|
|
|
|
| Author |
|
|
Registered User
Join Date: Aug 2011
Posts: 3
|
Backfire?
When I test drove my car! 1980 911sc, it idled at 1000 rpm and had a little smoke due to the 40 degree weather, then it disappeared. The car drove great. I picked the car up the next day and put about 60 miles on it. The following day I put about 100 miles, everything was feeling great. Shift was good, no smoke, drove smooth. Later that night, I started the car, it was about 40 degrees out, the idle went to half and when I pulled out it backfired. And then the next day when I started it up for about 5 minutes I felt backfire again. The following day I let the car warm up, the idle was still at half, I let it warm up for about 15 minutes. When I went to drive it backfired, but then everything shifted fine. I am still feeling the backfire in the first shift. Once I hit 2000-3000 rpm I don't hear any more. Any thoughts on what would be causing these backfires? Thanks
|
||
11-11-2013, 05:45 PM
|
|
|
Reiver
Join Date: Nov 2011
Posts: 57,502
|
Sounds like your wur is not doing it's job.
When it is cool my wur raises my idle immediately for the first 20-30 seconds to about 1800 rpm. This is a euro SC but it should be the same.....this is all temperature dependent from the sensor. In warm weather it stays at normal idle. |
||
|
11-11-2013, 05:53 PM
|
|
|
Registered
|
Nope!!!!!
Quote:
It was your AAR that did the job of raising cold idle RPM not WUR. HTH. Tony |
||
|
11-11-2013, 08:34 PM
|
|
|
Registered
|
backfired exaust or intake .
|
||
|
11-12-2013, 04:45 AM
|
|
|
Reiver
Join Date: Nov 2011
Posts: 57,502
|
Tony,
Ok, my mistake. |
||
|
11-12-2013, 07:21 PM
|
|
