SPONSORED LINKS

Engine stalls while driving?

Tiny
EWC177
  • MEMBER
  • 144 POSTS
Don't know if mine has long term trim readings. Wont be back home until after 5:00 had to work today.
Was this
answer
helpful?
Yes
No
Tuesday, May 26th, 2020 AT 7:14 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No problem. I will be here.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, May 26th, 2020 AT 7:20 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
My obd2 doesn't have fuel trim readings. Installed new pcv valve. Runs somewhat better. The rpms smooth out better than before, but doesn't stay constant. 1st video is after pcv valve was on for 5 minutes. 2and video after 10 minutes, stayed at the 1500's rpm till I shut it down, about 15 minutes later. At 1 time I actually got a code.
Was this
answer
helpful?
Yes
No
Wednesday, May 27th, 2020 AT 6:51 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I saw all kinds of responses but nothing came up.

Please resend.

Roy
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2020 AT 3:25 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Tried to upload videos, but wont let me. Put on new pcv valve. Runs some better. Starts idling real high. After a few minutes dropped down to 1300s and then went to 1500s after another 5 minutes and stayed there till I shut it down 20 minutes later. Has flashed me 1 code. The idle still doesn't sit at a smooth spot, moves up and down in various increments. Have hard would it be to hook up a dash tach?
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2020 AT 5:11 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Obd2 don't have trim readout. Installed new PCV valve, runs some better, idling in the 1,500's, but not stable. Have gotten 1 code.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2020 AT 5:23 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I posted on the other thread if it is still open.

Check your other post.

Roy
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2020 AT 5:43 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
5.1 at idle. Giving it quarter to half throttle 5.2-5.3.
Reference wire getting 00.1.
Ground wire getting 00.1.
Now getting 2 codes p1120 manufacturer control and p0122 throttle circuit low.
Was this
answer
helpful?
Yes
No
Thursday, May 28th, 2020 AT 5:25 PM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Roy.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 3:14 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Roy, any of these readings, useful?Rpm's drop to 900's after about 15 minutes and acted like it wanted to shut off.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 3:16 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The signal is the issue.

It should be.5 at idle. This is with the connector connected to the TPS and you back probing the connector.

As you accelerate, the voltage should rise to a max of 4.8 volts.

Roy
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 4:11 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Had it connected to the sensor and worked the probe into the wire casing, red wire. Black wire to battery ground. This is a new sensor.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:03 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The gray/white, which is the signal wire is the one that should have 5 volts disconnected and the key on.

At closed throttle, it should have.5 volts connected and the key on.

That is the wire that the voltage should rise to 4.8 at wide open throttle.

Roy
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:12 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
When I said red wire I meant I used red probe into gray/white wire that is plugged into the TPS.
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:23 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay,

What was the result with that wire for the testing I just suggested?

Roy
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:26 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
It's what I had posted earlier.
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:38 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
It doesn't drop to 4.8.
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:45 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What is closed throttle voltage and what is wide open throttle voltage?
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:48 AM
Tiny
EWC177
  • MEMBER
  • 144 POSTS
Idle was 5.1 and 1/2 throttle was 5.2.
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:49 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Are you sure you are on the right wire? It sounds like you are on the reference wire, not the signal wire.

Roy
Was this
answer
helpful?
Yes
No
Friday, May 29th, 2020 AT 5:51 AM

Please login or register to post a reply.

Related Engine Stall While Driving Content

How to Read Codes
VIDEO
How to Read Codes
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE

Sponsored links