'92 305TPI from an auto now in a 5spd
07-28-2010, 10:11 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
'92 305TPI from an auto now in a 5spd
I put a 92 305 TPI motor from an auto car in my 83TA that has a 5 spd. With the factory auto programming, it pops loud out the exhaust when in gear but coasting and it nearly dies when taking it out of gear and coasting. When I use the 5 spd programming, it cures those problems, but the SES light stays on and the idle is 1100, and it runs just a little rougher. I know the two motors have different cams, but does anyone know where I might find a bin that would work well for this combo? So far I haven't had much luck using the bin search engines listed in some of the sticky threads. Thanks for any help.
Ryan
Ryan
07-28-2010, 11:16 PM
#2
07-28-2010, 11:31 PM
#3
Junior Member
Thread Starter
Join Date: Jul 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Re: '92 305TPI from an auto now in a 5spd
No I don't have a VSS at all. I thought it was odd that this did not cause the SES light to be on with the automatic programming.
07-29-2010, 02:06 PM
#5
Member
Join Date: Jun 2001
Location: Eh?
Posts: 391
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1988 Monte Carlo SS
Engine: 5.7L TPI
Transmission: T5
Axle/Gears: 3.73
Re: '92 305TPI from an auto now in a 5spd
Did you have a CCC system before? If so, you can feed the 2000ppm VSS signal from the old vss buffer into the optical input of the 1227730 ECM and flip a bit in the eeprom to use that input instead of the 4000ppm magnetic VSS input. The details are buried in this forum on how to do that.
Or you could buy inline 4000ppm VSS and wire it up to the proper inputs on the ECM.
It'll stall out and act pissy on you until you fix this...
Or you could buy inline 4000ppm VSS and wire it up to the proper inputs on the ECM.
It'll stall out and act pissy on you until you fix this...
07-30-2010, 10:19 PM
#6
Junior Member
Thread Starter
Join Date: Jul 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Re: '92 305TPI from an auto now in a 5spd
I ordered a retrofit 4000 pulse VSS. It makes sense that this may help so I will try it. I will post back as to whether it fixes it. Thanks for the help!
08-02-2010, 08:31 PM
#7
Junior Member
Thread Starter
Join Date: Jul 2009
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Re: '92 305TPI from an auto now in a 5spd
Ok I am getting desperate now. I got the VSS installed, and I have tried both a 5 speed and auto chip. Now it seems that the trying to stall when taken out of gear problem is fixed, but the popping is just as bad. To solve the popping problem I have chased exhaust leaks (remounted headers with new gaskets, tried to find any leaks at all) and that didn't fix it. I replaced the whole ignition system (module, coil, cap, rotor, plugs, wires), replaced the O2 sensor, bought a VSS, tried both types of chips, and I just cannot figure out what is causing it to pop. I checked my fuel pressure, and it is where it should be, the fuel pressure regulator holds vacuum (diaphragm intact), I have readjusted my valve lash. If any of you have any ideas, I would be forever grateful, and I will try just about anything at this point. I have been working on this swap for 8 months now and just can't get it to run right. Thanks for the help, if you can.
Ryan
Ryan
Thread
Thread Starter
Forum
Replies
Last Post
Linson
Auto Detailing and Appearance
12
10-01-2015 09:50 PM
