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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...   1999 Grand Caravan Sport not starting. Hi. I'm new here. I hope someone can hel... Brake Seals Bulging 2021 Toyota Corolla LE 1.8l 65,000 mile...   Engine blew up after oil change, is mechanic responsible? Hello, I have a 2007 Hyundai Elantra wit...   Changed pads and now brake pedel goes to the floor I am not much of a mechanic, and needed ...   Equinox air conditioning issue, help please! I have a 2020 Chevrolet Equinox that has...   2005 Maxima overheats only when idling but engine temp comes down immediately if I rev up the engine (even though car is stationary) hello everyone, I own a 2005 Nissan M...   Brake & Turn Signal Out - One side only 2002 Ford Ranger 3.0 V6, 5-speed manual ...

Jolting understrain or heavy acceleration Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting benallen90 New User Oct 28, 2015, 8:56 AM Post #1 of 3 (1287 views) Jolting understrain or heavy acceleration Sign In Year of vehicle: 2010 Make of vehicle: Vauxhall Model of vehicle: Astra J Shape Engine size: 1.4 Mileage/Kilometers: 78,000 Hey All, My car begins to jolt as if its miss firing when the engine is under strain such as going uphill or when heavy accelerating. It also seems to only happen once the car has been running for a while and warmed up? I had this problem at the start of the year however it happened more often and actually stopped the car at one point giving an engine error showing a miss fire. I the car the garage and had it fully serviced and since then it had been fine. However it recently started to happen again. When it went to the garage they highlighted that the Coil Pack connector to the engine was broken, it still connected but the cover around it snapped meaning the connection could loosen. I have checked the connection it still seems to be connected not loose. The car drives fine until I push on the acceleration beyond 3250rpm. Also if the car is still and engine is just ticking over I can feel the engine jolt a couple of times in a row every few minutes. Can anyone point me in the right direction or suggest any tests I can perform to narrow down the problem? I appreciate any input anyone can provide. Kindest Regards Ben Tom Greenleaf Ultimate Carjunky / Moderator Oct 28, 2015, 9:21 AM Post #2 of 3 (1283 views) Re: Jolting understrain or heavy acceleration Sign In Ben - Welcome. Know that we don't have this car in the US so limited for specifics. Real basic on this. You took it to a garage (shop) for this and they found something. You may have only seen a cover to it not the whole show. I sure can't compete with a technician who pointed something out that sure could cause this. Maybe it does feel plugged in OK and can't be removed again now if ever needed so I'd heed their suggestion that, that part is broken and should be fixed. If that doesn't solve it then go for the hunt on what is, T kev2 Veteran Oct 28, 2015, 10:21 AM Post #3 of 3 (1275 views) Re: Jolting understrain or heavy acceleration Sign In as my colleague pointed out - not sold here. BUT it is a GM product so we can give some basic direction. holding back @ 3250rpm... might want to look at fuel pressure.... I do not rev (Rpm) that high VERY often. slow DOWN :) scan for codes - yes even if the engine management light is off. AKA ck eng light. Did you modify or use any parts components that were not GM (vauxhall) ? The connector if bad are often available separate as replacements see dealer.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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