Strange behavior on 4000-5000 Rpm

[Daniel Marques]

I´m finding a problem on my 480:<br>When it reachs about 4000 rpm (mostly on 3rd and 4th gear), gives some kicks like if the car was runing out of gaz and it tends to kindda loose power and the problem disapears after the 5000 Rpm just to happen again when i gear up. As far as Portuguese Volvo says its a common problem for earlier turbo-charged engines on 440 and 480 models but they didnt say why, so i hope that someone here at least heard about it and can give me a hand, for at least i know what im paying for to repair <!--EZCODE EMOTICON START ;) --><img src=http://www.ezboard.com/intl/aenglish/im ... s/wink.gif ALT=";)"><!--EZCODE EMOTICON END--> .<br><br>If this was already discussed in some topic please someone tell me where so i can read it (the messageboard is huge) <!--EZCODE EMOTICON START :D --><img src=http://www.ezboard.com/intl/aenglish/im ... /happy.gif ALT=":D"><!--EZCODE EMOTICON END--> <p><!--EZCODE LINK START--><a href="http://www.pbase.com/motorsportpt/danielgpm" target="_blank">Daniel Marques<br></a><!--EZCODE LINK END--><br><br><!--EZCODE LINK START--><a href="http://www.motorsport.pt.vu" target="blank"><!--EZCODE IMAGE START--><img src="http://pwp.netcabo.pt/0214448601/mspt.gif" style="border:0;"/><!--EZCODE IMAGE END--></a><!--EZCODE LINK END--> <!--EZCODE LINK START--><a href="http://www.volvo-480-europe.org/" target="blank"><!--EZCODE IMAGE START--><img src="http://pwp.netcabo.pt/motorsportpt/club480.jpg" style="border:0;"/><!--EZCODE IMAGE END--></a><!--EZCODE LINK END--></p><i></i>

[Autobahnstormer]

Daniel,<br>I have the same problem with my '88 ES non-turbo. At about 4500 RPM it starts to hesitate, and will not pull beyond 110 mph on the flat. I have changed the fuel regulator a couple of times, and will next try the Fuel filter. I might even put a stronger fuel pump on.<br>It is highly annoying, because I know that the car will go faster, yet tonight I couldn't overtake a Corsa! The turkey wouldn't move out of the overtaking lane, and I couldn't get past him.<br><br>Phil<br> <p></p><i></i>

[dan]

Distributor cap and rotor arm?? Known to be very unreliable in the 340 (same 1.7) although better in the 480. Leaks oil through camseal and eats them in daily use. Consider replacing.<br>Had similar problem but more evident coming on boost at lowish speeds. Insufficient spark under load basically.<br><br> <p></p><i></i>

[martinholmesuk]

Dan, I had the same thing. <p></p><i></i>

[Autobahnstormer]

Dan, <br><br>the Dizzy cap is new, but the rotor is not, and I'm pretty sure that the camshaft oil seal seeps a bit. I'll check both of them, and get back to you, but thanks for the tip.<br><br>Just put winter tyres on the car with hideous Chromed Hubcaps. I need the winter boots (it tends to snow a bit here) and the naked steel wheels weren't doing anything for me.<br><br>Phil, Germany <p></p><i></i>