Question about Chevrolet Corsica

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My 1994 Chevy Corsica idles fine in park but sputters in drive and once the transmission goes into overdrive at about 60 mph. Changed the MAP sensor and it seems a little better when in drive and stationary but still sputters in overdrive. Could this be the fuel pump going bad or possibly a timing problem?

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  • Chevrolet Master
  • 635 Answers

Possibly a vacuum leak or stuck egr valve.

Posted on Nov 03, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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fizzerdan
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SOURCE: 1994 s10 service engine soon light

Have you had the truck scanned for codes? If so, what was the code, codes? Why did you replaced those listed parts. Can you hear any hissing noise coming from the engine or engine compartment?

Posted on Sep 04, 2008

  • 1 Answer

SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

Posted on Oct 06, 2008

txkjun
  • 409 Answers

SOURCE: 2000 silverado 4.8 v8 runs bad when it is cold out side.

Try replacing the coolant temperature sensor for the injection system.

Posted on Jan 11, 2009

  • 1118 Answers

SOURCE: 1994 toyota paseo: overdrive problem

does it loose heat when you set still? is it full of coolent? whats the climent like were you at? is trans. low on fluid?when was the last time trans. was serviced? i know on most cars and trucks low fluid or old fluid can cause it to do what your saying, and also cold weather. some cars have a temp.sensor that won't let it shift into overdrive until car gets to a certain temp. with your temp. guage fluctuating the two could be related. has your service engine light ever come on and then went out, when it did this? if it ever has, have it scaned and see what codes show up. it might be that temp sensor i talked about. well thats the best i can do for you RON hope it helps or at least point you in the right direction to cure your problem. OLD SCHOOL.

Posted on Jan 23, 2009

pippall
  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

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So I have a 1990 Chevy Corsica 3.1L that will not run. Before any problems it just stuttered a little on the road but it was fine until one day I was trying to drive it and it wouldn't go above 20 mph....


If it runs on starting fluid, its not getting fuel pressure or the fuel is not reaching the injectors.
Has anybody checked the fuel pressure at the rail with a gauge ?

Oct 08, 2012 | Cars & Trucks

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I have a 1993 Chevy astro, 4.3L v6 (vin z). It starts right up., no problem, and idles good, but when I put it in gear and take off...its like the motor is stuggling ginger up to speed, spitting and...


A sensor probably , but with out looking at scan data i'd only be guessing . Your best bet , take it to a qualifed repair shop an have it checked . Unless you want to buy parts you don't need ! What is the coolant temp sensor data , mass air flow , fuel trims , is the engine computer adding fuel to compensate for a vacuum leak . Leaking EGR valve etc.... What is the TPS - throttle postion sensor data show, map sensor , coolant temp sensor etc....

Jun 07, 2017 | Cars & Trucks

1 Answer

My 05 chevy malibu is not excelerating or shifting properly...


I would test both the tps and map sensors.
map sensor is here:

0996b43f802030b8-etlvqcyxjdbbokifzikh1c5u-5-0.gif

Testing

Check the Manifold Absolute Pressure (MAP) sensor circuit as follows:
Ignition OFF, disconnect the MAP harness connector at the MAP sensor.Ignition OFF, test for less than 5 ohms of resistance between the low reference circuit terminal 2 and ground.If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.Verify the scan tool MAP Sensor parameter is less than 1 kPa.If greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the ECM.Install a 3A fused jumper wire between the signal circuit terminal 3 and the 5-volt reference circuit terminal 1. Verify the scan tool MAP Sensor parameter is greater than 126 kPa.If less than the specified range, test the signal circuit terminal 3 for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.If all circuits test normal, test or replace the MAP sensor.

0996b43f802030bb-etlvqcyxjdbbokifzikh1c5u-5-2.gif


Check the Throttle Position (TP) sensor circuits as follows:
Ignition OFF, disconnect the harness connector at the throttle body.Ignition OFF for 90 seconds, test for less than 5 ohms of resistance between the low reference circuit terminal C and ground.If greater than 5 ohms, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM. Ignition ON, test for 4.8-5.2 volts between 5-volt reference circuit terminal E and ground.If less than 4.8 volts, test 5-volt reference circuit for a short to ground or an open / high resistance. If the circuit tests normal, replace the ECM.If greater than 5.2 volts, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM. Verify the scan tool TP sensor 1 voltage is less than 0.1 volt.If greater than 0.1 volt, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the ECM. Verify the scan tool TP sensor 2 voltage is greater than 4.8 volts.If less than 4.8 volts, test the signal circuit for a short to ground. If the circuit tests normal, replace the ECM. Install a 3A fused jumper wire between the signal circuit terminal D and the 5-volt reference circuit terminal E of the TP sensor 1. Verify the TP sensor 1 voltage is greater than 4.8 volts.If less than 4.8 volts, test the TP sensor 1 signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. Install a 3A fused jumper wire between the signal circuit terminal F and the low reference circuit terminal C of the TP sensor 2. Verify that the TP sensor 2 voltage is less than 0.1 voltIf greater than 1.0 volt, test the TP sensor 2 signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM. Ignition OFF for 90 seconds, disconnect the harness connector at the ECM.Test for less than 5 ohms of resistance on all TP sensor circuits between the following terminals:ECM C2 signal circuit terminal 65 to TP terminal DECM C2 signal circuit terminal 63 to TP terminal FECM C2 5-volt reference circuit terminal 3 to terminal E If greater than 5 ohms, repair the affected circuit for open/high resistance.Test for infinite resistance between TP sensor 1 signal circuit terminal D and TP sensor signal circuit terminal F.If less than infinite resistance, repair the short between TP sensor 1 signal circuit and TP sensor 2 signal circuit. If all circuits test normal, replace the throttle body.

0996b43f802030be-etlvqcyxjdbbokifzikh1c5u-5-5.gif
Fig. Throttle Actuator Control electrical connector


Throttle Body Relearn Procedure
NOTE
Do NOT perform this procedure if DTCs are set.

Start and idle the engine in PARK for 3 minutes.With a scan tool, monitor desired and actual RPM.The ECM will start to learn the new idle cells and Desired RPM should start to decrease.Ignition OFF for 60 seconds.Start and idle the engine in PARK for 3 minutes.After the 3 minute run time the engine should be idling normal.
NOTE
During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.

If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
After the drive cycle, the engine should be idling normally.

If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step 6.Once the engine speed has returned to normal, clear DTCs.

Jul 29, 2017 | 2005 Chevrolet Malibu

1 Answer

1994 Buick Custom Regal 3.8L I changed ****** Filter and fresh fluid in it will go fine Thanks. But now at 60 mph rpm is 3,900.Maybe the overdrive is out? Any suggestion. Thanks.


Just having overdrive out would make it rev that high. It sounds like ur stuck in maybe 2nd gear. Did you add to much trans fluid possibly?

Jun 13, 2012 | Cars & Trucks

1 Answer

I have a 1994 Chevy Corsica with a 3.1 liter engine. The engine dies every so often when it hot and wont restart until 4-5 minutes later. Have checked vaccum lines, map sensor, and replaced temp sensor. I...


the idle flare up is when u start it the rpms go above normal idle speed for about 3-5 seconds then comes down to normal idle speed,if this car is stalling in park then all u need to do is remove the air cleaner from the throttle body and clean the the throttle blade and bore with a rag with some throttle plate cleaner on it that u can buy in a spray can at all auto parts stores and also take the idle control solenoid offhte side of the throttle body which is near the oil cap and has 2 t20torx head screws holding it on and clean the cone shaped plunger on the end of it with the same cleaner,after these two things are cleaned,reassemble the air cleaner and take it for a short ride so it can relearn idle,hope this helps

Sep 06, 2009 | 1994 Chevrolet Corsica

1 Answer

I was wondering if anyone could tell me where the cold start cyllenoid is on a 1994 ford probe gt. i was also wondering where a couple of the sensors were i.e. Heat sensor, Idle air control sensor, and the...


Your timing belt may have jumped time or maybe the catalytic converter is plugged up. I doubt you have a transmission problem. You could also have a plugged up fuel filter.

Jun 23, 2009 | 1994 Ford Probe

2 Answers

89 Corsica: no power, hesitates in drive, idles


What engine? Sounds like maybe timing chain jumped or it is very lean.

Apr 26, 2009 | 1989 Chevrolet Corsica

1 Answer

QDM B High


I do not believe you have a problem. That could be the driver for your torque convertor clutch. It is suppose to engage above 35 mph and disengage when touching the brake.

Mar 26, 2009 | 1994 Chevrolet Corsica

1 Answer

1994 s10 service engine soon light


Have you had the truck scanned for codes? If so, what was the code, codes? Why did you replaced those listed parts. Can you hear any hissing noise coming from the engine or engine compartment?

Sep 04, 2008 | 1994 Chevrolet S-10

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