I had my timing belt replaced in my passat 1.8 turbo. After it dosnt seem that the turbo is working or its just not getting enough gas, it also redlines longer than usual if you really step on it. I accelerate but not like before. The dealer rechecked their timing marks, the tightness of the belts and they checked the turbo and replaced the waste gate valve, fuel filter, spark plugs. none of this has helped. The dealer is at a lost, they did mention that if something was wrong before the computer and transmission may have compensated for that, and now with the timing reset it may take some time to get back to it. I just don't know what to do.
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Re: low power after timing belt replaced
Providing what the dealer said is true then you can disconnect your positive battery cable for 30 minutes. (PLEASE MAKE SURE THAT YOU HAVE YOUR RADIO CODE BEFORE YOU DO THIS) and the computer will lose all its old memory and this should fix your problem. Good Luck
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More detail would be nice, but I can give you a worst case scenario..
The mk4 Passat 1.8t has been plagued with clogged oil pumps. The oil change intervals might have been too infrequent, sludge builds up, and the only fix is to drop the oil pan and clean or replace the pump.
Just a wild guess but insufficient lubrication and low oil pressure/volume could have led to engine damage. Its hard to say without hearing it.
In the mean time check your maintenance on the car, if it has gone more than 60,000 miles without a new timing belt and tensioner, fix that right away!! When those belts give up the ghost, its time to invest in a new engine.
However you have not mentioned the miles done on your Passat. If you have done the sceduled mandatory service the engine must not loose out on power when given a larger load. However it seems as advised that when the load is required your turbo seems defeated not giving out the extra power. If possible you must take a second opinion if the turbo action can be checked with a lesser cost of service. Also please check on your caravan wheels for any signs of drag, check on tyre pressures, check on fuel type used. Hope I could help. Good day .
Idle is automatically set&monitored with a timing sensor on the camshaft, i found my engine(1.8 20v turbo) would idle low then go high and almost stall sometimes and all i did was remove the fat black pipe on the throttle and clean inside the throat with a cotton rag dabbed in wd40.Hold the throttle open manually and clean on and around the throttle plate as the oil burnt&recycled creates a hard carbon that stops the throttle working correctly.When did you last change the sparkplugs, air filter, oil and oil filter and remove damp from the spark plug area using wd40 on surfaces applied with a cotton rag.These contribute all to your problem.As you dont state milage etc it could be a worn engine or slipped cambelt(1-2 teeth can make a slight diffirence).
gas? diesel? turbo?what engine? whoever did the timing belt needs to recheck their work they did. and verify timing marks. was the low oil level light on or the low oil pressure light. how did you check the sensor? its either good or its bad. a qualified shop need to ck this for you, this in not a easy car to work on, without proper tooling , knowledge and service manual.
dont drive make sure you get the timeing belt put on buy a good repair place. one that wont burn you up belt might be 60 bucks but that engine is 2000.00 used . the worst option is that it might need turbo is there smoke . or rough idle comeing from turbo blade will make a nose if it is going out start and listen to turbo if it coming from there turbo . i should have one used for about 300.00 plus shipping email@example.com