Question about 1989 Volvo 740

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When my volvo boosts it bogs and sputs until i lower the rpm can anyone answere this for the pure fact i chanced cap rotor spark plugs wires fuel filter and still the same probnlem can go up to 3500 rpm fine right after that it starts losing power and blows smoke

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  • 49 Answers

Check you have the right spark plugs wires going to the right sparks plug. Check the vaccuum hose from carburettor is connected to the distributor of sparks.

Posted on Nov 29, 2009

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Posted on Jan 02, 2017

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1 Answer

Have 82 f100 with 3.8 motor when I let out clutch it bogs down ?


truck got tune up recently? good spark from each plug (ignition coil, distributor cap & rotor if equipped, spark plug wires), good fuel delivery, idle rpm & ignition timing set to specs? transmission turns freely?

Oct 07, 2015 | Cars & Trucks

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MISFIRING AND I CAN'T FIGURE OUT WHY, DOES ANYONE HAVE AN ANSWER? NEW WIRES,NEW PLUGS,NEW CAP AND ROTOR AND CAP, NEW FUEL PUMP, NEW FUEL FILTER,


Hi Tom:
No make or model given so don't know type of ignition.
Would it be a big deal for you to do a compression test?
That might give a hint.

Jul 29, 2015 | Cars & Trucks

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Replaced bad fuel pump, installed new relay and fuel filter, engine turns over but is not firing on..... positive the fuel pump is pumping gas and checked to see if gas was going thru fuel filter. Tried...


Hi, Ok you have confirmed that it's not a fuel problem. You need to check for spark. Pull the coil wire off of the coil(secondary lead-looks like a spark plug wire) Have some one crank it over and listen for a popping sound. IF yes, spark is at the coil, that means all ignition sensors are working. Next check for spark at ends of wires after cap. IF no replace cap and rotor. IF yes remove a couple spark plugs and check for fouling(wet, fuel etc...) IF yes replace or clean plugs and retest for starting. IF no spark is present at coil you need to scan computer and watch for rpm signal. IF no rpm signal, replace crankshaft sensor with OEM delco part. BIGGEST problem with these engines is Cap and Rotor burn out.

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Where is the rotory cap on a 1989 740 volvo


The rotor cap (i am not sure if you meant distributor cap or rotor button, but ill answer them both) on a 1989 Volvo 740 is located directly at the back of the engine block, connected to the cam shaft. it is the orange plastic device that the spark plug wires snap into. the rotor button is the orange plastic part found inside of the distributor. to get to the rotor button you would have to remove the distributor with a 8 or 10mm wrench (sorry I cant remember which), there are 3 bolts to remove. it should take less then 5mins to do this. GOOD LUCK:)

Jan 10, 2010 | 1989 Volvo 740

3 Answers

Spark from coil but not from plugs


Hello;
Take the distributor cap off, and turn the engine over. Does the rotor turn? Then pull the #1 spark plug and with your finger over the spark plug hole , tap the engine over to top dead center. See where the rotor is pointing. Also check to ensure your points are opening and closing. With an ohm meter make sure you have continuity through the carbon for the coil in the cap. Hope it helps.
Thanks;
Rich
RPM Northwest

Mar 31, 2009 | Volvo 240 Cars & Trucks

1 Answer

1989 pontiac gta won't start when hot and runs bad after warm


i melted my module off of mine 89 gta once on my disturbertor and also had the plugs that snaps onto the coil pack cause a lot of problemns because it wasn't snapped all the way don on the coil pack not the plug wires but the wiring harness plugs and it gave mne a lot of problems.may want to check yourself took it to a dealer ship 4 weeks in a row and every time they said it was fixed i drove it for a couple hours and it would quit and not start and that was all it was but it started with a tune up wires, cap ,rotor button.

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