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Forum: DIY PROM
08-18-2013, 09:46 PM
Replies: 4
Views: 543
Posted By mmather1

Re: low power at higher rpms

i will be using tunerpro rt :)
Forum: DIY PROM
08-18-2013, 09:42 PM
Replies: 4
Views: 543
Posted By mmather1

Re: low power at higher rpms

No, but i will datalog it tomorrow and post the log
Forum: DIY PROM
08-18-2013, 08:21 PM
Replies: 4
Views: 543
Posted By mmather1

low power at higher rpms

OK To start here i am running a 165 maf system. I have a 350 with a xe268 cam shaft, 906 vortec heads, sdpc lower intake, and a custom made upper intake that makes the runners quite a bit shorter. ...
Forum: DFI and ECM
05-14-2013, 05:48 PM
Replies: 17
Views: 1,040
Posted By mmather1

Re: Cooling fan is running as soon as engine started

there is no connector left their or no sensor
Forum: DFI and ECM
05-14-2013, 06:17 AM
Replies: 17
Views: 1,040
Posted By mmather1

Re: Cooling fan is running as soon as engine started

I have tryed setting min idle with IAC in all the way, not sure of the park neutral adder? and yes the AC is not there
Forum: DFI and ECM
05-13-2013, 08:43 PM
Replies: 17
Views: 1,040
Posted By mmather1

Re: Cooling fan is running as soon as engine started

On a cold start it will idle at a decent rpm 800 or so, but once it warms up it starts jumping around then wants to die , the only way to keep it running is to turn the throttle stop screw up then...
Forum: DFI and ECM
05-13-2013, 08:03 PM
Replies: 17
Views: 1,040
Posted By mmather1

Re: Cooling fan is running as soon as engine started

Thanks, that worked when I grounded D11 the fan works at it should, now if i could get rid of this hunting idle and stalling I would be good to go!
Forum: DFI and ECM
05-13-2013, 06:17 PM
Replies: 17
Views: 1,040
Posted By mmather1

Re: Cooling fan is running as soon as engine started

3 ecms all with different memcals, im going to head out right now and ground d11
Forum: DFI and ECM
05-13-2013, 05:31 PM
Replies: 17
Views: 1,040
Posted By mmather1

Cooling fan is running as soon as engine started

Hi, I have a tpi setup with a 165 (maf system) on a conversion vehicle, The car has a surging idle and stalls sometimes. Also the cooling fan runs all the time. At the Ecm pin C1 is the cooling fan...
Forum: DIY PROM
09-17-2012, 05:32 PM
Replies: 6
Views: 1,104
Posted By mmather1

Re: Hunting idle

Ok I plugged the map back in and unplugged the 02 sensor to force open loop, still hunting. so I unpluged map at the same time still hunted. I plugged the o2 sensor back in and unplugged the map and...
Forum: DIY PROM
09-16-2012, 08:47 PM
Replies: 6
Views: 1,104
Posted By mmather1

Re: Hunting idle

It seems to be happening at all temps, but it also goes into closed loop like as soon as you start the engine. I will try unplugging the o2 sensor tomorrow to see if it makes a difference. I am...
Forum: DIY PROM
09-16-2012, 05:47 PM
Replies: 6
Views: 1,104
Posted By mmather1

Hunting idle

I built an engine for my 91 s10, 350, comp cams 268XE cam 477/480 lift 224/230 duration @ 0.050 with a 110lsa. I build a custom short runner upper intake manifold and im running vortec heads with...
Forum: TPI
04-08-2012, 09:46 AM
Replies: 0
Views: 656
Posted By mmather1

Best Cam choice

I have a 350 that i am rebulding and using with a speed density tpi, vortec heads, with valve guides and seats cut down, spdc intake base, have stock runners right now but plan to upgrade, also have...
Forum: Transmissions and Drivetrain
07-23-2009, 07:56 PM
Replies: 2
Views: 4,048
Posted By mmather1

700R4 - Starting in 2nd gear while in D

Hey everyone, After rebuilding my tranmission, it seems to be taking off in 2nd gear while in the drive position, if i put it into Manual 1, it will take off in first then shift into 2nd, but in D...
Forum: Transmissions and Drivetrain
07-21-2009, 07:49 PM
Replies: 0
Views: 3,744
Posted By mmather1

700r4 valve body sticking valve

I recently rebuilt a 700r4 for my car, after installing i was getting a really early 1-2 shift, at any throttle it always seemed to shift before 2000rpm, I have a corvette governor in it, so i no...
Forum: Transmissions and Drivetrain
07-20-2009, 09:43 PM
Replies: 16
Views: 9,525
Posted By mmather1

Re: 86 700R4 1-2 shift early

Ok I removed the Valve body, took it all apart and cleaned it again, When installing everything back into it i noticed 2 things, The valve closest to the roll pin on the TV limit valvetrain was stuck...
Forum: Transmissions and Drivetrain
07-16-2009, 07:24 PM
Replies: 16
Views: 9,525
Posted By mmather1

Re: 86 700R4 1-2 shift early

Ok i took a break and went back out to double check the pressures again, and with the cable off it is at like 110 psi in all gears that is was 78 before , reverse and 2nd are still higher? could...
Forum: Transmissions and Drivetrain
07-16-2009, 05:56 PM
Replies: 16
Views: 9,525
Posted By mmather1

Re: 86 700R4 1-2 shift early

Ok, I put the pressure Gauge in the mainline port above the shifter.... With the Tv cable unhooked, i got around 78psi in park, 170 or so in reverse, OD(78) D(78) 2(160) 1(78) Im assuming that 2...
Forum: Transmissions and Drivetrain
07-15-2009, 04:31 PM
Replies: 16
Views: 9,525
Posted By mmather1

Re: 86 700R4 1-2 shift early

Im a Bit confused, if i had the smaller diameter drum, and the shorter band, how would this affect the one to shift, if im thinking right it would cause sliping in 2nd gear, or it would take longer...
Forum: Transmissions and Drivetrain
07-14-2009, 08:36 PM
Replies: 16
Views: 9,525
Posted By mmather1

Re: 86 700R4 1-2 shift early

Not sure if the valve body had any shifting problems before, it was just a core that i rebuilt, the shift kit was the SK 700 not the JR , it was the Syskokal or whatever its called.... I had the...
Forum: Transmissions and Drivetrain
07-11-2009, 04:34 PM
Replies: 16
Views: 9,525
Posted By mmather1

86 700R4 1-2 shift early

Hey everyone I just finished rebuilding an 86 700r4 for my car, and installed it... After setting my cable at wot TV full pull, I notice that I cant even get to 3000RPM before my 1-2 shift occurs, ...
Forum: Transmissions and Drivetrain
10-19-2008, 08:25 AM
Replies: 23
Views: 19,649
Posted By mmather1

Re: 700R-4 Wont shift outta first gear.

you can change the springs in the governor, the lighter the spring the later the shift, heavier the spring earlier the shift, Also if you want even later shifts and the springs already really light...
Forum: Transmissions and Drivetrain
10-18-2008, 07:50 PM
Replies: 23
Views: 19,649
Posted By mmather1

Re: 700R-4 Wont shift outta first gear.

Ya the governor controls the shift points, and its common for the gear to wear off (plastic) if it does the trans will not upshift.
Forum: Transmissions and Drivetrain
10-18-2008, 06:18 PM
Replies: 23
Views: 19,649
Posted By mmather1

Re: 700R-4 Wont shift outta first gear.

SOunds like a problem with your governor. there is a round cover near the back on the driver side of the trans. Use a hammer and a screw driver to get the cover off, you will probably find that the...
Forum: Transmissions and Drivetrain
10-17-2008, 06:10 AM
Replies: 6
Views: 4,188
Posted By mmather1

Re: Transgo SK-700G

Thanks, ITs an early model trans so i will use the green. Is there any other tips that might be helpful that you have ran into?
Forum: Transmissions and Drivetrain
10-16-2008, 06:28 PM
Replies: 6
Views: 4,188
Posted By mmather1

Transgo SK-700G

Im working on my valve body, putting in the sk700-G shift kit. When i got to step 7 which is putting the springs on the all the different valves, it gives you a choice between STD gas 2WD ----...
Forum: Transmissions and Drivetrain
10-16-2008, 06:21 PM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

just to let everyone know IT was the reverse input drum causing the problem, it was bent out and causing it to bind up on case and lock up, i put another one in and it was nice and free like it...
Forum: Transmissions and Drivetrain
10-15-2008, 04:59 PM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

Hey everyone, I still have not figured this out, but here is where i am at. If i have everything installed into the transmission except for the pump i can spin my output shaft both ways... One way...
Forum: Transmissions and Drivetrain
10-13-2008, 09:48 PM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

End play is about .020"
Forum: Transmissions and Drivetrain
10-13-2008, 09:39 PM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

The shaft spins clockwise, and locks up counter clockwise
Forum: Transmissions and Drivetrain
10-13-2008, 07:30 PM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

Its almost like something is stoping the reverse input drum from turning.
Forum: Transmissions and Drivetrain
10-13-2008, 10:26 AM
Replies: 9
Views: 9,348
Posted By mmather1

Re: 700r4 build - Output shaft only spins one way

The 2-4 band is not to tight, i Even tryed leaving the band out just to make sure that was not causing it. everything under the input drum spins freely both ways. It appears that the reverse input...
Forum: Transmissions and Drivetrain
10-12-2008, 01:56 PM
Replies: 9
Views: 9,348
Posted By mmather1

700r4 build - Output shaft only spins one way

Hey everyone, just in the process of getting my 700r4 togeher. I torqued down the pump and noticed that my output shaft only spins one way. This is an 86 model transmission. Everthing is seated...
Forum: Transmissions and Drivetrain
10-07-2008, 05:02 PM
Replies: 0
Views: 1,289
Posted By mmather1

early 700r4 clearances

Can someone tell me if this information is right for the clutch clearances in a 700r4, reverse input - .040 - .075?
forward clutch - .040 - .063
3-4 clutch = .060 - .080
Low reverse????

What is...
Forum: Transmissions and Drivetrain
10-03-2008, 08:08 PM
Replies: 6
Views: 8,213
Posted By mmather1

Re: 700r4 reverse input drum clearance

Also in my core i noticed that the reverse input drum has a bellville plate on the very bottom and the one im rebuilding does not, could i use that to take up some of the space? or is there a reason...
Forum: Transmissions and Drivetrain
10-03-2008, 07:27 PM
Replies: 6
Views: 8,213
Posted By mmather1

Re: 700r4 reverse input drum clearance

Where do I get one of these? order through a local trans shop? i have another core but it has the same one in it
Forum: Transmissions and Drivetrain
10-03-2008, 06:09 PM
Replies: 6
Views: 8,213
Posted By mmather1

700r4 reverse input drum clearance

Hey, I'm rebuilding a 86 model 700r4, and my reverse input drum clearance is to high i think. it is .090". What is the clearance supposed to be ? My 4 steels are .075, my frictions are .068 , my...
Forum: Transmissions and Drivetrain
09-27-2008, 10:47 AM
Replies: 2
Views: 1,924
Posted By mmather1

Re: 700r4 Pump Question

Interesting, So someone has put the wrong guts in the pump and changed it to a 7 vane? If they cheaped out like that when putting it together now it makes sense why it did not last. Now is it...
Forum: Transmissions and Drivetrain
09-26-2008, 06:34 PM
Replies: 2
Views: 1,924
Posted By mmather1

700r4 Pump Question

Hey everyone just a quick question, i have been looking around on here and i keep saying that if the front pump casting ends with 732 that the trans is better, because of the 10 vane pump ,and other...
Forum: Transmissions and Drivetrain
07-05-2008, 03:36 PM
Replies: 0
Views: 588
Posted By mmather1

700r4 pressure does not rise when pulling tv cable

I just switched valve bodys on a 700r4 and i noticed when i put a pressure gauge on afterwords, that it has 75 psi, and doesnt rise when you pull the tv cable tight? is there anything i could have...
Forum: Tech / General Engine
06-10-2008, 06:05 PM
Replies: 1
Views: 350
Posted By mmather1

engine noise

I have a 350 with a tpi setup on it, i rebuilt the engine last year, and when i put it away it was fine last year, i started it up this year and it idle fine for like 10 mins then started making...
Forum: Cooling
05-22-2008, 07:32 PM
Replies: 4
Views: 781
Posted By mmather1

Re: Electric fan always running? computer fried?

All the other sensors seem to be reading alright, but it does seem to be running awfully rich like you can smell gas out the tail pipes when its running, other then that it seems to run alright...
Forum: Cooling
05-21-2008, 08:22 PM
Replies: 4
Views: 781
Posted By mmather1

Re: Electric fan always running? computer fried?

The scanner is reading the right temperature (same as my mechanical gauge), it says there is no fan request, when it is on
Forum: Cooling
05-21-2008, 11:30 AM
Replies: 4
Views: 781
Posted By mmather1

Electric fan always running? computer fried?

Hey i have a problem with my 88 tpi , computer 165, when key is on engine not running, the cooling fan doesnt run, when i ground the diagnostic connector it comes on,, also as soon as i start the...
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