1990 Volvo 240 "high idle" Questions

My 1982 Volvo 244 DL idles way too high causing poor fuel economy, etc The manual idle screw is backed off completely and the problem persists. Help! You have a Vacuum Leak.

...high pressure would normally cause a rich condition. clarify your statements. it's not starving for fuel if 100 psi at idle. it's drowning. engines can't "idle" with pedal to floor. just trying to ...

high to low and car wont start sometimes but has no trouble cranking.engine is a 2.2liter volvo 240dl ,1990 These cars used a motor underneath the intake manifold to control the idle. The crank sensor

...high pressure hos,checked return hose for restrictions,strut upper bearings/tierods/ball joints for binding,am running out of things to check! did you check the idle boost switch on pressure ...

...high, press accelerator when in drive and engine stutters and accelerates but stutters again. First noticed: Drove it in hot weather in stop-and-go traffic for 30 mins, then normal speed traffic for ...

...you can warp the cyclinder head and it can cause poor compression and run rough when it idling, at high speed its hard to tell. can also have clog fuel injectors, run 93 octane and add a can of fuel ...

idle air area on throttlbody Based on your description it sounds like the transmission does not shift until the engine is reved pretty high. If that is the case there could be one of several problems.

My volvo 240 DL Station Wagon (a 1987) idles high, and there is a frequent delay in acceleration when I press the gas. These issues MAY be unrelated to one another, as my car has well over 200k miles ...

...idle when i turn my headlights on, I assumed that the high gain/amp fuse to brighten the lights when you depress the brakes was blown, but I checked all fuse poles with a multimeter and they all are ...