What causes a VW Jetta to run rough?
Those Jettas had bad coil packs that would cause the engine to stumble, or run rough. VW had a major recall campaign to replace them. Possibly this one has a bad coil pack that wasn’t replaced. There are plenty of other possible causes, but the faulty coil pack issue comes to mind first. 98caddy July 6, 2016, 4:54am #3
How do you replace a temperature sensor on a Jetta?
Loosen your coolant reservoir cap to release any built up pressure, then tighten the cap back up. By doing this you create a vacuum seal so when you pull out the bad sensor very little to no coolant will leak out while you are making the swap.
How much is a 2001 VW Jetta worth?
I’m considering a 2001 VW Jetta 1.8T with 135,000 miles that the owner is selling for $1,000.00 because it is “starts and runs but it’s difficult get it accelerated and it’s just running rough “.
How to replace a temperature sensor MkIV VW?
Make sure your car is completely cooled down. Loosen your coolant reservoir cap to release any built up pressure, then tighten the cap back up. By doing this you create a vacuum seal so when you pull out the bad sensor very little to no coolant will leak out while you are making the swap.
What was the code for the exhaust problem?
First of all, there were two codes; one was “P0118 – Engine Coolant Temperature Circuit High Input”, and the other was “P0420 – Catalyst System Efficiency Below Threshold (Bank 1)”. At least one of these codes may be explained by the first photo of the exhaust problem.
What are the problems with a VW 1.8T engine?
The 6 Most Common Volkswagen 1.8t Engine Problems 1 Oil sludge buildup 2 Ignition coil pack failure 3 Water pump failure 4 Vacuum system leaks 5 Timing Belt & Tensioner failure 6 Coolant sensor failure
What causes a Volkswagen Jetta to misfire?
It will run rough at idle and looses power at speed. It has died 3 times. I am in the beginning phase of trouble shoot and jave not yet put a scanner on it. It feels like something is shorting and causing a misfire. The wife Jas complains of a intermittent hiccup when driving. It was taken to dealer, they found nothing….
Why does my VW Jetta keep acting funny?
I have had my jetta for two years. It started acting funny when driving and car would loose power. So I replaced spark plugs , spark plug wires and battery. It was fine for a few months . Then it started idling the ignition coil. Worked ok then started shaking cooling is worse. I took it and had it diagnosed was misfiring.