Help, Max wont go over 2K RPM's
12-28-2003, 06:55 AM
#1
Senior Member
Thread Starter
Join Date: Feb 2003
Posts: 432
Help, Max wont go over 2K RPM's
Hi i don't know what happened to my max, but yesterday for some odd reason it overheated, so I drove it home and parked it, and came back when it cooled down and poored some coolant/water in it. I then finished some other suspension work on it.
I then started up my car, backed it outta my driveway and went to drive down the street, when i noticed i couldn't give it any gas(car wont go over 2,000 rpms) The tachometer just go's up there gets limited(bob's back down), then goes back up to 2,000 again. I checked all my vacuum hoses and I cant imagine the problem? All the fuses are good. When I pulled the fuse on the fuel pump the engine almost stalled, so the fuel pump is pumping fuel(im not sure if its working at the correct psi, that might be a problem).
Anyone ever had this problem, I was trying to go out last nite, but never made it around the block
. Any assistance would be great!
I then started up my car, backed it outta my driveway and went to drive down the street, when i noticed i couldn't give it any gas(car wont go over 2,000 rpms) The tachometer just go's up there gets limited(bob's back down), then goes back up to 2,000 again. I checked all my vacuum hoses and I cant imagine the problem? All the fuses are good. When I pulled the fuse on the fuel pump the engine almost stalled, so the fuel pump is pumping fuel(im not sure if its working at the correct psi, that might be a problem).
Anyone ever had this problem, I was trying to go out last nite, but never made it around the block
. Any assistance would be great!
12-28-2003, 08:02 AM
#5
Originally Posted by kevlo911
check the maf sensor, cheack the harness wireing and make sure it is good
This is exactly what I'm thinking. Sounds like the MAF sensor is out on your ride. Might want to check it out.
David
12-29-2003, 05:58 AM
#9
did you have this code ?
0102
Diagnostic Trouble Code 0102 points to a problem with the Mass Air Flow Sensor. The MAFS is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a thin film that is supplied with electric current from the Engine Control Module. The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to the hot film as air flow increases. This maintains the temperature of the hot film. The ECM detects the air flow by means of this current change.
This malfunction is detected when an out-of-range voltage is sent to the ECM. That voltage might be too high or too low.
a) An excessively high voltage from the MAFS is sent when the engine is not running.
b) An excessively high voltage from the MAFS is sent under light load driving conditions.
Possible causes include...
- Harness or connectors (the sensor circuit is open or shorted.)
- Faulty MAFS
c) An excessively low voltage from the MAFS is sent when the engine is not running.
d) An excessively low voltage from the MAFS is sent under heavy load driving conditions.
Possible causes include...
- Harness or connectors (the sensor circuit is open or shorted.)
- Intake air leaks
- Faulty MAFS
With DTC 0102 the ECM is supposed to switch into Fail Safe mode and limit engine speed to 2400 rpm.
0102
Diagnostic Trouble Code 0102 points to a problem with the Mass Air Flow Sensor. The MAFS is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a thin film that is supplied with electric current from the Engine Control Module. The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to the hot film as air flow increases. This maintains the temperature of the hot film. The ECM detects the air flow by means of this current change.
This malfunction is detected when an out-of-range voltage is sent to the ECM. That voltage might be too high or too low.
a) An excessively high voltage from the MAFS is sent when the engine is not running.
b) An excessively high voltage from the MAFS is sent under light load driving conditions.
Possible causes include...
- Harness or connectors (the sensor circuit is open or shorted.)
- Faulty MAFS
c) An excessively low voltage from the MAFS is sent when the engine is not running.
d) An excessively low voltage from the MAFS is sent under heavy load driving conditions.
Possible causes include...
- Harness or connectors (the sensor circuit is open or shorted.)
- Intake air leaks
- Faulty MAFS
With DTC 0102 the ECM is supposed to switch into Fail Safe mode and limit engine speed to 2400 rpm.
12-29-2003, 06:51 AM
#10
Senior Member
Thread Starter
Join Date: Feb 2003
Posts: 432
No I didnt have any codes, what happened was my car overheated, and I guess it stayed in the failsafe mode, and I reset it and I was good to go, hell I'm here at work today! lol. Thats my story and Im sticking to it. :-)
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