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Mondeo 1.8 Hesitating on acceleration in 2nd Gear

Posted By auto_tech 11/7/2006 3:32:30 PM
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auto_tech
 Posted 11/7/2006 3:32:30 PM
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Hi guys, My 1997 Mark2 mondeo is hesitating at low speed in 2nd gear.

It idles & drives fine, but hesitates on acceleration in 2nd gear.

I've also noted a slight loss of Power, feels sluggish.

I've cleaned the MAP sensor (sprayed the wire sensor elements with Carb cleaner) but car still doing the same.

Could it be the EGR valve, if so how can I test/clean it.

There is no engine light to signal DTCs.

Any help appreciated.

kind regards

evo man
 Posted 11/7/2006 3:36:31 PM
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dose it misfire under load?

im just glad i saw the light and brought a jap carCool
auto_tech
 Posted 11/7/2006 3:58:00 PM
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Thank you Evoman, no, it does'nt misfire under load.

Its this irritating hesitation/jerking at low speed which happens for just a couples of seconds when putting the foot on the gas.

Thanks

K And R
 Posted 11/7/2006 5:13:19 PM
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Auto tech.

Welcome to the Forum BigGrin

I think you cleaned the MAF (mass air flow, Sensor) and not a MAP (manifold absolute pressure, Sensor). Try running with the MAF disconnected, this will log a fault code but  may point you to the MAF.

Kev.

"If you dont KNOW how it works, don,t try to test or fix it"

11/7/2006 5:14:29 PM by K And R
cartech
 Posted 11/7/2006 5:30:39 PM
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The most common fault associated with hesitation on Mondeos is arcing inside the plug boots. Remove the leads and look for tracking lines inside the boots, and down the sides of the spark plugs, especially on No. 4

If I understood women as well as I understand cars, I'd be the envy of every man.
auto_tech
 Posted 11/7/2006 5:32:57 PM
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Thanks Kev, I'LL try doing that & post the results later

chess.

K And R
 Posted 11/7/2006 6:39:26 PM
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Auto tech.

Well worth trying cartech point,s as well BigGrin

Kev.

"If you dont KNOW how it works, don,t try to test or fix it"

auto_tech
 Posted 11/13/2006 2:15:35 PM
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Hi guys,
I got to the bottom of it this weekend.

The problem was a sticking Exhaust Gas Recirculation Valve (EGR).

I removed it and gave it a good clean with carb cleaner, removing the carbon build up.

Fixed it back & its now running smooth, without any hesitation.

Smile


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