1995 Chevrolet Blazer: misfire or rough idle

Filed Aug 24, 2006 · Fuel system · 00

Regarding cpi failure: check "o" ring behind fuel pressure regulator(rough idle,loss of power,reduced gas mileage; fuel in manifold; when testing fuel pressure it drops almost instantly when fuel pump shuts off) pretty easy to mistake for a cpi failure.

Filed Aug 29, 2003 · Brakes, Electrical · PA

Consumer stated that while driving and without warning, the egr valve failed, which caused the brakes to fail. Dealer notified. *ak the mixing with the fuel was the biggest problem. (when there was carbon build up in the egr valve, it would leave it open and caused no vacuum hard pedal and brake failure. When it rained or was cold the truck ran rough. The service light came on when the vehicle had run rough more than once, noise was present and there was a smell of burnt wires and the ignition switch was replaced, the brake pedal seemed soft on more than one occasion and the master cylinder and other brake components were replaced to try and solve the problem, the cd player had not worked since the ignition switch was changed, the rear windshield wipers had become inoperative, a noise would occur when turning but was not duplicated, and the muffler tail pipe had fallen off and rusted due to carbon build-up. The egr valve was cleaned but the problem persisted. The mechanic stated that in order to perform a proper job, the excessive carbon build up in the upper and lower intake manifold which effected the egr pendel, and the 02 sensor could cause a problem with the exhaust system, catalytic converter, fuel pump, the brakes, etc. The brakes squeaked, there were no dash lights, no air conditioning, and no 4-wheel drive. The fuel injections needed to be checked, and there were two recall stickers on the engine. *scc the rear wiper motor, fuel injectors and brakes were replaced.

Filed Mar 31, 2003 · Engine · VA

Egr has been replaced twice since 1999 when I bought the vehicle. I just had the egr valve replaced yesterday and today the check engine light is back on and the nasty smell of exhaust/fuel is back in my vehicle. I also had the catalytic converter. Replaced two weeks ago. Vehicle runs rough and stalls without notice. Safety hazard! I have two small baby's and fear for their safety because of breathing in exhaust/fuel and vehicle stalling whenever. Mdh in virginia.

Filed Dec 1, 2002 · Fuel system · NC

Cp injector said to be leaking internally causing engine to run rich. Experiencing very rough idle, poor gas mileage, foul smell and hard start. Egr valve needs replacing again (2nd time in less than 2 years). Dt

Filed Oct 23, 2002 · Engine · MN

Consumer states engine light is coming on. Vehicle runs rough. Consumer states vehicle has had 5 fuel injectors installed. Mr

Filed Apr 2, 2002 · Engine · IL

Egr valve is failing ,and causing vehicle to run rough. They have cleaned it, but problem is still there.

Filed Jun 11, 2001 · Engine · IA

We've gone through 4 egr valves now. Every time we drive for extended highway miles, the valve sticks open causing the vehicle to run rough at low speeds. The vehicle, in a nearly stalled state, hesitates when I accelerate - making a merge into oncoming traffic very dangerous. Our vehicle hasn't stalled yet but that's because we avoid driving the vehicle whenever this happens. Tapping on the egr valve with a wrench unclogs the valve but it only sticks again the next time we go on the highway. We're afraid that vehicle may stall during an emergency breaking situation.

Filed Nov 27, 2000 · Fuel system · FL

The central port injection system failed and was replaced, the dealer stated that this failure could have started a fire, the vehicle experienced a hard start, rough idle, and appeared not to be feeding gas properly.

Filed Jul 25, 2000 · Fuel system · KY

Vehicle is very difficult to start and runs rough on idle. This is due to a bad diaphragm in the fuel injector. Dealer has not fixed vehicle.

Filed Jul 11, 2000 · Engine · WA

When the egr valve sticks it results in poor drivability, engine surge/knock, rough idle and/or hard start. Gm provided special warranty but consumer believes gm failed to mention the when the valve sticks open it creates a vacuum leak which has an impact on the power brakes. Nlm

Filed Apr 26, 1999 · Engine · TX

Vehicle experienced failure of the egr valve which stuck causing rough idle, replacement stuck also, manufacturer has a special warranty for component failure. Mjs

Filed Apr 16, 1999 · Engine, Fuel system · KY

This is a followup to a previously reported problem. The service lite has intermittently come on onthis vehicle since the 40k range . The egr valve,an injector and various incidental parts were replaced in november,1998 at 78000 miles during two separate service visits . The vehicle again experience identical problems in april 1999 at 84000 miles which include rough running and stalling at slow speeds and the service engine light again coming during the rough running periods. The veihcle was returned to the dealer who first replaced the sensor-ox(part #102) this did not correct the problem and 3 days latter a new egr valve had to be instaled on 4/16/99. Due to these repeated problems I feel it is dangerous to drive this vehicle since you never know when the problem will reoccur and the vecle will again stall and run rough, making it an adventure when you are slowing or attempting to merge in traffic.