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Old 12-26-2015, 02:42 PM
dmc1953 dmc1953 is offline
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Re: 94 Suburban problems

Just finished the fuel pressure test and the fuel pump is fine. Tested it cold and hot. I let it run for about 20 minutes to reach and run at operating temperature and then let it sit for about 30 minutes. When I tried to crank it the fuel pump responded with the proper psi and the engine caught and died for several tries. Usually when this happens I can give it the gas and pump the accelerator and keep it running to a point that it will smooth out. Then if I hold it at about 1500 rpms for 15 or 20 seconds I can drive it with little or no problem. This starting when it is warm and has been sitting for awhile is the major problem I've been experiencing. Since the distributor shows no sign of wobble or wear I'm thinking that the module in the distributor must be breaking down due to heat soak in the engine compartment. I'm thinking a dying module could also be the reason it takes a little longer to start than it used to. Does it sound like I'm on the right track?
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