 3800 rpm bucking, ok below, ok above - all gears |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| Axel |
 May 23 2013, 01:31 PM
Post
#21
|
|
Newbie  Group: Members Posts: 17 Joined: 15-May 13 From: Lenexa, Kansas Member No.: 15,875 Region Association: Upper MidWest  |
QUOTE(Axel @ May 22 2013, 07:52 PM)  QUOTE(mburkhart @ May 22 2013, 07:41 PM) I had this exact same issue in my 74 2.0 for 10 years. Numerous mechanics looked at it and were unable to figure out what was going on. I finally took it down to Brad Mayeur and he tried unplugging Temp Sensor #2. For some reason that completely resolved the bucking at 4k rpm. It's worth noting that I have a Petronix installed, so it definitely wasn't the points/condenser. Thanks, I'll give it a shot. Thanks to all for your input. After changing everything out without it having any effect, I checked the wiring for both temperature sensors. Nothing seemed out of place, but after checking these wires, the stuttering and bucking seem to have gone away. (IMG:style_emoticons/default/confused24.gif) |
   |
 
|
| TheCabinetmaker |
May 23 2013, 01:47 PM
Post
#22
|
|
I drive my car everyday Group: Members Posts: 8,377 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Well that's great. If it comes back, you now know where to look.
|
|
|
|
| gunny |
May 23 2013, 07:22 PM
Post
#23
|
|
Member Group: Members Posts: 205 Joined: 17-October 12 From: Madison Al Member No.: 15,051 Region Association: South East States |
Which sensor is #2? I have the same issue.
|
|
|
|
| Axel |
May 24 2013, 10:00 AM
Post
#24
|
|
Newbie Group: Members Posts: 17 Joined: 15-May 13 From: Lenexa, Kansas Member No.: 15,875 Region Association: Upper MidWest |
QUOTE(gunny @ May 23 2013, 08:22 PM) Which sensor is #2? I have the same issue. I don't know which it was. I moved both wires a while I was examining them. I couldn't find any problems with either one, but the physical manipulation of them seemed to fix the stuttering. I must have a short in one of them. |
|
|
|
| TheCabinetmaker |
May 24 2013, 02:46 PM
Post
#25
|
|
I drive my car everyday Group: Members Posts: 8,377 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
temp sensor # 2 is the head temp. Only has one wire. #1 is the intake air temp. The one in the plenum, next to the tps on a 2.0L. It has two wires. The thermo tine switch, which senses ambient air temp, has one wire. It tells the ecu if its cold enough to turn on the cold start valve. Its mounted below the plenum on the bracket that bolts the plenum to the case. Its on the passenger side.
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th June 2026 - 12:12 AM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.