Question about Volkswagen Passat
I am getting a low hum and an error code of turbo underboost. my friend checked it with his reader and said when the code was triggered it was going 55mph at 2600rpm and it read the tps at 80%. he said it seemed to be my issue, does the hum and underboost seem to be a possible problem with a bad throttle body?
Has to be at a shop that works on turbos
None of the code checking etc, without vehicle
system knowledge, is of any value to you
Throttle Body is not humming
If you can buy factory manuals for lots of money,
maybe you can work on it, when you have trouble charts to follow
Throttle Plate Angle or % is subject to constant change, so unless
your friend knows the vehicle systems, then you wouldn't be here
Posted on May 15, 2014
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Posted on Jan 02, 2017
Hi, Take a little time to check all earth mounts,There are some fine earthwires under the looms running from air intake if one of these is broken or dirty it can cause all the symptoms you describe. All the best. Phil
Posted on Sep 11, 2008
no need to replace the throttle body , and i think that you make a test before to buy any piece . disconnect the negative battery terminal few minutes, then connnect and start engine again, drive few minutes by observing the engine, if light comes again, replace only map sensor ,good luckl
Posted on Apr 24, 2009
SOURCE: 1993 Volvo 940 error code 232
2-3-2* Fuel trim (lambda control) too lean or too rich at idle }If too rich: high fuel press., leaking injector } various driving problems Fuel trim (lambda control) too lean at idle Oxygen sensor
Posted on Jun 22, 2009
I think your battery replacement and trouble code are coincidental crazy as it may sound but it happens. Ford came out with a computer update to repair the p0506 problem. This code is a common problem. The only way to fix it is to have your vehicles computer reprogrammed with the update. Either at a Ford dealer or a shop that has the equiptment to do this procedure. Not many shops have this equiptment.
Posted on Oct 30, 2009
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