1990 c1500 starting to be a money pit

Asked by Mar 04, 2014 at 05:59 PM about the Chevrolet C/K 1500

Question type: Maintenance & Repair

I have a 1990 c1500 w/ 5.7l tbi. It started running very rough a few weeks ago until
finally leaving me stranded on the side of the road. I brought it home on a trailer and it
would run fine just setting in the driveway. After warming it up and driving for 10 or 15
mins. it started  surging and popping and cracking, until finally dying.  After letting it set
for 30 mins. it fired right back up. I thought ignition module and coil, so I went all out
coil module cap rotor wires and plugs. Now it wont start at all. I've checked the timing
at tdc and its very close without hearing the motor run. Fuel pressure is at about 12 psi
when cranking on the engine. Ive replaced the coolant temp sensor and fuel filter to no
avail. I'm now at a complete loss. Any one with similar problems and solutions would be
greatly appreciated

3 Answers

10,695

How did the pick-up coil look in the dist. If it's the original or older it may be the issue. Do the injectors spray fuel while you turn it over? If the ECM doesn't see ~400RPM or more from the pick-up via the ICM it won't fire the injectors. If your spraying I would re-check the timing. Your TDC compression or Exhaust/Intake. I usually pull the valve cover and watch the intake valve close then bring it up to TDC

With this experience I will say it will be the pick up coil . Make sure to mark the position of the rotor and mark the position of the dist I would just buy the complete assembly. Place motor at tdc and adjust dist . Make sure to unplug the retard wire before adjusting timing. This will allow for you to adjust to 0 and will adjust self after wire is plugged giving a perfect sound and excel.

19,235

make sure the injectors are spraying and spraying in a good cone spray while turning over the engine with the starter. Also make sure your wires are in the correct order. Have a parts store or someone test the ign module, parts stores get bad ones from time to time. I know my autozone can test them

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 863 nationwide C/K 1500 listings starting at $2,000.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,590
  • #2
    John Saffrahn
    Reputation
    2,570
  • #3
    Rowefast
    Reputation
    2,160
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,102 Great Deals out of 166,922 listings starting at $1,498
Used GMC Sierra 1500
879 Great Deals out of 65,374 listings starting at $1,995
Used Ford F-150
2,270 Great Deals out of 181,500 listings starting at $1,000
Used Chevrolet C/K 2500
195 listings starting at $6,495
Used Dodge Ram 1500
380 Great Deals out of 10,865 listings starting at $1,500
Used Chevrolet Silverado 1500HD
13 Great Deals out of 268 listings starting at $3,495
Used Chevrolet Silverado 2500HD
320 Great Deals out of 29,064 listings starting at $2,995
Used Chevrolet C/K 3500
230 listings starting at $4,999
Used Chevrolet Tahoe
660 Great Deals out of 39,340 listings starting at $1,000
Used Toyota Tacoma
589 Great Deals out of 42,309 listings starting at $1,995
Used Chevrolet Colorado
269 Great Deals out of 31,181 listings starting at $2,495
Used Chevrolet Camaro
400 Great Deals out of 30,567 listings starting at $3,550
Used Chevrolet S-10
8 Great Deals out of 1,217 listings starting at $2,500
Used Chevrolet Silverado Classic 1500
65 Great Deals out of 919 listings starting at $3,350

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.