.
Seafoam Motor Treatment
Seafoam Deep Creep
Seafoam Cleaner and Lube
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chibiblacksheep
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2000 Chevrolet Monte Carlo
2007 Chevrolet Impala
1968 Chevrolet Camaro
2013 Chevrolet Camaro


PostPosted: Sat Aug 13, 2011 4:05 pm    Post subject:   Reply with quote

Seafoam Motor Treatment in the can.


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grimsin
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PostPosted: Sat Aug 13, 2011 5:35 pm    Post subject:   Reply with quote

so looks like my brother is gonna seafoam the 05 mustang g.t, with me, should be fun ill try to get it on video.
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