mickey_7106

Hello all.

Yesterday while driving on the freeway (65mph) it felt like the car was holding back. more like a pulse or if i were tapping on the brakes. it got worse as i decelerated. i thought it was going to stall on me cause the rev will drop to about 400 the jump to 700. i managed to find a safe place to pull over. checked all connections under the hood and everything checked out ok. i start the car, take off and everything is fine now! WTF? i didnt get any messages on the DIC but here are the codes i pulled up

28-TCS - Traction Control System
C1225 RF Excessive Wheel Speed Variation
C1232 LF Wheel Speed Circuit Open or Shorted
C1291 Open Brake Lamp Sw Contacts During Deccel
C1292 Set Curnt/Prev Ign Cylce

40-BCM -Body Control Module
B2578 RF Turn Signal Monitor Circuit (Short to Voltage)
B2583 LF Turn Signal Monitor Circuit (Short to Voltage)

B0-RFA - Remote Function Actuation
U1096 Loss of Communication with IPC
U1064 Loss of Communication with BCM
U1016 Loss of Communication with PCM
C2105 Right Front TPM Sensor Malfunction
C2110 Right Rear TPM Sensor Malfunction
C2115 Left Rear TPM Sensor Malfunction

what could have caused this? No spark? No fuel?
car has about 105K, any insight will be helpful.

TIA

memphis_vette

how is the battery on the car? when the batteries go bad on these cars they go crazy. also check all grounds and make sure they are all clear of corrosion and are not loose

lucky131969

Take a close look at the battery cables for corrosion/security. The C1291 code is somewhat telling, in that it's not seeing a brake pedal input on decel.....or like 12 volts was lost to the fuse. Minifuse 8 is hot at all times....straight from the battery.....so check those cables.

mickey_7106

battery connections are good. its sooooooo dirty under my hood i didnt even bother to check for anything else. she will get a very deep cleaning this weekend

dougbfresh

I'd look at chassis grounds 1st, read the electrical stick at the top of the section.

Also the wiring in the passenger door acordian is a KNOWN issue causing all kinds of issues like this. I think this is also covered in the electrical sticky.

Jewjenk

Looks like, USER ERROR, a car that is well kept, will keep well the driver.

mickey_7106

it happened again on the freeway for about 2 seconds. this time Check engine light came on.

P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency

time for a new MAF?

mickey_7106

well i think i know what was wrong with my car. at first i thought it was the wires from where it plugs in.. but then i found out it was worst. does any one have a PN for that?

mickey_7106

i think i found the AC delco P#. can someone confirm this is the right one before i buy? thanks




CONNECTOR-W/LEADS, 3-WAY F. *BLACK
Part Number: PT1604
Product Notes:
[Sensor-Mass Airflow Connector]; 3-Way female black
Per Vehicle: 1; Years: 1997-2000

dougbfresh

Why don't you just fix what you have?

mickey_7106

i could but im not sure how to go about fixing the wires by the plug. i want it too look as clean as possible

dougbfresh

Splice in some new wires, shrink wrap them, then put a new protective cover on (you can get it in rolls at the auto parts stor).

lucky131969

I'm sure you know you can purchase the chaffed wire loom at most auto parts stores. Why not by a new connector pigtail ?

http://www.lsxtune.com/shop/product_...oducts_id/1084

mickey_7106

i will. i just needed a temp fix since this is my DD

i made it very short to prevent this from happening again

lucky131969

I hope that is indeed a temp fix, as that length is unacceptable in my opinion....harnesses have slack for a reason.