Main Menu

911 1970 HOT (ELECTRICAL) START PROBLEM

Electrical

Vehicle Information: Model: 911T 2,2; Year: 1970; Body Type: Coupe; Engine (type, size, modifications): 2,2 STOCK; Total Mileage: 148,000.;

Car starter occasionally won't crank- specifically after a long(45 min. +) freeway drive, with hot outside temperatures (90 deg. +.)Engine oil temp is between 190 and 210 deg.As soon as car is shut down, it can immediately re-start. However, the problem arises if I attempt re-start it about 10-15 minutes after it is "shut-down."Car can re-start about 30 minutes later,when cooler?.Cold starts are flawless.I have a new ign. switch (electrical), new batteries, new Bosch OEM starter.After doing research, I understand the electricaltroubleshooting procedures, i.e., ensuring (8 amps?) gets to terminal #50 on the solenoid.My car is 34 years old and is a "driver"- some tech articles suggest a starter relay "booster" add-on between the ignition switch and the solenoid. I am hesitant to perform this potential "quick fix" as the caveat is that it doesn't solve the specific problem such as faulty (-)ground, older wiring, low conductivity/high resistance from hot wires/starter components, etc.Does this sound like a classic "older car" situation? I am tempted to get an electrical specialist familiar with "older" 911 models.Thanks and regards!

You must log in to view answers associated with technical questions. Join PCA to participate in our community.
0
No votes yet