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Hesitation/stumble on acceleration 19881999 Chevrolet ...

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Dec 13, 2018· Yes it''s a 93 suburban 1500 with a 350 tbi and a 4l60e. I will check the egr for the n. Should my truck have a positive or negative pressure egr? There are no markings on it or on the box to indicate if it''s positive or neagtive pressure. If it helps, when you apply vacuum to the egr it opens and let''s air through.

Manifold Absolute Pressure (MAP) Sensor | O''Reilly Auto Parts

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Last. Your manifold absolute pressure, or MAP sensor, measures the pressure in the intake manifold for the engine control unit to adjust fuel flow and engine timing. This constant adjustment helps to keep your engine running smoothly. A failing MAP sensor can cause engine hesitation, rough idle, or black smoke from the tail pipe.

20 Most Recent 1991 Chevrolet Suburban Questions Answers ...

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Read full answer. 1/13/2019 3:02:09 PM • 1991 Chevrolet... • Answered on Jan 13, 2019. 0 helpful. 1 answer. 1991 Chev Suburban 4x4 Injectors aren''t firing. Fuel pump runs, gas line clear filter clear. When it died on street acted like out of gas. was able to feather the foot feed to get home, but n.

Troubleshooting your TBI Fuel Injection System

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If you have access to a scan tool use a hook up for a 1990 350 cu. in. Chevrolet truck. ... Fuel pressure on a TBI unit should stay constant under all throttle conditions. There should be ... the fuel tank has fuel in it and that all sensors are correctly connected and there are no trouble codes in the ECM.

1991 Chevy suburban. Code 43 esc module or sensor circuit ...

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Sep 29, 2014· 1988 chevrolet: 350 engine..a knock sensor code, but i..voltage i have a 1988 chevrolet 1500 truck with a 350 engine. when i drive it for a while i get t/c i know this is a knock sensor code, but i put a new knock sensor in a while back. what voltage does t …

chevy suburban 4x4 silverado 1991,question i have ...

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chevy suburban 4x4 silverado 1991,question i have fuel pressure the jets work i have power to the coil but no spark to the also have power to the black box on pass. side top of engine i think controls when the spark happens i also replaced the module on backside of distributer, the distributer, the coil,the wires the plugs, bht havent done the cap and that …

No start low oil pressure | GM Truck Club Forum

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Apr 19, 2012· 1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 3503/4 ton ... What happens is the fuel pump relay goes bad so you don''t have any fuel pressure, but as you crank the motor the oil pressure rises up and once it gets past 40psi(I think), it bypasses the relay and turns on the fuel pump which starts the motor. ... but after all that still won''t pick ...

SOLVED: I have a 1991 chevy truck, I am getting no spark ...

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Jun 29, 2009· I have a 1991 chevy truck, I am getting no spark. I have changed the ECM, distributor and coil. still no results. I Chevrolet 1991 Silverado 2500 question

1991 Suburban Stalls Under Load: 1991 3/4 Ton 350, 134k ...

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Like your MAP. You''ll probably stall less at sealevel but overall performance will suffer as barometric pressure changes. Have a 1990 2500 4x4. It seems to stall the most on hot days or at high altitude. My bet is on the fuel pressure, most likely the fuel pump loosing its power. Havnt hooked up a fuel pressure meter yet.

CHEVROLET /350 Computer Chips and Modules V8 Engine ...

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Find CHEVROLET /350 Computer Chips and Modules V8 Engine Type and get Free Shipping on Orders Over 99 at Summit Racing!

1991 Chevrolet Silverado K1500 Idle/fuel Issue: Ok Here Is ...

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1991 CHEVROLET SILVERADO. 168,000 MILES. Ok here is the problum I have a 1991 Chevy k1500 350 that is having idle issues and seems to be loading up. It has problums starting and when it does start it is either starved of fule or loads up. When I bought the truck the return fuel line was crimped off so I replaced the fuel lines.

1991 Chevy Suburban Gauges Dashboards | Pressure, Boost ...

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Chevy Suburban 1991, Dash Gauge Panels by Classic Dash®. Molded UV Resistant ABS Instrument Panel will replace the stock gauge panel. This panel comes complete with your choice of Gauges. 1, AEM® XSeries 21/16" AFR Controller Gauges, Black.

Recommended 350 TBI modifications Harris custom fuel ...

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Well here is a basic guideline. Stock 210hp 350 V8 up to 250hp the stock 55lb 350 truck injectors at the factory 1112psi is fine. from 250hp to 260hp the fuel pressure should be bumped up to 1314psi on stock 350 truck injectors which will change their flow rating to 60lb/hr.

Chevy Suburban Replacement Fuel Sensors, Relays ...

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Fuel Sender Connector by Dorman®. Dorman offers a comprehensive line of Fuel Sender Connectors for a wide range of applications. All the connectors are constructed of highquality materials for longlasting durability. Reduce repair cost replace the part, not the assembly Direct replacement for a proper fit every time.

Chevrolet Suburban | Auto Parts | NAPA Auto Parts

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Diagnosing: Anti Lock Brake System (ABS) Sensor; Diagnosing: Manifold Absolute Pressure (MAP) Sensor; Diagnosing: Variable Valve Timing (VVT) Maintaining Tires; Replacing a Belt; ... Year Range for Chevrolet Suburban 2022 Chevrolet Suburban. 2021 Chevrolet Suburban. 2020 Chevrolet Suburban. 2019 Chevrolet Suburban ...

1991 chevy suburban V8 won’t start (Chevrolet Suburban ...

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Jun 26, 2017· 1991 chevy suburban V8 won’t start. Report. Follow. Asked by Vex Jun 26, 2017 at 11:42 PM about the 1991 Chevrolet Suburban V2500 4WD. Question type: Maintenance Repair. The truck cranks but will not start. I. replaced the fuel pump has the right. pressure and hasn’t solid ground.

ACDelco GM Original Equipment 19244500 Engine Oil Pressure ...

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in Automotive Replacement Transmission Oil Pressure Sensors. 24 offers from 19244500 Engine Oil Pressure Switch Sender Unit Compatible with GMC Chevy Buick Cadillac Isuzu Oldsmobile Pontiac 1S6635 PS262 PS220. out of 5 stars.

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