1st gear hiccup
#1
10-28-2006, 11:18 PM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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1st gear hiccup
I was wondering what some of you may think this problem may be. When I take off in first at WOT, I tend to get a hiccup right around 4k rpms, then the car takes off again. This never happens in any other gear. I am thinking it is PSM kicking in, but I am not spinning any wheels at all when I go. Could it be when the car is boosting in 1st around 4k, it is spinning the wheels? Also it is alot colder here in MD...around 45-50 degrees. Thanks for any thoughts or info.
#2
10-28-2006, 11:21 PM
Originally Posted by M3CAB
I was wondering what some of you may think this problem may be. When I take off in first at WOT, I tend to get a hiccup right around 4k rpms, then the car takes off again. This never happens in any other gear. I am thinking it is PSM kicking in, but I am not spinning any wheels at all when I go. Could it be when the car is boosting in 1st around 4k, it is spinning the wheels? Also it is alot colder here in MD...around 45-50 degrees. Thanks for any thoughts or info.
#3
10-28-2006, 11:25 PM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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Yep, just did the Beru's at the dealership about 5 months ago, and then changed to the Bosch FR6, during my tranny repair about 2 months ago. I am thinking it may be my MAF or loose O2 sensor since the car sometimes stalls pulling into parking spots or my garage.
#5
10-28-2006, 11:31 PM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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Originally Posted by sharkster
when they stall like that quite often it's some type of vacuum leak? Do a pressure test if you can...
#7
10-28-2006, 11:42 PM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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Thanks, I will look into it tomorrow and see if anything looks loose or out of place at all. I did have a problem with my wastegate hoses not being attached when I got my car back from the dealer.
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#9
10-29-2006, 06:12 AM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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I have the original MAF that came with the car 5 years ago. I have cleaned it many times with Wurth electrical cleaner and have the 1st gen V-Flow...but no CEL's. When it hiccups, it is a very abrupt loss of power...kinda like hitting rev limiter at 4k rpms...but then it takes off right after the hiccup to red line.
#10
10-29-2006, 07:54 AM
Data log the MAF. Tell me what the rate is at idle and the short term trim and I can tell you if it is on the way out.
#12
10-29-2006, 08:30 PM
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Have you tried turning off the PSM as a test? These cars CAN introduce wheelsping in 1st with little provocation.
#13
10-29-2006, 09:14 PM
Join Date: May 2004
Location: Ellicott City, MD
Age: 52
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Originally Posted by ari
Have you tried turning off the PSM as a test? These cars CAN introduce wheelsping in 1st with little provocation.
