stumbling acceleration UPDATE
07-07-2013, 06:28 PM
#1
Drifting
Thread Starter
stumbling acceleration UPDATE
For those of you have have seen my whining and tearing my hair out over stumbling acceleration over the last year, you've seen my list of things I've replaced, partially for trouble shooting and partially because I don't have to worry about future failures in the long term.
One of the things I did early on was to pull the TPS switch and open it up and burnish the WOT switch contacts and verify that the TPS was indeed working. I also reworked the AFM and replaced lots of other stuff. I had seen a few comments that even though the TPS may test out ok, there's no guarantee that it's acturally working. Well, I finally bit the bullet and bought a new Bosch TPS and replaced the Bosch copper plus plugs with some NGK plugs and installed them with Indexing shims. The car absolutely hauls *** now. FWIW, the Bosch plugs looked perfect when I read them (slightly tan and proper gap).
Just thought I'd share my hard earned elation and findings.
One of the things I did early on was to pull the TPS switch and open it up and burnish the WOT switch contacts and verify that the TPS was indeed working. I also reworked the AFM and replaced lots of other stuff. I had seen a few comments that even though the TPS may test out ok, there's no guarantee that it's acturally working. Well, I finally bit the bullet and bought a new Bosch TPS and replaced the Bosch copper plus plugs with some NGK plugs and installed them with Indexing shims. The car absolutely hauls *** now. FWIW, the Bosch plugs looked perfect when I read them (slightly tan and proper gap).
Just thought I'd share my hard earned elation and findings.
07-08-2013, 12:25 AM
#2
Late Porkchops
Rennlist Member
Rennlist Member
You will remember way back there I had asked about getting those Bosch plugs out of there and going with the other wires and plugs right . 
Are you coming in close any time soon ?
Are you coming in close any time soon ?
07-08-2013, 01:27 AM
#3
Drifting
Thread Starter
Yeah, I remember that and a lot of other info that could have been a factor in this problem. Anyhow, the TPS was the primary cause of the problem but I decided while I was in there, it was a good time to try some new plugs and giving the "indexing" a try. She really scoots.
No immediate plans to come your way, but will let you know.
No immediate plans to come your way, but will let you know.
07-08-2013, 02:02 AM
#5
Late Porkchops
Rennlist Member
Rennlist Member
Yeah, I remember that and a lot of other info that could have been a factor in this problem. Anyhow, the TPS was the primary cause of the problem but I decided while I was in there, it was a good time to try some new plugs and giving the "indexing" a try. She really scoots.
No immediate plans to come your way, but will let you know.
No immediate plans to come your way, but will let you know.
I know you are having FUN now .
07-08-2013, 07:29 PM
#6
Drifting
Thread Starter
Yes, I sent the injectors to Witch Hunter for rebuild. Also replaced the fuel pump, filter, checked the FPR and FPD, fixed all the vacuum leaks, new wires, rotor and cap, belts, rollers, all the front and rear seals and new clutch and short shifter.
The spark plug gap points towards the passenger fender which is where the intake and exhaust valves are located. Don't know if it's making any noticeable difference but every bit helps, eh wot?
The spark plug gap points towards the passenger fender which is where the intake and exhaust valves are located. Don't know if it's making any noticeable difference but every bit helps, eh wot?