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88 renix help

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Old Aug 9, 2013 | 11:55 AM
  #16  
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Originally Posted by 884x4
Ohh alright, Well it seems that adjusting the tranny side did not fix my issue
TPS is probably bad on the engine side then.
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Old Aug 9, 2013 | 12:47 PM
  #17  
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From: Justin, TEXAS
Year: 1988
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Ill pick one up and let you know how it turns out
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Old Aug 19, 2013 | 03:53 PM
  #18  
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From: Justin, TEXAS
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well the new napa tps is in and adjusted from the engine side. it fixed my high idle on start up but Im still running very high rpms at highway speeds. I wonder if im running high rpms at all speeds? 3rd gear at 1500 rpms im going 30, 4th great at 1600rpms im going 45, any thing above 50 im well above 2200, it was even at 2900 going 75
what else could be the cause? any other grounds? could it be worn piston rings? I think my compression is crap
I also got my second cps(this time from napa) keepin my fingers crossed this one doesn't crap out too
thanks for all the help
-adam
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Old Aug 19, 2013 | 04:16 PM
  #19  
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Sometimes I'll put mine in 3rd coming down a hill at highway speed to save a little brakes. Later if I notice my rpm is high, it reminds me to put it back in drive. Idk if that relates, but I see you mention 3'rd and not drive.

That's one I don't fully get.."drive" locks the torque converter with that (third) solonoid?

I don't have a tack, but 2,900 at 75 doesn't alarm me...

The connectors to your trans solenoids are there rear of the dipstick, the grey maybe. No harm in cleaning those....(the other, black, is the NSS). If I have that right.
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Old Aug 19, 2013 | 04:28 PM
  #20  
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From: Justin, TEXAS
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Originally Posted by DFlintstone
Sometimes I'll put mine in 3rd coming down a hill at highway speed to save a little brakes. Later if I notice my rpm is high, it reminds me to put it back in drive. Idk if that relates, but I see you mention 3'rd and not drive.

That's one I don't fully get.."drive" locks the torque converter with that (third) solonoid?

I don't have a tack, but 2,900 at 75 doesn't alarm me...

The connectors to your trans solenoids are there rear of the dipstick, the grey maybe. No harm in cleaning those....(the other, black, is the NSS). If I have that right.
I have to be driving above 40-45 to even get it to shift above 3rd gear, and it has to be for a little bit of time too. so if im driving in the city its pretty much always in 3rd gear. ill check those solenoids. thanks
also-im on 31's and stock gearing, shouldn't that lower the rpms at highway speeds?

Last edited by 884x4; Aug 19, 2013 at 04:32 PM.
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Old Aug 19, 2013 | 05:14 PM
  #21  
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Try # 10 in my tips.

Did you know the "trans shift logic" circuit grounds at the engine dipstick tube stud, along with the TCU itself?

That's covered in post #1.
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Old Aug 19, 2013 | 05:23 PM
  #22  
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Yea, larger wheels will lower your RPM's at all speeds. Don't forget it will also make your speedo and odometer under read as well. You can google conversion charts. I prefer to use % age. For instance mine reads 4% under, so 50 mph on the speedo is really 52. If the odometer says I went 100 miles, I really went 104 miles.

I just use the county sign posts on long trips to figure where I'm at. Any two might be off so I use two or three 10-20 mile segments for what I guess to be a somewhat accurate figure. If what you get squares with a mile in a minute, and those road-side radar signs, it's got to be pretty close.
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Old Aug 19, 2013 | 05:24 PM
  #23  
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From: Justin, TEXAS
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Originally Posted by cruiser54
Try # 10 in my tips.

Did you know the "trans shift logic" circuit grounds at the engine dipstick tube stud, along with the TCU itself?

That's covered in post #1.
I did all of one so that should be covered, ill do ten and get back to yall
thanks
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Old Aug 19, 2013 | 06:09 PM
  #24  
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How's your tranny fluid look and smell? My 89 was shifting really strange and not down shifting. Fluid was toast. Golden brown and burnt smell. I dropped 4 quarts add 4 quarts and just that was a mass improvement. My next 4 quarts are getting dropped tonight. Then the whole works and a filter.
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Old Aug 19, 2013 | 06:13 PM
  #25  
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From: Justin, TEXAS
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Originally Posted by DFlintstone
Yea, larger wheels will lower your RPM's at all speeds. Don't forget it will also make your speedo and odometer under read as well. You can google conversion charts. I prefer to use % age. For instance mine reads 4% under, so 50 mph on the speedo is really 52. If the odometer says I went 100 miles, I really went 104 miles.

I just use the county sign posts on long trips to figure where I'm at. Any two might be off so I use two or three 10-20 mile segments for what I guess to be a somewhat accurate figure. If what you get squares with a mile in a minute, and those road-side radar signs, it's got to be pretty close.
yeah I know I used a speedometer app on my phone, I figured that was accurate
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Old Aug 19, 2013 | 06:15 PM
  #26  
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Originally Posted by Black89
How's your tranny fluid look and smell? My 89 was shifting really strange and not down shifting. Fluid was toast. Golden brown and burnt smell. I dropped 4 quarts add 4 quarts and just that was a mass improvement. My next 4 quarts are getting dropped tonight. Then the whole works and a filter.
it looks like it just came out of the bottle, thanks though
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Old Aug 19, 2013 | 06:28 PM
  #27  
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Originally Posted by 884x4
I did all of one so that should be covered, ill do ten and get back to yall
thanks

Whaddya mean, all of one?
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Old Aug 19, 2013 | 07:30 PM
  #28  
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Originally Posted by cruiser54
Whaddya mean, all of one?
I did all of tip #1 haha
I just sprayed out the connections, im about to drive it so ill get back to ya
thanks
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Old Aug 19, 2013 | 07:39 PM
  #29  
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Originally Posted by 884x4
I did all of tip #1 haha
I just sprayed out the connections, im about to drive it so ill get back to ya
thanks
No slacking or skipping steps!!!
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Old Aug 19, 2013 | 07:57 PM
  #30  
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Originally Posted by cruiser54
No slacking or skipping steps!!!
ahh you caught me! alright, I couldn't find anything under the glove box? got a pic?
thanks
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