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98 silverado intake gasket swap...truck ran now wont start

After getting everything back 2gether the truck ran a few seconds even the 2nd & 3rd time now wont fire..checked electric connections, fuel, timing & spark all seem to be ok... im stumped

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  • 128 Answers

Check all connections where you did the work and make sure no wires are loose or were barely plugged in possibly.

Posted on Dec 27, 2013

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Posted on Jan 02, 2017

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SOURCE: 97 silverado won't start

replace the coil?

Posted on Jan 11, 2009

csmock132
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SOURCE: im getting spark from coil...but not from distributor??

Is the rotor burnt through to the distributor shaft, or a bad cap

Posted on Feb 28, 2009

  • 89 Answers

SOURCE: 1999 Toyota Camry V-6.

when starting push gas, if runs
idle valve (IAC) stuck,replace or disassemble and clean the burrs
has two time this promblem

Posted on Mar 01, 2009

frcs68
  • 1605 Answers

SOURCE: car runs rough when cold

did you check the timing?

Posted on Mar 25, 2009

  • 334 Answers

SOURCE: 98 mazda 2300 truck wont fire or start

check your coil and see if you have fire.if you have fire then you need to check your fuel pressure. i have a mazda 2600i that did the same thing and it was the coil .did your truck back fire when you shout it off?. if it did iam pretty sure its your coil.note there is a module in side the dis very few people know about this but they are not notted for going bad good luck

Posted on Apr 20, 2009

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My 1999 chevy silverado starts and dies within two seconds. has anyone had this experience before and how did you fix it?


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My GMC has 311632 miles on it. I just changed the 4L60E transmission a few months ago and now it wont shift out of first unless I manually put it in second gear. all the gears from park rev. nuetral works...


The transmission may be in Limp mode. The transmission is on the same fuse as the MAF, O2 sensors and at least one other sensor - if an O2 shorts out, it will blow the fuse and the trans will go into limp-home mode. Be sure the trans has power and the fuse is not blown before doing anything else.

What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

Trans does not upshift out of first, speedometer reads zero at all times: VSS failure. Easy fix on rear of transmission, but xmember must come out to access VSS.

Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Transmission does not shift automatically, only manually. Swap in a known-good PCM, check wiring, check other sensors such as VSS and TPS.

3rd gear starts, can manually shift through all gears. When car has been turned off for a bit, then back on it will run normally.: VSS dropoff w/ Hi-stall converter. The rpms are too high, but VSS is showing no movement. Happens after a tire burning take-off. Doesn't store a code, will not throw a CEL (I've heard that it will store a code if it happens 3 or more times). Cure: Reprogram PCM for VSS dropoff -- PCMforLess knows about it.

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1 Answer

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Honestly, I've never heard of such a thing. If the gaskets are replaced and the engine is cleaned out and the fluids are changed, there shouldnt be any long term problems. If theres no damage now, there wont be any after its fixed. I would highly recommend getting a second opinion before you commit to anything. A small piece of advise though, if you decide to replace the intake gaskets, you may want to go ahead and replace the head gaskets as well. It's not much extra work to do it once the intake is off, and you wont have to worry about a head gasket letting go after everything else is done.

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