help with 2001 s10 4.3 motor revs fine in park but bogs down under acceleration

Asked by Jan 31, 2016 at 12:35 AM about the 2001 Chevrolet S-10 2 Dr STD 4WD Extended Cab SB

Question type: Maintenance & Repair

Need some help with my s10. Ive tried everything replaced map sensor  fuel pump checked throttle sensor egr valve wires plugs rotor distrbutor cap  fuel filter .The truck idles an revs fine go to drive and accelerate and it bogs  if it was an old car  I would think it was thru vaccum advance. Any help would be a big help. Thanks RW

2 Answers

57,645

What you need to check is if there is a fuel leak. I would do a fuel pressure bleed down test by hooking up a fuel pressure gauge to the Schrader valve, cycle the key to build up pressure which should be 56 to 63 lbs. then turn the key off then watch the pressure gauge from its highest reading. The fuel pressure should not drop more that 5 lbs in 3 minutes. If it does the there is either leaky fuel injectors, leaky spider lines, or leaky fuel regulator. Unfortunately if any of these are leaking it is recommended to replace all as a unit as it has ben redesigned to be better, and spendy of course.

Best Answer

Thanks for the quick answer I did a fuel pressure test after installing the new fuel pump did great pressure was right on. But I didn't let it set just ran the engine and watched the gauge. Thanks for the help I'll try that. RW

Your Answer

Add photo

Related Questions

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,240
#2 Trebor66
Trebor66
Reputation 950
#3 John Saffrahn
John Saffrahn
Reputation 940
View All

Related Models For Sale

Used Ford Ranger
179 Great Deals out of 6,264 listings starting at $1,300
Used Chevrolet Silverado 1500
2,068 Great Deals out of 159,880 listings starting at $999
Used GMC Sonoma
5 Great Deals out of 471 listings starting at $2,700
Used Toyota Tacoma
544 Great Deals out of 38,017 listings starting at $2,900
Used Ford F-150
2,462 Great Deals out of 210,791 listings starting at $895
Used Dodge Dakota
110 Great Deals out of 3,954 listings starting at $1,500
Used Chevrolet Blazer
3 Great Deals out of 1,128 listings starting at $1,995
Used Nissan Frontier
396 Great Deals out of 26,170 listings starting at $890
Used GMC Sierra 1500
908 Great Deals out of 64,755 listings starting at $1,500
Used Dodge Ram 1500
441 Great Deals out of 11,517 listings starting at $700
Used Chevrolet Camaro
144 Great Deals out of 35,537 listings starting at $1,995
Used Ford Mustang
317 Great Deals out of 45,660 listings starting at $2,000

Used Cars For Sale

2004 Chevrolet S-10 For Sale
54 listings starting at $2,999
2003 Chevrolet S-10 For Sale
3 Great Deals out of 352 listings starting at $1,495
2002 Chevrolet S-10 For Sale
223 listings starting at $1,995