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Lack of power when accelerating

Why is there a lack of power when accelerating. I need a manual diagram for the vacuum and wiring.

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2 Answers

Lack of power when accelerating

Faulty EGR valve.EGR is exhaust gas recirulation and is typical to have a loss of power when it has gone bad.Replacement is easy,2 bolts hold it on and a vacuum line connection.Do this and get your power back so can climb hills again.

Apr 18, 2014 | 1997 Toyota Tercel

1 Answer


check for a bad vacuum line,, one thats either come off, or cracked allowing vacuum to escape,, start the motor, and spray short bursts of carb cleaner around the intake and vacuum hoses,, if the rpm's speed up,, thats where the vacuum leak is going to be,

Sep 09, 2011 | Volvo S40 Cars & Trucks

1 Answer

95 camaro 3.4 sucking air from a/c vents & loss of power cant find vacume leak

Not sure what you mean by loss of power. If you mean lack of acceleration or bogging down, than a bad cat convertor can cause this problem because you are lossing vacuum during acceleration causing the vents to switch from floor to defrost. Hope this helps leave comment.

Jan 05, 2011 | 1995 Chevrolet Camaro

1 Answer

Poor acceleration response and lack of power,

Replace the the spark plugs and wires. That sounds like a faulty plug wire(s). **Please rate me on this answer**

Jun 06, 2010 | 1983 Mazda RX-7

1 Answer

I have a 79 chevy malibu with the 200 V6. The the engine rattles when you accelerate and lacks power. It feels like a timing advance problem. Do you know where I can get a vacuum hose diagram? Also any...

take your vin # to the chevy dealer and they can print out a diagram of the hose routing for you for free, and they could tell you the timming for the engine.

Mar 13, 2010 | Chevrolet Malibu Cars & Trucks

2 Answers

Need vehicle emissions diagrams for 1984 Chevy S-10 w/2.8 V6, where do I find these? Vehicle runs fine but stumbles and hestitates slightly on taking off, also seems to miss on occasion(?) and fuel mpg is...

I take it that the distributor has a set of points and if so check the dwell angle to set the point gap
if it has electronic ignition check the rotor gap for the exciter and check the exciter operation
more costly parts will not solve the problem as car manufacturers use aftermarket parts in an OEM box just to inflate the price
stumbling on acceleration can be from incorrect ignition timing ( should be 12 degrees BTDC) or a problem accelerator pump/power valve in the carby
holley carbs came with different settings on the power valve and others have an adjustment on the pump linkage
hyt leads should be of high quality in the area of the insulation and plug gap should be correct
check that the coil is wired correctly and that the voltage is correct as it will be running a resistance wire from the ignition switch to the coil to reduce the 12 volts to 7.5 volts when running
low mpg is determined by driver habits but you can check the float level, cat converter for failure and blocking the exhaust and transmission changes are correct for rpms and road speed ( vacuum actuator on the transmission if auto)

Jun 04, 2017 | 1984 Chevrolet Chevy

1 Answer

On acceleration it it misses through 1st 2nd 3rd gear.......runs better when cold... might be egr... disconnected the hose to valve.. still lacks power... put new carb gaskets... thought there might be a...

Sound slike some of the things you mentioned, could likely be causeing the problem. A vaccum leak would steal from the acceleration. also the EGR. You may just need a tune up. New plug, wires, filters, the whole deal.

Nov 20, 2009 | 1983 Ford Ranger

1 Answer

Toyota Surf 1995 3ltre diesel Vacuum diagram

dont see what you mean --- vacuum line is nothing to do with the head .vacuum pump[ is on the back of your alternator the line runs to small vacuum tank and on to the brake booster .loss of power cant be related to vacuum,

Oct 16, 2009 | 1995 Toyota 4Runner

1 Answer

Wiring and vacuum diagrams

wiring diagrams for a lot of vehicles (but not all!)
go to autozone . com
repair info (on the left)
vehicle repair guides (center panel)
put in your vehicle info
select chassis electrical
then wiring diagrams (on the right, bottom of the list)

You might be able to find vacuum diagrams also, but I'm not sure.

Dec 16, 2008 | 1992 Dodge Ram 250

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