It is currently Fri Sep 21, 2018 6:25 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Mon Jul 09, 2018 8:11 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue Jun 06, 2017 8:43 pm
Posts: 44
Location: Vancouver Wa
Year and Trim: 2000 SSEi
RIP 2001 SSEi
Yesterday and earlier today my car drove fine no problems there, but I drove my car to work later today and my transmission started really acting up, all of a sudden if I put my foot slightly more on the pedal to gain some speed it would drop into 3rd gear but it would do that much earlier then it would normally, and then if I went down even a little more it would drop to 2nd gear with maybe a 1/4 or 1/3 throttle total. It did it the whole way to work and it was very worrying and annoying. I also noticed that my boost gauge was reading about 1-2.5 psi of boost even at idle which is really different as it normally sits around -3 or -4 at an idle or no throttle. It wasnt like that yesterday and I feel like that's a hell of a coincidence to happen at the same time. I did add 1 pint of trans fluid before it started acting up as I checked it and it was 1 pint low. Just figured I'd mention that. I have no clue on what to do or check. Any guidance would be lovley. It's a 2000 Pontiac Bonneville ssei. I wonder how the drive home will be, I did hear a shop in my town does free transmission inspections.

Also I forgot to mention my tranny does have a transgo shift kit and has gotten a clean filter and fluid about 4 months ago. It did have a good amount of clutch dust, like that magnet inside the pan was caked.

_________________
Bonnie - 2001 Bonneville SSEi RIP in spaghetti never forgetti
Goldein - 2000 Bonneville SSEi Live forever.
2.25" I/C, Machined LIM, 42.5 Injectors, 3.0 S/C Pulley, 72mm TB, SD Headers+ZZP DP+magnaflow Catback, ZZP tune.


Top
 Profile  
 
PostPosted: Mon Jul 09, 2018 10:35 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Mon May 10, 2010 6:11 pm
Posts: 8941
Location: Chicago, IL
Year and Trim: 2003 SLE
Check for leaks, no slippage at all? Any check engine lights?

_________________
-Car Guy Carl
"Penelope" - 2003 SLE - 177k Miles
"Sydney" - 2000 Honda S2000 - 56k miles
Image


Top
 Profile  
 
PostPosted: Tue Jul 10, 2018 12:29 am 
Offline
SLE Member
SLE Member

Joined: Thu Sep 10, 2015 9:02 pm
Posts: 55
Year and Trim: 2000 SE. 2000 SSEi, 2001 SSEi, 2002 SLE
You could just need a simple tune up. No vac at an idle could also indicate an intake gasket leaking as well. Dont be so quick to blame the transmission. I get people all the time come in with odd shifting problems thinking they need a transmission and it turns out to just be a bad coil or just old plug wires


Top
 Profile  
 
PostPosted: Wed Jul 11, 2018 2:48 am 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue Jun 06, 2017 8:43 pm
Posts: 44
Location: Vancouver Wa
Year and Trim: 2000 SSEi
RIP 2001 SSEi
nos4blood70 wrote:
Check for leaks, no slippage at all? Any check engine lights?


So it did throw a code the night I posted this and its got to do with the TPS code po102 I believe. Though I switched it out with the old TPS sensor I used to use on my old throttle body, and the same problem seemed to happen immediately after i started driving on the highway but not at all when I was driving around town. I've down some testing with torque pro and I ran the throttle position both before and during the malfunction and the actual throttle percentage seemed a little higher then what I was actually doing but the throttle archs seemed perfectly normal even when early downshifting. The graph looks no different when it was malfunctioning when I was accelerating than when I was doing the same before it would start malfunctioning. But I did learn that when my boost gauge is giving a 1 or 2 positive boost pressure when at idle and low throttle its actually a false reading and torque shows that it was at normal operating pressure during that whole time. So I really didnt learn much, besides that the actual sensor doesnt seem to be the problem.

_________________
Bonnie - 2001 Bonneville SSEi RIP in spaghetti never forgetti
Goldein - 2000 Bonneville SSEi Live forever.
2.25" I/C, Machined LIM, 42.5 Injectors, 3.0 S/C Pulley, 72mm TB, SD Headers+ZZP DP+magnaflow Catback, ZZP tune.


Top
 Profile  
 
PostPosted: Wed Jul 11, 2018 10:43 am 
Offline
Posts like an L67
Posts like an L67

Joined: Thu May 01, 2014 9:37 pm
Posts: 1277
Year and Trim: 1993 SLE
1998 SE
2001 SSEI
2002 SSEI
P0102 is not a TPS code; it's a code for the MAF sensor which will make your transmission and engine do very strange things.

The MAF sensor is a crucial part that tells the transmission when to shift, influences when the spark plugs spark and how much gas the engine needs.
When it goes bad, gas mileage suffers, the car runs poorly and the transmission may not shift right.
You can try cleaning up the sensor with MAF sensor cleaning spray because it leaves no dirt-collecting residue and won't melt the plastic.
If the sensor electronics went bad, you'll have to replace it.
Buy a Hitachi MAF0047 or a good used one from a junkyard (clean it with some MAF sensor cleaner).
While many aftermarket parts are junk, Hitachi made the original part and still makes the replacement part in Japan, not China.

If you can turn a screwdriver and unplug a wiring connector, you can replace the MAF sensor yourself , saving the cost of labor and saving money on the part.

Here is an example of how the MAF sensor failing or being dirty can cause transmission issues [url]http://www.tripleedgeperformance.com/Harsh-Shift-P1811.html


Top
 Profile  
 
PostPosted: Wed Jul 11, 2018 1:39 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue Jun 06, 2017 8:43 pm
Posts: 44
Location: Vancouver Wa
Year and Trim: 2000 SSEi
RIP 2001 SSEi
[quote="MKMike"]P0102 is not a TPS code; it's a code for the MAF sensor which will make your transmission and engine do very strange things.

Sorry for the trouble, the code was a Po121 Its diffiently a TPS related problem that I cannot figure out. BTW Forgot to mention I ended up replacing my TPS with another I had, same problem and my throttle numbers from a scanner looked all normal.

_________________
Bonnie - 2001 Bonneville SSEi RIP in spaghetti never forgetti
Goldein - 2000 Bonneville SSEi Live forever.
2.25" I/C, Machined LIM, 42.5 Injectors, 3.0 S/C Pulley, 72mm TB, SD Headers+ZZP DP+magnaflow Catback, ZZP tune.


Top
 Profile  
 
PostPosted: Thu Jul 12, 2018 7:03 am 
Offline
SSE Member
SSE Member

Joined: Tue Jan 07, 2014 4:21 pm
Posts: 117
Year and Trim: 2003 SSEi
1999 Park Ave. Ultra L67
Could be a problem with the connector or wiring. The refresh rate on the scanner may not be fast enough to catch it. Does your scanner do graphing? Monitor the TPS reading while wiggling things, and pushing around lightly on the harness


Top
 Profile  
 
PostPosted: Fri Jul 13, 2018 3:57 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue Jun 06, 2017 8:43 pm
Posts: 44
Location: Vancouver Wa
Year and Trim: 2000 SSEi
RIP 2001 SSEi
maxi426 wrote:
Could be a problem with the connector or wiring. The refresh rate on the scanner may not be fast enough to catch it. Does your scanner do graphing? Monitor the TPS reading while wiggling things, and pushing around lightly on the harness


So I tried that, and at idle it would read about .4% throttle at idle and then every few seconds it would spike to about 0%, maybe im reading the graph wrong and it was running at 4% at idle, I dont know but it kept spiking to 0. not sure if thats normal or not. Didnt give any trouble at idle. My wiring harness was below my throttle body and very close to the crosspipe and almost touching my EGR so it could of been getting really hot, I forgot to move it above the TB after installing my Intercooler. So its back up there, if that doesnt help it atleast gives me peace of mind that those wires arnt getting that hot.

_________________
Bonnie - 2001 Bonneville SSEi RIP in spaghetti never forgetti
Goldein - 2000 Bonneville SSEi Live forever.
2.25" I/C, Machined LIM, 42.5 Injectors, 3.0 S/C Pulley, 72mm TB, SD Headers+ZZP DP+magnaflow Catback, ZZP tune.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours [ DST ]


Related topics
 Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. 2000 SSEi problems: No Start, Security Problems

[ Go to pageGo to page: 1, 2, 3 ]

94SilverSSEi

53

8855

Wed Nov 18, 2015 1:11 pm

Archon View the latest post

There are no new unread posts for this topic. 2000 SSEi Problems

Mystical-Myst

8

2092

Sun Jul 06, 2008 7:49 am

RJGill84 View the latest post

There are no new unread posts for this topic. 2000 ssei problems

floorman87

1

2154

Thu Sep 11, 2014 11:15 pm

frankmickcap View the latest post

There are no new unread posts for this topic. Tons of problems with my 2000 SSEi , I need help!

FWDmoparLOL

5

1651

Sat Apr 20, 2013 12:22 am

justin85 View the latest post

There are no new unread posts for this topic. 2000 ssei supercharger problems

xbr733

2

1108

Tue May 07, 2013 8:43 pm

xbr733 View the latest post

 


Who is online

Users browsing this forum: No registered users and 9 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group


phpBB SEO