Question about 1998 Volvo S70
Ok. Here we go. It's hard to explain but my Volvo won't run smoothly when holding it at a steady acceleration. It accelerates like the proverbial bat out of hell, runs great and starts easily. It's if I get to 55 it starts running rough - almost like the engine isn't getting power. When I accelerate out of that it runs grand until I try to steady out again - then same thing. Any help would be great as YIKES I just bought the car today!!!!
Sounds like fuel starvation. Would suggest cleaning any filters in the fuel line or replacing.
Also check the stop idle valve. This should be inline in the air intake pipe to the intake manifold..
Remove it and clean with WD40.Make sure you note the orientation of the spring.
To reset the ECU disconnect the battery for 5 minute the reconnect. The ECU should reset to factory settings. Make sure you know radio and alarm codes!
Try petrol additive STP or Redex to clean inside the engine.
Thats as far as my knowledge goes, hope it helps.
Posted on Oct 02, 2008
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Posted on Jan 02, 2017
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