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Search: Posts Made By: Lorenfb
Showing results 1 to 25 of 492
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Forum: 993 Forum
06-09-2023, 01:36 PM
Replies: 51
Views: 17,419
Posted By Lorenfb

Good analogy! Here're some actual data related to...

Good analogy! Here're some actual data related to "tuning"; http://forums.pelicanparts.com/porsche-911-technical-forum/683503-performance-tuning-myth.html
Forum: 993 Forum
02-17-2023, 02:13 PM
Replies: 51
Views: 2,325
Posted By Lorenfb

The Bosch Hammer should be able to communicate...

The Bosch Hammer should be able to communicate with the alarm ECU when using the 16 pin adapter cable. You should also be able to communicate will the other ECUs, e.g. CCU, ABS, Air Bag.
Consider...
Forum: 993 Forum
02-17-2023, 02:06 PM
Replies: 51
Views: 2,325
Posted By Lorenfb

Yes, I can repair the alarm ECU. I also have...

Yes, I can repair the alarm ECU. I also have stock alarm ECUs. You can send for it testing, at no charge.
Forum: 964 Forum
10-25-2022, 12:16 AM
Replies: 20
Views: 1,773
Posted By Lorenfb

It's good that you, (pretarch AKA - Specialized...

It's good that you, (pretarch AKA - Specialized ECU Repair/ECU Doctors), are in involved in resolving your warranty issue with the OP.
Forum: 964 Forum
07-23-2021, 11:54 AM
Replies: 9
Views: 1,605
Posted By Lorenfb

Wiring info: ...

Wiring info:


https://cimg8.ibsrv.net/gimg/rennlist.com-vbulletin/1441x874/993obc_4ac99a7118118bad2192c58e77b4d6c197bead71.jpg
Forum: 911 Forum
07-22-2021, 03:58 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

That's good. Why are you wasting money...

That's good.



Why are you wasting money when your CDI unit tested OK?
I've been repairing Bosch CDI units for over 30 years, and for the most part, they are very reliable.
Furthermore, why...
Forum: 911 Forum
07-20-2021, 04:46 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

No, as long as the pin 31/1 has a good chassis...

No, as long as the pin 31/1 has a good chassis ground.
Forum: 911 Forum
07-19-2021, 09:58 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

So now you have two non-functioning CDIs (loaner...

So now you have two non-functioning CDIs (loaner & original 78SC), but still one good CDI on the 77S, right? You have two working coils, the 77S one and the silver from the 78SC, right?
Forum: 911 Forum
07-18-2021, 07:21 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

You need to call the CDI rebuilder; 1. To...

You need to call the CDI rebuilder;

1. To determine whether your CDI was tested and the test results. And if it failed, what component failed.
This could help determine the main cause of the CDI...
Forum: 911 Forum
07-16-2021, 06:37 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

Maybe it's been rebuilt by a prior owner. Was it...

Maybe it's been rebuilt by a prior owner. Was it an original Bosch, or one that looked like Bosch?
Forum: 993 Forum
07-16-2021, 01:34 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

They all are! Remember, it's mechanical system,...

They all are! Remember, it's mechanical system, where the failure rate increases with usage and time.
Forum: 993 Forum
07-16-2021, 01:31 PM
Replies: 33
Views: 3,225
Posted By Lorenfb

Doubt there's been any implication that the DME...

Doubt there's been any implication that the DME ECM is the source of the problem. Using a diagnostic tester, as an example, can provide an insight about the functionality of the fuel system, i.e....
Forum: 993 Forum
07-15-2021, 11:38 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

Actually, the operation is quite simple, once you...

Actually, the operation is quite simple, once you understand the basic operation as provided by the link in post #3.
Typically, some waste money on unnecessary parts and labor, the result of bad...
Forum: 993 Forum
07-15-2021, 07:47 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

The other input many forget is the oil pressure...

The other input many forget is the oil pressure switch (intermittent), i.e. engine not running.
Forum: 993 Forum
07-15-2021, 07:26 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

If that doesn't find the problem, then it's in...

If that doesn't find the problem, then it's in the control unit where over 90% of the problems occur;

...
Forum: 911 Forum
07-15-2021, 05:12 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

But is yours really bad? Doesn't it need to be...

But is yours really bad? Doesn't it need to be fully tested before assuming it's bad? And if your engine doesn't start with the "loaner" and your unit is OK,
you get a partial refund of what you...
Forum: 993 Forum
07-15-2021, 04:55 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

No Yes, and that was fully explained...

No



Yes, and that was fully explained in the previous post's link.


https://cimg2.ibsrv.net/gimg/rennlist.com-vbulletin/1438x869/cabtopmod_617b528b68896d94b2cf0dab3fe7d27f76bb07dc.jpg
Forum: 993 Forum
07-15-2021, 02:47 PM
Replies: 13
Views: 3,194
Posted By Lorenfb

Correct (for the top motor), but the gear...

Correct (for the top motor), but the gear alignments in the locking motors could very likely be the problem.
Read here under Porsche Cab Top for a description of operation,...
Forum: 911 Forum
07-15-2021, 01:35 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

Do a Rennlist search for Bosch CDI repairs. There...

Do a Rennlist search for Bosch CDI repairs. There are many sources for CDI repairs under $400.
Forum: 911 Forum
07-14-2021, 05:52 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

Ask if he can provide a "loaner"; 1. You...

Ask if he can provide a "loaner";

1. You send your CDI in.
2. He provides a rebuilt for testing (one week). You pay the exchange CDI rebuilding cost. He waits for your test and just holds your...
Forum: 911 Forum
07-14-2021, 04:51 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

And you don't even know whether it's bad!

And you don't even know whether it's bad!
Forum: 993 Forum
07-14-2021, 02:11 PM
Replies: 33
Views: 3,225
Posted By Lorenfb

Carefully spray carb cleaner around the base of...

Carefully spray carb cleaner around the base of each injector to check for poor injector sealing.



That's normal.

Don't waste time and money using the shotgun approach for troubleshooting!...
Forum: 911 Forum
07-13-2021, 09:29 PM
Replies: 34
Views: 6,209
Posted By Lorenfb

Don't waste your time now replacing the green...

Don't waste your time now replacing the green wire, since you get the proper signal to the CDI.




Just because the CDI whines, don't assume that the CDI is fully functional. You need to either...
Forum: 993 Forum
07-13-2021, 09:11 PM
Replies: 33
Views: 3,225
Posted By Lorenfb

If your 993 is a '96 or later, consider using an...

If your 993 is a '96 or later, consider using an OBDII scanner to monitor the long & short term fuel trims. This will provide insight into your fuel mixture,
which should help you eliminate fuel...
Forum: 993 Forum
07-13-2021, 04:04 PM
Replies: 33
Views: 3,225
Posted By Lorenfb

That's about a 20% increase. Typically the...

That's about a 20% increase. Typically the resistance should decrease. Compare that value to the other coil in you car.
Showing results 1 to 25 of 492
 
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