AboutRon Wolff Expertise I am proficient in the following areas of VW Air Cooled Models from 1968-1979:
Vehicles: Super Beetle, Beetle, Thing, Karmann Ghia, Bus, Westfalia/Bus
Areas of expertise years 1968-1979
Engine Rebuild advice for all air cooled engines
VW Brake system replacement
Automatic Stickshift transmission
VW KOOL and DPD air conditioning systems (ex. thing)
Westfalia Electrical system dual battery
Westy Refridge Repair
Westy Cabinet Repair
Westy
AFC Fuel Injection system (1975 bugs) (1975 bus/Westys)
Soundproofing
General type 4 engine rebuild/technical data (i.e. 1.7 ltr, 1.8., 2.0) for buses
VW Air Cooled Beetle and Bus Paint codes
VW Distributor Compatibility Information
Westy component repair
Emission Systems
Exhaust Systems
General Electric System
Door rebuild (windows, seals, vent windows)
Body Panel Removal and general repair (non-welded)
Charging System
Convertible top Installation: Beetle
CV joints
Engine Troubleshooting
Valve Train
Non areas of expertise:
High Performance Modifications
Front end related components
Rear suspension (spring plate adjustment)
Bodywork / painting
Experience
Past/Present clients I often contribute to the westfalia users group technical boards. I have been a member for about 4 years. My usermame is 76Heatwagen
I restore vintage Volkswagens and currently own 4 of them.
Expert: Ron Wolff Date: 2/25/2007 Subject: 98 vw 2.0 jetta gl model cold start problem
Question Every morning I have a hard time starting the car,after a few turns on the ignition swith and pumps on the pedal of the gas the car will start. Then throughout the day the car will start easily with no problems. It only happens in the morning when the car is cold. I have looked at the hayness repair manual for 98 vw jettas. Suggestions for cold start promblems are replacing the coolant temperature sensor or intake air temperature sensor. I have check battery,fuel system,ignition,they seem ok. I would really appreciate if you have any other answers for this problem. thank you.
Answer Hi Jerry,
Fortunately 90% of the time this is a coolant temperature sensor that is faulty.
First, check the contacts to the sensor and make sure the terminals are all clean and shiny. If the contacts look good, replace the sensor.
This should solve your problem. The intake air sensor is generally a reliable part and rarely fails in the cold starting area.
