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Volvo 850 (very) high idle at startup, then up and down

Experiencing high idle at startup?

Idle Air Control Causes Poor Idle

It appears we have a winner. Took out the IAC, sprayed it liberally with carb cleaner (didn’t touch the connector, don’t trust carb cleaner around those, but I might be paranoid) and replaced. Also cleaned the flame trap a bit (wasn’t too bad, actually, same with the throttle body).

It now idles normally! Haven’t taken it out for a test drive yet (transferred the insurance to my 740 wagon, so need to get some temp plates) but just happy that it now idles fine. Productive day overall, fixed the seat heaters and power mirrors (err.. it was the fuse. When I bought the car a little over a year ago, the previous owner said the switches were broken, I believed him.. Live and learn) fixed a few cosmetic bits.. And got it to idle nicely again.

850 GLE, 1995, (very) high idle at startup, then up and down

Bonus! More on the Volvo 850

Volvo unveiled an entirely new model series in June 1991, the Volvo 850 GLT. The Volvo 850 GLT was launched under the banner of “A dynamic car with four world-beating breakthroughs”.

The four new features were: transverse 5-cylinder engine driving the front wheels, Delta-link rear axle which combined the dynamics and ride comfort of independent suspension with the security of a live rear axle, the SIPS integrated side-impact protection system, and the self-adjusting front seat belt mechanism.

The exterior design of the 850 bore a strong Volvo identity, and its 740 and 940 heritage was immediately apparent.

Volvo 850 GLT received a tumultuous welcome; seldom has a new car reaped so many awards as the 850.

Over the intervening years, the 850 series has been expanded with additional variants, among them turbocharged petrol versions and a direct-injection turbo-diesel.

The Volvo 850 was also the first car in the world to offer side-impact airbags, which were introduced in autumn 1994.

In model year 1997, the S70 replaced the 850 Sedan car.

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