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> Diagnosing an intermittent D-Jet problem..., Hesitation under load at 2800 RPM but only when cold...
MikeInMunich
post Oct 10 2016, 02:46 AM
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Hi again from Munich!

Here are the details. But please see update from Feb. 5th below!

I have a D-Jetronic intake. Under load and at about 2800 RPM Im experiencing an intermittent hesitation. Yesterday my son and I took the car out for a drive from Munich, towards Innsbruck and back and we ran into a bit of rain coming along the Aachensee (lake), and this hesitation got worse. Then I remembered the only other time I've had this car out with 100% humidity and that it wasn't running well on that day either, so this is apparently a clue.

So what can this be? And why does it happen at all, even when it's not raining, albeit not as noticeably? Is there a cure?

Experts / senior gurus out there, thank you for your time and sharing your knowledge and experience, in advance!

With kind regards,

Mike in Munich
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Posts in this topic
MikeInMunich   Diagnosing an intermittent D-Jet problem...   Oct 10 2016, 02:46 AM
The Cabinetmaker   First suspect would be the tps adjustment. Usually...   Oct 10 2016, 09:54 AM
MikeInMunich   Hmmm. A mechanic had checked that here just a few ...   Oct 10 2016, 10:18 AM
MikeInMunich   First suspect would be the tps adjustment. Usuall...   Dec 7 2016, 01:27 AM
RobW   Dads car had the same kind of RPM hesitation back ...   Oct 10 2016, 10:02 AM
MikeInMunich   Thanks, I'll check that out. Good tip.   Oct 10 2016, 10:16 AM
MikeInMunich   :beer2:   Oct 10 2016, 10:17 AM
914_teener   Mike..... Here would be my thoughts and in this o...   Oct 10 2016, 11:52 AM
MikeInMunich   Mike..... Here would be my thoughts and in this ...   Oct 10 2016, 01:07 PM
MikeInMunich   Mike..... Here would be my thoughts and in this ...   Oct 11 2016, 12:01 AM
914_teener   mark at 914 rubber sells the boards...IIRC That.s...   Oct 10 2016, 01:10 PM
MikeInMunich   mark at 914 rubber sells the boards...IIRC That....   Oct 10 2016, 01:14 PM
pbanders   Hi again from Munich! Here are the details. ...   Oct 10 2016, 02:18 PM
socal1200r   We just had a discussion among us so-called ...   Oct 11 2016, 11:04 AM
Dave_Darling   Worth double-checking all the electrical connectio...   Oct 10 2016, 04:54 PM
mepstein   Worth double-checking all the electrical connecti...   Dec 7 2016, 09:12 AM
BeatNavy   First of all, I agree with DD - check your electri...   Oct 11 2016, 04:03 AM
MikeInMunich   Checked the CHTS connection...seemed to be OK, BUT...   Oct 11 2016, 09:28 AM
BeatNavy   Checked the CHTS connection...seemed to be OK, BU...   Oct 11 2016, 10:56 AM
MikeInMunich   I don't think that had anything to do with th...   Oct 11 2016, 11:30 AM
BeatNavy   There's a hole in the engine tin next where th...   Oct 11 2016, 11:11 AM
MikeInMunich   Tested CHTS, <300 Ohms when warm. Approx. 2000 ...   Oct 13 2016, 01:10 AM
MikeInMunich   Is this a clue? Driving this evening, with a fault...   Oct 13 2016, 11:33 AM
pbanders   Still sounds like an intermittent contact issue. ...   Dec 7 2016, 08:07 AM
StratPlayer   I was having that problem,,,hesitation,,,,, I just...   Dec 8 2016, 11:21 AM
MikeInMunich   I was having that problem,,,hesitation,,,,, I jus...   Dec 9 2016, 02:23 AM
pbanders   More ignition checks: Verify that your vacuum adva...   Dec 8 2016, 07:10 PM
MikeInMunich   Hi Brad, thanks for all your advice. I will be loo...   Dec 9 2016, 02:27 AM
socal1200r   Hi Brad, thanks for all your advice. I will be lo...   Dec 9 2016, 06:04 AM
Matty900   Gary Cotton did 2 great videos on this. Part 1 htt...   Dec 9 2016, 08:20 AM
MikeInMunich   Thanks again guys! Huge help!! Have a...   Dec 9 2016, 08:45 AM
MikeInMunich   Update, edited! Unfortunately I don't tru...   Feb 5 2017, 12:55 PM
Bob L.   Update, edited! ... Also, when the engine is...   Feb 15 2017, 09:41 AM
Jeff Bowlsby   The ECU knob is a fine adjustment to fuel mixture ...   Feb 15 2017, 09:50 AM
MikeInMunich   :bump: Seeking expert's feedback on D Jet Prob...   Feb 14 2017, 01:58 PM
914_teener   So did you do everything Brad noted? I would sugg...   Feb 14 2017, 02:38 PM
MikeInMunich   So did you do everything Brad noted? I would sug...   Feb 14 2017, 03:28 PM
914_teener   So did you do everything Brad noted? I would su...   Feb 14 2017, 04:01 PM
MikeInMunich   If you have checked everything he posted........i...   Feb 15 2017, 01:36 AM
MikeInMunich   Update: Disconnected the TPS today and tested...Pr...   Feb 15 2017, 01:50 AM
Dave_Darling   The "AT idle" is determined by the idle ...   Feb 15 2017, 02:09 PM
MikeInMunich   Hi Dave, thanks for chiming in again here. I...   Feb 15 2017, 05:23 PM
914_teener   Shiza Mike! That is an important detail. Gues...   Feb 15 2017, 09:45 PM
MikeInMunich   Update!! Interesting "insight"? ...   Apr 2 2017, 04:08 AM
MikeInMunich   Problem solved, it was the air temp sensor! A...   Jun 25 2017, 03:30 AM


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