1998 GMC Jimmy hesitates on wide turns, left or right on initial acceleration.

Tiny
ROYCAR71
  • MEMBER
  • 1998 GMC JIMMY
  • 2.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 148,000 MILES
Hello, my car drives good after initial take off. I noticed on initial accelerations turns going right or left there is a slight hesitation when turn wheel back straight than a fast take off. I Have did oil change and tuneup 2 months ago. Which before then, I had a PO171 and po174. After new spark plugs, wires, distributor and distributor cap car runs much better without codes just with this hesitation on turns problem.
Saturday, June 28th, 2014 AT 9:23 PM

11 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try cleaning the throttle plate on both sides with choke cleaner and iac hole then get fuel pressure checked with a gauge
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Sunday, June 29th, 2014 AT 8:08 AM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
I cleaned throttle plate and replaced iac. Afterwhile, things ran ok, but now I get same symtoms. My fuel pressure can to 51 psi and then falls steady after about 2 min to 35 psi where is holds for about 15 min.
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Wednesday, September 10th, 2014 AT 2:41 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If ita 4.3 which I think it is it should be 60-66 psi sounds like time for a fuel pump.
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Wednesday, September 10th, 2014 AT 6:19 AM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
Thanks.
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Wednesday, September 10th, 2014 AT 12:38 PM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
I have changed fuel pump and pressure is at 60-66psi. I drove for a week without any noticeable hestitations, but now since changed pump I get "low fuel" indicator and gauge does not move at all. What be the first thing I should do before dropping tank again. Thanks.
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Thursday, September 18th, 2014 AT 10:07 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check to see if connector is in all theway and any pinched wires around tank. Otherwise it may be the fuel sender. Could be a bad ground as well so make sure that wire is clean by the tank.
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Thursday, September 18th, 2014 AT 10:09 AM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
I have connector out and tank half way down. Connector seems good is there a way I can test connector for voltage for sending unit?
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Thursday, September 18th, 2014 AT 1:19 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If you know the wire is for sender ground it out and see if gauge goes to full if it does then it's the sender or something jamming it it's the purple wire also get it scanned because it may be a module problem as well.
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Thursday, September 18th, 2014 AT 1:28 PM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
I would put a resistor from sender hole and ground in connector than hook battery. Turn on engine to on position. That watch gauge. Is this correct?
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Thursday, September 18th, 2014 AT 1:47 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check to see if yo have power there it will be low voltage if you do then have it scanned. It may be a module problem. Or try it the way you want. I don't know what size resistor to use on this. As they are all different and on a fuel sender the resistance changes as fuel goes down.
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Thursday, September 18th, 2014 AT 3:33 PM
Tiny
ROYCAR71
  • MEMBER
  • 363 POSTS
I figure I out. It turned out the black and white cord got lose from sliced connector. I went on redid all the wiring to fuel pump with sliced connectors than heat shrink them all. Gauge works and pressure is at 60 to 66 psi. Thanks.
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Thursday, September 18th, 2014 AT 6:43 PM

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