DieselDayDreamin
Member
Hi all. I hate to start a new thread but after a week of searches here, trying several things suggested in the various threads I've read, I am nowhere with my results.
Subject car is my 2003 Jetta TDI ALH with 159,000 +/- miles. I drove about 50 miles and stopped in a restaurant for a bite to eat last week. When I got in the car to start and leave, the engine at start up revved up to about 1900 RPMs and I thought what the heck?! When I got out on the roadway I noticed low power, it was all I could do to get to 65 MPH. I hobbled home and started reading.
The engine check light never lit up. Before you ask what the DTCs were, I don't have a VAG-COM or code reader (yet). I was just trying to catch something simple first before I got into the big money stuff.
Foot off the throttle pedal, the engine only revs up at start when at operating temperature, but will rev up every time at start up. When cold, it starts normal and idles fine.
What I've done so far to fix the issue(s)... New fuel filter, new air filter, new engine coolant sensor (under thermostat housing), EGR delete kit, inspected intake for blockage (wet with oil and black gunk but wiped out with a carburetor cleaner soaked rag to bare aluminum), cleaned existing MAF sensor (test drove no improvement), installed MAF sensor off my running 2000 TDI (test drove no improvement), looked at O-ring on fuel shut off solenoid (test drove no improvement), installed fuel shut off solenoid from my running 2000 TDI (test drove no improvement), engine's vacuum pump is pulling 27 hg at furthest port (egr), pressure gauge shows about 19 psi boost under load returning to about 1 to 0 psi when let off throttle pedal, Turbo holds vacuum (the VVT actuator) and doesn't stick.
Timing belt was done at 100k miles.
I'm sorta new to these TDIs, but have been driving them since 2011. My 2000 has 339k miles and until I robbed parts from it, was still running fine.
I'm all ears to suggestions! Thanks
Subject car is my 2003 Jetta TDI ALH with 159,000 +/- miles. I drove about 50 miles and stopped in a restaurant for a bite to eat last week. When I got in the car to start and leave, the engine at start up revved up to about 1900 RPMs and I thought what the heck?! When I got out on the roadway I noticed low power, it was all I could do to get to 65 MPH. I hobbled home and started reading.
The engine check light never lit up. Before you ask what the DTCs were, I don't have a VAG-COM or code reader (yet). I was just trying to catch something simple first before I got into the big money stuff.
Foot off the throttle pedal, the engine only revs up at start when at operating temperature, but will rev up every time at start up. When cold, it starts normal and idles fine.
What I've done so far to fix the issue(s)... New fuel filter, new air filter, new engine coolant sensor (under thermostat housing), EGR delete kit, inspected intake for blockage (wet with oil and black gunk but wiped out with a carburetor cleaner soaked rag to bare aluminum), cleaned existing MAF sensor (test drove no improvement), installed MAF sensor off my running 2000 TDI (test drove no improvement), looked at O-ring on fuel shut off solenoid (test drove no improvement), installed fuel shut off solenoid from my running 2000 TDI (test drove no improvement), engine's vacuum pump is pulling 27 hg at furthest port (egr), pressure gauge shows about 19 psi boost under load returning to about 1 to 0 psi when let off throttle pedal, Turbo holds vacuum (the VVT actuator) and doesn't stick.
Timing belt was done at 100k miles.
I'm sorta new to these TDIs, but have been driving them since 2011. My 2000 has 339k miles and until I robbed parts from it, was still running fine.
I'm all ears to suggestions! Thanks
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