(800) 853-2651
SHOP NOW

OT - Any VW Mechanics or somebody familiar w/ Jetta

K

Kirk Grau

Member
Posted this on a VW forum, but usually get better help here.

Daughter's car. She has an issue where the car suddenly started running pretty poorly. Engine stumbles at idle as well as higher RPM and is short of power. Nursed it to my driveway and read codes and all I get are error codes. CEL is clearly on (sometimes flashing), but reader does not recognize it as on and can't reset. Had one code indicate a cylinder 3 misfire so went ahead and put coil into it as well as plugs/wires. No help. Codes are meaningless only indicates something like "ER - no definition available"

Could the ECU have failed? How would I tell?

Thanks,

Kirk
 

Is it muti port injection? If so that misfire could be the injector. Sons car did that. new injector fixed it with up. Also check the fuel pressure regulator and fuel pressure. Supprising how many FI cars and trucks have been fixed witha simple fuel filter change.

Rick
 
We have a Jetta TDI that had similar issues. It ended up being the air-mass sensor. Bora Parts is one place you can get reasonably priced parts.
 
Should have added it is a 2.0 gas engine.

Hate to throw more parts at it than I have without a little indication of what system is involved.

Kirk
 
was it raining when this happened? my daughters car had a cracked coil pack that made the car do about the same things as your daughters. i took the coil off and applied jb weld to the case. fixed it right up
 
I wasn't raining, but I have done coil, plugs, and wires with no change in symptoms. Just wish it would spit some sort of code out to suggest a direction to go.

Thanks,

Kirk
 
See if you can find someone with a VAG-Com. That is Audi groups proprietary obd system. With that cable and the right software you can see right into the whole shebang to view systems. There is a list here of guys who have them. Some want money, some just want beer.

http://forums.vwvortex.com/showthread.php?4991419

http://maps.google.com/maps/ms?hl=en&ie=UTF8&msa=0&msid=212025731095460330953.000492929ee4cc223453e&ll=41.442726,-97.294922&spn=29.878055,86.572266&z=4&iwloc=000492ce69bc1ee2eac43
 
Kirk,

I've never had a Jetta, but I had a 1987 Fox fuel injected gas Volswagen (1.8 L ?)a few years ago. Engine would run fine then bog down, especially under load. Let car sit a while and it would start right back up and run fine for a while.

After much problem determination by supposedly qualified Volkswagen technicians, it ended up being a bad fuel pump in the fuel tank.

Good luck with your diagnosis.

Tom in TN
 

How much fuel is in the tank? There was just a show on yesterday kinda like a television car talk where these two guys go and fix cars that noone else can figure out. Had an Audi doing about what you are saying (don't remember the codes) and the pickup tube in the tank had a rust hole. When under a quarter or so tank, it would suck air and car wouldn't run right.
As far as your CEL, have you treid disconnecting the battery for a couple minutes to reset?
 
(quoted from post at 12:08:32 09/05/11) Posted this on a VW forum, but usually get better help here.

Daughter's car. She has an issue where the car suddenly started running pretty poorly. Engine stumbles at idle as well as higher RPM and is short of power. Nursed it to my driveway and read codes and all I get are error codes. CEL is clearly on (sometimes flashing), but reader does not recognize it as on and can't reset. Had one code indicate a cylinder 3 misfire so went ahead and put coil into it as well as plugs/wires. No help. Codes are meaningless only indicates something like "ER - no definition available"

Could the ECU have failed? How would I tell?

Thanks,

Kirk
Click to expand...

Always like it when others follow up with results so here is mine.

Rain let up yesterday and I went out and had a final look at things before punting and taking it down to the mechanic. Found a vacuum leak at the fuel pressure regulator. Runs fine again, probably kind of a "double whammy", leak would lean things out and pressure regulator not going to work right.
 
You must log in or register to reply here.

Similar threads

K
OT - Any VW Mechanics or somebody familiar w/ Jetta
Replies
6
Views
739
Don-Wi
D
K
UPDATE: OT - Any VW Mechanics or somebody familiar w/ Jetta
Replies
1
Views
1K
Anonymous-0
A
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top